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Bilge

The bilge is the lowest internal compartment of a ship's hull, located between the outer hull plating and the inner bottom, where water, oil residues, and other liquids accumulate from sources including structural leaks, equipment drainage, and atmospheric condensation.^[1]^[2] This accumulation, known as bilge water, must be managed to maintain vessel stability and prevent flooding, typically through dedicated bilge systems comprising pumps, piping, and alarms that detect and remove fluids while separating oily mixtures to comply with environmental regulations.^[3]^[4] Bilge keels, hydrodynamic protrusions along the hull's turn of the bilge, further enhance stability by reducing rolling motions at sea.^[5] Effective bilge maintenance is critical in maritime engineering, as unchecked water ingress can compromise buoyancy and lead to structural corrosion over time.^[6]

Definition and Fundamentals

Physical Structure and Location

The bilge refers to the lowest interior compartment of a ship's or boat's hull, specifically the curved region at the junction between the flat or nearly flat bottom plating and the rising side shell plating, termed the turn of the bilge.^[7]^[8] This structural feature creates recesses where water accumulates due to gravity, typically located beneath the cabin floor, engine room, or main deck level.^[9]^[4] In vessel design, the bilge's physical structure includes reinforced plating and framing to withstand hydrodynamic pressures and stresses concentrated at the hull's curvature.^[7] Bilge compartments are often subdivided by bulkheads and girders, forming discrete sections along the hull's length to manage water collection and minimize sloshing.^[4] Sumps or bilge wells, intentional low points within these compartments, concentrate drainage for efficient pumping, commonly positioned amidships or in engine spaces.^[3] For double-bottomed hulls common in merchant and naval vessels, the bilge extends to spaces outside the inner bottom, such as margin compartments or wing areas adjacent to the sides, ensuring comprehensive coverage of potential leakage paths.^[10] The exact configuration varies by vessel type, with smaller boats featuring a single continuous bilge space and larger ships employing compartmentalized designs for stability and damage control.^[11]

Etymology and Terminology

The term bilge emerged in nautical English as a variant of bulge, denoting the rounded, protuberant section of a vessel's hull at its lowest interior point.^[12] This usage derives from Old French boulge (or bouge), which traces to Late Latin bulga meaning "leather bag" or "bellows," metaphorically capturing the swollen, bag-like curvature of the ship's bottom planks or frames.^[13] The word's earliest documented appearance in English occurs in the early 16th century, specifically before 1522 in Gavin Douglas's translation of Virgil's Aeneid, where it describes the swollen sides of a ship. In maritime terminology, bilge precisely refers to the compartment or region at the base of a ship's or boat's hull where the vertical sides transition via a curve to the flat or nearly flat bottom, forming the point of lowest elevation if the vessel were keeled over on dry land.^[14] This area, known as the turn of the bilge, naturally accumulates drainage due to the vessel's design and motion. Bilge water designates the stagnant fluid mixture—typically comprising seepage from the hull, condensation, rainwater, oil residues, and particulates—that gathers there, requiring periodic removal to maintain stability and prevent corrosion or contamination.^[15] Related terms include bilge strake, the hull plating or planking immediately above the bilge turn, and bilge keel, a longitudinal fin fitted externally along the bilge to reduce rolling.^[16] These designations standardize communication in ship design, maintenance, and regulatory contexts, such as those governed by the International Maritime Organization's conventions on oily water discharge since 1973.^[17]

Historical Context

Origins in Early Maritime Design

The bilge originated as an inherent feature of early ship hull designs, resulting from the curved transition between the keel and hull sides, which created low-lying interior spaces prone to water accumulation from hull seepage, rain, and spray. Ancient vessels, including Bronze Age sewn-plank ships from the Mediterranean dating to circa 1300 BC, exhibited flat or gently rounded bottoms that pooled water along edges or central troughs, managed primarily through manual bailing with buckets or sponges rather than structured compartments. This design stemmed from shell-first construction techniques prioritizing seaworthiness over watertightness, as wooden planks inevitably worked loose under stress, rendering the bilge a practical necessity for maintaining freeboard and cargo integrity.^[18]^[19] By the classical period, Greek and Roman shipbuilders recognized the bilge's functional role, integrating early force pumps to extract water from these areas, as evidenced by descriptions in technical treatises. Vitruvius, in De Architectura (circa 15 BC), detailed suction and chain pumps adapted for maritime use, which drew bilge water through valves and discharged it overboard, indicating hull designs with designated low points or sumps for efficient drainage. These systems, often powered by oarsmen or screws, addressed increased ingress in larger warships and merchantmen, where hull volume amplified accumulation risks. Archaeological finds, such as pump components from Hellenistic wrecks, confirm that bilge management influenced framing, with limber passages carved in floor timbers to direct water to pump locations.^[19] Hellenistic innovations further refined bilge integration; the Syracusia (launched circa 240 BC), a massive Syracusan transport, featured multiple screw pumps designed by Archimedes to handle bilge and ballast water, showcasing proactive hull engineering for sustained voyages. This vessel's compartmentalized hold and pump wells represented an evolution from ad hoc bailing, prioritizing causal factors like vessel scale and material limitations in design. Such advancements persisted into medieval clinker-built Scandinavian longships (circa 800-1100 AD), where overlapping planks and internal ribs defined bilge keels, channeling water amidships for communal pumping, thus embedding the bilge as a core element of structural realism in early maritime engineering.^[19]^[20]

Development of Bilge Pumping Systems

The development of bilge pumping systems originated in antiquity with rudimentary force pumps employed on ancient vessels to expel seepage and accumulated water from hull bottoms, improving upon labor-intensive manual bailing. These early devices, traceable to the early 3rd century BCE, functioned by creating pressure to draw and discharge water, though they were limited in capacity and required constant manual operation.^[21] By the late medieval period, European shipbuilders introduced more reliable mechanical designs, such as piston-based pumps, which enhanced efficiency for larger wooden hulls prone to leaks from plank seams and caulking failures.^[21]^[20] From the early 16th century onward, documented innovations focused on three primary types: chain pumps, suction pumps, and burr pumps, as detailed in contemporary shipyard records and archaeological evidence. Chain pumps, the most widespread until the mid-19th century, consisted of an endless chain fitted with leather discs or valves, powered by hand levers, capstans, or windlass mechanisms to lift bilge water vertically through dedicated wells.^[22]^[23] The integration of metal components, first recorded in 1526, reduced wear on wooden elements and allowed for deeper suction capabilities, critical for multi-deck vessels where bilge depths exceeded 10-15 feet.^[24] Suction and burr variants, employing pistons or rotating burrs to create vacuum, emerged as alternatives for targeted dewatering, particularly in forward and aft bilge compartments, though chain systems dominated due to their simplicity and adaptability to crew labor.^[25]^[23] The 19th century marked a shift to powered systems with the introduction of steam-driven bilge pumps around 1840, coinciding with the mass production of reliable steam engines for maritime use. These pumps achieved flow rates of up to 1,000 gallons per minute—far surpassing manual capacities of 20-50 gallons per stroke—enabling sustained operation during storms or combat damage without exhausting crews.^[22]^[26] The direct-acting steam pump, patented in 1849, exemplified this advance by directly coupling engine pistons to pump rods, minimizing mechanical losses and enhancing reliability on iron-hulled steamships.^[26] In the 20th century, electrification transformed bilge systems into automated, centrifugal-impeller designs standard on most vessels by the mid-century, powered by shipboard generators and often equipped with mercury or float switches for intermittent activation. These developments prioritized redundancy, with multiple pumps per compartment to handle failure rates observed in manual eras, where clogs from debris reduced efficiency by up to 50%.^[21] Modern iterations incorporate submersible motors and non-sparking construction to mitigate explosion risks from fuel-contaminated bilge water, reflecting iterative refinements driven by naval architecture standards post-World War II.^[21]

Bilge Water Characteristics

Composition and Sources

Bilge water, accumulating in a vessel's lowest compartments, comprises ingress water from sources such as hull leaks, rainfall, seawater infiltration during rough seas, and internal condensation, which mixes with contaminants from onboard operations.^[27] ^[28] Primary contamination arises from machinery spaces including main engine rooms, auxiliary systems, shaft alleys, and pump rooms, where leaks or spills introduce fluids; additional inputs stem from cleaning and maintenance activities, drains in air conditioning or refrigeration areas, boiler blowdown, and overflows from sludge or waste oil tanks.^[27] ^[29] The composition includes water emulsified or suspended with oils such as heavy fuel oil, lubricating oil, hydraulic oil, diesel, and compressor oil, alongside greases, detergents, solvents, and surfactants like sodium dodecylbenzene sulfonic acid that promote emulsification.^[29] ^[28] Other pollutants encompass organic hydrocarbons, volatile organic compounds (e.g., benzene, toluene, phenols), heavy metals (e.g., copper at up to 341 µg/L, zinc at 878 µg/L, mercury at 51.8 ng/L in sampled effluents), rust (iron oxide), soot, and biological matter from microbial decomposition or sewage.^[30] ^[27] Oil and grease levels in untreated bilge water can exceed regulatory limits significantly, with variability depending on vessel type, operational history, and maintenance practices, often rendering it a complex, recalcitrant mixture.^[27] ^[30]

Hazards and Risks

Bilge water's contamination with oils, fuels, lubricants, detergents, and heavy metals renders it highly toxic, posing acute environmental risks upon discharge into marine environments. These pollutants can bioaccumulate in aquatic organisms, disrupting food chains and causing sublethal effects such as reduced reproduction and growth in fish and invertebrates, while acute exposure leads to mortality in sensitive species like plankton and shellfish.^[31] Discharges exceeding permissible oil content thresholds—typically limited to 15 parts per million under international standards—result in surface sheens that smother habitats, inhibit photosynthesis in algae, and deplete dissolved oxygen levels, exacerbating hypoxic zones.^[32] Studies indicate that untreated bilge water contains carcinogenic compounds like polycyclic aromatic hydrocarbons (PAHs), linking chronic exposure to developmental disorders and elevated cancer risks in marine mammals and potentially human consumers of contaminated seafood.^[33] ^[34] Onboard accumulation of bilge water presents operational safety hazards, including corrosion of hull plating, piping, and electrical systems due to prolonged exposure to acidic or saline mixtures, which can precipitate structural failures during voyages.^[35] Excess volumes impair vessel stability by raising the center of gravity, increasing susceptibility to listing or capsizing in adverse weather, particularly in smaller craft where free surface effects amplify rolling motions.^[35] Flammable residues, such as volatile hydrocarbons, heighten fire and explosion risks in engine rooms, where ignition sources like hot exhausts or sparks can vaporize oils, as evidenced by incidents involving overlooked bilge levels leading to rapid conflagration.^[36] ^[37] Crew safety is further compromised by slippery surfaces from oily bilge, contributing to slips, trips, and falls, while stagnant water fosters bacterial proliferation, generating hazardous gases like hydrogen sulfide and unpleasant odors that degrade air quality in confined spaces.^[37] Electrical hazards arise from water ingress into wiring, causing shorts that may spark fires or electrocute personnel during maintenance.^[38] Even post-treatment, bilge effluents retain sufficient toxicity to warrant caution, as laboratory assays reveal persistent lethality to marine biota beyond regulatory compliance levels.^[39] Non-compliance with discharge protocols incurs regulatory penalties, but empirical data from port state controls highlight persistent illegal dumping, amplifying cumulative ecological damage.^[40]

Technical Systems and Operations

Pumping and Removal Mechanisms

Bilge pumping systems on ships primarily utilize centrifugal pumps for main operations, as these roto-dynamic pumps efficiently handle large volumes of water by imparting kinetic energy through an impeller, converting it to pressure for discharge.^[41] In vessels with engines exceeding 220 kW, regulations mandate at least two power-driven bilge pumps in the machinery space, one operable from the main engine, to ensure redundancy and capacity for emergency dewatering.^[42] These systems draw water from bilge wells via suction lines equipped with strainers to prevent debris ingress, with check valves installed on discharge lines to inhibit backflow and maintain prime.^[43] For lower water levels or tighter spaces, reciprocating or positive displacement pumps, such as piston or diaphragm types, provide higher suction lift and self-priming capabilities, operating by mechanically displacing fluid through cyclic motion rather than continuous flow.^[44] Diaphragm pumps, including single- and double-diaphragm variants, excel in handling viscous or debris-laden bilge water by flexing a flexible membrane to create suction and pressure, minimizing clogging risks.^[41] Rotary lobe pumps offer maintenance-free operation in confined areas, using intermeshing lobes to convey fluids without internal contact.^[45] Submersible electric pumps serve as emergency backups, positioned above the bulkhead deck for reliability during flooding.^[46] Water removal typically involves routing bilge effluent through dedicated piping to collection points, where clean water may discharge directly overboard via high-capacity main pumps, while potentially oily mixtures are directed to oily water separators (OWS) for treatment.^[3] OWS systems employ coalescing plates to aggregate oil droplets, achieving separation down to 15 parts per million (ppm) oil content before monitored discharge, with alarms halting outflow if limits exceed thresholds.^[47] Excess contaminants collect in sludge tanks for port-side disposal or incineration, preventing environmental release; in some configurations, heated holding tanks facilitate evaporation to isolate residues.^[17] Stripping pumps, often reciprocating, target residual water in compartments, enabling near-dry conditions post-main pumping.^[3]

Alarms and Monitoring Technologies

High water level alarms in bilge compartments detect accumulation that could lead to flooding, typically activating pumps or crew alerts via sensors such as float switches, which rise with water levels to close electrical circuits, or ultrasonic sensors that measure distance to the water surface using sound wave reflections.^[48]^[49] These systems, often integrated with programmable logic controllers (PLCs), monitor multiple voids and tanks, triggering audible sirens, visual indicators, and remote notifications when levels exceed thresholds like a 200 mm rise.^[50] U.S. Coast Guard regulations mandate such alarms on recreational vessels over 26 feet to enhance safety, with non-compliance risking structural integrity during voyages.^[51] Oily bilge water monitoring focuses on discharge compliance, employing 15 parts per million (ppm) alarms required by the International Maritime Organization (IMO) under Resolution MEPC.107(49), adopted December 15, 2004, for ships' machinery space bilges.^[52] These devices, such as fluorescence-based monitors like the Brannstrom BilgMon 488, continuously sample effluent from oily water separators, halting overboard discharge if oil content surpasses 15 ppm and logging events for verification.^[53] Amendments in IMO Resolution MEPC.285(70), adopted October 28, 2016, specify calibration accuracy checks by manufacturers and mandate 18-month data retention to deter tampering, with non-compliant systems facing port state control detentions.^[54]^[55] Integrated monitoring technologies, including NMEA 2000 networked sensors, provide real-time data on water levels, temperature, and pump runtime, enabling predictive maintenance and geofenced alerts via satellite or cellular links for unmanned vessels.^[56] Paperless data recorders further support regulatory audits by timestamping alarms and discharges, reducing manual errors in MARPOL Annex I compliance.^[57]

Maintenance and Practical Management

Routine Procedures

Routine procedures for bilge management on vessels include systematic inspections to detect water accumulation, debris, or contaminants in the lowest compartments of the hull. Crew members typically conduct visual checks of bilge wells and sumps during daily rounds, using sounding tapes or gauges to measure water levels and identify any unusual odors or residues indicative of leaks or spills.^[36] These inspections help ensure that bilge systems remain operational and prevent progressive flooding or equipment failure.^[41] Bilge pumping routines involve activating pumps manually or automatically to remove collected water, with operators verifying flow rates and discharge locations to comply with environmental standards. On commercial ships, main and auxiliary bilge pumps are tested weekly, including emergency suctions from the engine room, as part of scheduled drills to confirm capacity and prevent backflooding through non-return valves.^[58] Piping systems, including hoses and check valves, are examined for cracks, clogs, or corrosion, with cleaning performed using fresh water rinses or approved solvents to maintain unobstructed drainage paths.^[59] Cleaning protocols emphasize removing debris such as rags, plastic, or sediment that could impair pump strainers or float switches, often using absorbent materials for oil residues to minimize pollution risks. Electrical components, including wiring, fuses, and sensors, receive quarterly scrutiny for damage or corrosion, with full disassembly and lubrication of pumps conducted annually or after heavy use.^[60] ^[61] These steps, integrated into vessel maintenance logs, support overall seaworthiness by mitigating hazards like electrical shorts or hydraulic failures in the bilge area.^[62]

Common Challenges and Solutions

One prevalent challenge in bilge maintenance is clogging and blockages in pumps, pipes, and strainers caused by accumulated debris, sludge, sediments, and oily residues, which can reduce pumping efficiency or cause complete failure, potentially leading to water ingress and stability issues on vessels. ^[63] ^[17] Electrical malfunctions, including faulty float switches, corroded wiring, or insufficient battery power, often prevent automatic pump activation, resulting in undetected bilge accumulation during unmanned engine room periods. ^[64] ^[65] Worn impellers or mechanical wear from dry running exacerbate these issues, as centrifugal pumps can overheat and seize without liquid lubrication. ^[66] Contamination of bilge water with hydrocarbons from machinery leaks poses regulatory compliance hurdles, as untreated discharge exceeds MARPOL Annex I limits of 15 ppm oil content, risking fines or detentions; gravity-based separators, common on older ships, often prove inadequate for variable bilge compositions including detergents and soot. ^[29] ^[37] Dirty bilges also heighten fire and pollution risks in engine rooms, with unmonitored accumulations contributing to incidents reported in maritime safety analyses. ^[37] Solutions emphasize preventive measures such as weekly visual inspections and manual testing of pumps, alarms, and high-level sensors to detect blockages early, coupled with disassembly and cleaning of strainers using brushes and freshwater rinses to remove residues without damaging components. ^[67] ^[68] For electrical faults, verifying connections, replacing corroded terminals, and installing backup power sources or manual overrides ensure reliability, while impeller inspections and lubrication checks mitigate mechanical wear. ^[64] ^[69] Advanced remediation includes deploying centrifugal separators or integrated bilge treatment systems capable of handling emulsions and achieving below-5 ppm discharge, verified through oil content meters and logging in the Oil Record Book. ^[29] Crew training on sludge minimization—via prompt leak repairs and segregated collection—and adherence to classification society guidelines, such as those from DNV or ABS, reduce recurrence; for instance, routine sounding of bilge wells prevents overflows noted in port state control detentions. ^[17] ^[70]

Regulations and Environmental Aspects

Governing Standards and Compliance

The International Maritime Organization's (IMO) MARPOL Annex I establishes the primary global framework for preventing oil pollution from ships, including regulations on oily bilge water discharges. Under Regulation 14, ships of 10,000 gross tonnage and above, or those carrying 400 cubic meters or more of oil in bulk, must be fitted with approved oil filtering equipment capable of limiting oil content in processed bilge water to no more than 15 parts per million (ppm).^[71] Discharges are permitted only when the ship is en route, outside a special area, beyond 12 nautical miles from the nearest land, and without visible traces of oil on the water; otherwise, oily mixtures must be retained onboard for discharge to reception facilities.^[72] Compliance requires continuous monitoring via approved oil content meters and automatic stopping devices that halt discharge if limits are exceeded, as outlined in IMO Resolution MEPC.107(49).^[73] Vessels must maintain an Oil Record Book to log all bilge water operations, including processing, transfers, and discharges, with entries verified during port state control inspections.^[74] Non-compliance, such as bypassing separators or falsifying records, can result in fines, vessel detention, or criminal penalties under flag state laws enforcing MARPOL. Integrated bilge water management systems, recommended by IMO Resolution MEPC.205(62), further enhance compliance by automating separation and monitoring to minimize operational discharges.^[75] In the United States, the Environmental Protection Agency (EPA) enforces bilge water standards through the Vessel Incidental Discharge National Standards of Performance, finalized on October 9, 2024, which replace the prior Vessel General Permit for commercial vessels. These standards prohibit untreated bilgewater discharge containing oil and mandate management practices like using oil-water separators for any allowable effluent, with no free-floating oil sheen permitted.^[76] ^[77] For surface vessels, 40 CFR § 1700.36 requires that bilgewater not be discharged unless processed through approved equipment, aligning with MARPOL's 15 ppm limit.^[78] Violations incur civil penalties up to $66,712 per day per violation, enforced via Coast Guard inspections.^[79] European Union directives supplement MARPOL through Directive 2005/35/EC, as amended in 2024, which criminalizes intentional ship-source pollution including illegal bilge discharges, with penalties including imprisonment for ship masters and operators.^[80] Directive (EU) 2019/883 mandates adequate port reception facilities for oily wastes, requiring member states to ensure no undue delays or costs deter compliance.^[81] Despite these measures, enforcement challenges persist, with reports indicating ongoing illegal dumping in European waters due to inadequate monitoring and incentives for evasion.^[82] Flag states and classification societies verify compliance via surveys, issuing certificates like the International Oil Pollution Prevention Certificate (IOPP) valid for five years.^[83]

Pollution Effects and Debates

Bilge water discharge contributes to marine pollution primarily through the release of hydrocarbons, heavy metals, surfactants, and other contaminants that persist in aquatic environments. Even small volumes, such as one pint of oil, can cover large surface areas and form persistent slicks that smother plankton, fish eggs, and benthic organisms, disrupting food chains and leading to widespread ecological damage.^[84] Studies have demonstrated that bilge water exhibits acute toxicity to marine species, with significant mortality observed in crustaceans and fish at dilutions as low as 5-10% for untreated or inadequately treated samples.^[85] Long-term exposure alters the physiology of marine populations, including endocrine disruption and bioaccumulation of toxins in higher trophic levels, exacerbating risks to fisheries and coastal ecosystems.^[86]^[34] Toxic components like surfactants, often overlooked in oil-focused assessments, contribute disproportionately to sublethal effects such as impaired reproduction and developmental abnormalities in aquatic life, persisting even after passage through oil-water separators (OWS).^[85] In sensitive habitats, chronic inputs from vessel operations elevate baseline hydrocarbon levels, correlating with reduced biodiversity and oxygen depletion in affected waters.^[87] Peer-reviewed analyses confirm that bilge-derived pollutants pose carcinogenic risks to marine organisms and indirect threats to human health via contaminated seafood.^[34]^[88] Debates surrounding bilge pollution center on the adequacy of international standards under the International Convention for the Prevention of Pollution from Ships (MARPOL) Annex I, which permits discharge if oil content is below 15 parts per million (ppm), despite evidence that treated bilge water remains toxic to marine life due to non-oil contaminants.^[85]^[89] Critics argue for revised thresholds or zero-discharge policies, citing frequent illegal bypassing of OWS systems—estimated to occur thousands of times annually in regions like European waters—and the limitations of current monitoring technologies in detecting surfactants or dispersed hydrocarbons.^[40]^[90] Proponents of existing regulations highlight compliance costs for advanced treatment, which can strain smaller operators, versus the environmental benefits, though enforcement gaps persist due to inconsistent port-state controls and satellite detection challenges.^[91]^[92] Recent U.S. EPA rules under the Vessel Incidental Discharge Act aim to standardize management, but debates continue over whether they sufficiently address cumulative impacts from global shipping fleets.^[93]

Recent Advancements and Enforcement

In response to ongoing environmental concerns over oily bilge water discharges, advancements in treatment technologies have emphasized efficiency and reduced operational costs. A 2023 hydrodynamic supercavitation method has been proposed for separating bilge and oily water, leveraging cavitation bubbles to enhance oil coalescence and removal without chemical additives, achieving higher throughput than traditional gravitational separators.^[94] Biodegradation techniques, such as sequencing batch reactors optimized via response surface methodology, have demonstrated up to 90% chemical oxygen demand reduction in bilge water under controlled aerobic conditions, offering a biological alternative to mechanical systems.^[95] Market analyses project the oily bilgewater separators sector to grow from USD 1.235 billion in 2025 to USD 1.548 billion by 2031, driven by innovations in membrane filtration and centrifugation that comply with stricter effluent limits below 15 ppm oil content.^[96] Regulatory updates under MARPOL Annex I have intensified restrictions on bilge discharges. Effective January 1, 2025, the Red Sea and Gulf of Aden were designated as special areas, prohibiting any discharge of oil or oily mixtures from ships, including processed bilge water, unless discharged to reception facilities ashore; this applies to all vessels, with oil tankers facing additional cargo area bans.^[97] The International Maritime Organization's Pollution Prevention and Response Subcommittee in February 2025 considered amendments to recognize forced evaporation as a permissible bilge treatment method, potentially allowing vapor discharge if residue meets oil content standards.^[98] In the United States, the Environmental Protection Agency finalized vessel incidental discharge standards in October 2024, mandating management practices for bilge water to minimize aquatic impacts, with compliance required by 2027 for existing vessels.^[76] Enforcement has seen heightened scrutiny amid implementation gaps. A March 2025 European Court of Auditors report highlighted EU improvements in ship-source pollution rules but criticized insufficient data and inconsistent port state controls for bilge violations, recommending enhanced monitoring technologies like satellite tracking.^[99] In Turkish waters, authorities enforce MARPOL standards more stringently than international norms, with routine inspections and fines exceeding USD 100,000 for undocumented bilge discharges, contributing to lower reported incidents in the region.^[100] The IMO issued clarifications in October 2023 on oily water separator sampling points to prevent bypassing, aiding flag states in verifying compliance during detentions.^[83] These measures reflect a shift toward proactive verification, though a 2024 review underscores the need for cost-effective innovations to address persistent challenges in real-time detection and treatment aboard vessels.^[30]

Cultural References

Nautical Slang Including "Bilge Rat"

"Bilge rat" is a nautical insult originating from the rats that infest the bilge, the lowest compartment of a ship where stagnant water and debris collect, rendering it a foul and undesirable habitat.^[101] This term denotes the lowliest creature aboard, often applied derogatorily to junior or despised crew members perceived as scurrying vermin in the ship's underbelly.^[102] In pirate lore, such rats were sometimes consumed for survival during voyages, underscoring their association with desperation and filth.^[103] Within modern naval slang, particularly in the U.S. Navy, "bilge rat" describes engineers or technicians laboring in the engineering spaces near the bilge, evoking the messy, waterlogged conditions of their work environment.^[104] The phrase extends beyond literal rodents to insult anyone exhibiting cowardice, incompetence, or卑 low status, as in pirate narratives where it targets "bottom-dwelling" adversaries.^[105] Related slang includes "bilge water," which denotes the dirty seepage in the bilge and, by extension, entered common parlance around 1825–1835 as a term for foolish, worthless talk or nonsense, due to its repulsive, stagnant quality.^[106] Similarly, "bilge" alone functions as slang for rubbish or drivel, mirroring the unpalatable residue of shipboard waste.^[107] "Drain the bilge" serves as idiomatic expression for vomiting, alluding to expelling foul bilge contents.^[108] These terms highlight how the bilge's practical role in maritime operations—collecting seepage that requires constant pumping—fostered vivid, derogatory imagery in sailor vernacular, emphasizing hierarchy, hardship, and revulsion.^[109] While pirate glossaries popularized "bilge rat" in cultural depictions, its roots trace to authentic seafaring disdain for the bilge's vermin and mire, with no evidence of fabrication despite romanticized portrayals in media.^[110]

Representations in Media and Literature

In nautical literature of the 19th century, bilge water is portrayed as a persistent hazard of sea life, symbolizing the grimy underbelly of maritime operations. Herman Melville's Moby-Dick (1851) references the bilge pump in scenes of routine ship maintenance, such as sailors laboring to expel foul accumulations during whaling voyages, underscoring the physical toil required to keep vessels afloat.^[111] Similarly, Robert Louis Stevenson's Treasure Island (1883) employs "bilge" in pirate dialogue to denote contaminated hold liquids—"Don't you get sucking of that bilge, John"—and extends it idiomatically as "dead as bilge" to convey utter finality, reflecting the term's derogatory connotations tied to decay and worthlessness.^[112]^[113] The metaphorical use of "bilge" for nonsense or rubbish, arising from the stench and impurity of actual bilge water, emerged in naval slang by the early 20th century and permeated literary prose. Ernest Hemingway's The Sun Also Rises (1926) glosses it as "worthless or silly talk or writing," capturing its dismissal of vapid discourse in expatriate circles.^[114] This extension, documented in period glossaries, highlights how sensory revulsion from bilge informed broader cultural disdain for the trivial or false.^[13] In cinema, bilge evokes sailor archetypes through character nomenclature. The 1936 film Follow the Fleet, a musical comedy directed by Mark Sandrich, casts Randolph Scott as Chief Petty Officer "Bilge" Smith, a wisecracking naval figure whose moniker draws on slang for a base or unclean ship rat, blending humor with authentic seafaring grit amid dance sequences aboard mock vessels.^[115] Such portrayals reinforce bilge's association with the lowly, unromanticized labor of the lower decks in popular depictions of naval life.

References

[1]
Nautical Term Glossary : Boater Info - Oregon.gov
BILGE - Lower internal part of a boat's hull. BOAT - All watercraft, including a seaplane on the water but not in flight, used or capable of being used as a ...
[2]
GLOSSARY AND CONVERSIONS - The National Academies Press
Bilge. Intersection of the bottom and the side; may be rounded or angular as in ... A legal term implying that a vessel is capable of safe passage at sea.
[3]
What Is The Bilge System In A Ship? - Maritime Page
Oct 25, 2024 · The bilge system is provided in the ship to remove bilge water from the ship's dry compartments in emergencies.
[4]
Introduction To Bilge System - Merchant Navy Decoded
Nov 25, 2023 · In this blog it is discussed about the bilge system on the ship, were it is located and its functions.Bilge removal is also explained here.
[5]
[PDF] ILLUSTRAIED GLOSSARY OF SHIP AND BOAT TERMS
turn of the bilge; thick ceiling opposite a bilge wale. See also Ceiling. Bilge keel (Fig. 3-7). A secondary keel placed beneath.
[6]
Bilge system on vessels explained - Chief Engineer's Log
Apr 19, 2022 · A bilge system is a piping system installed onboard a vessel for the purpose of removing water that accumulates in enclosed spaces.
[7]
Different Parts Of A Ship's Hull - Marine Insight
Apr 11, 2023 · For many ships, the upper side of the bottom shell structure has a curvature, and this curved plate is also known as the bilge plate or turn of ...
[8]
SHIPYARD OUTSIDE MACHINIST - Part 4 - Appendix - Index
Bilge--The curved section between the bottom and the side of a ship; the recess into which all water drains. Bilge Blocks--Supporting blocks used under the ...
[9]
Bilge - UK Sailmakers
The bilge refers to the lowest inner part of a boat's hull, where water and other liquids naturally collect. This area, located beneath the cabin floor or deck ...
[10]
Bilge keels, Double bottom Tanks, Peak tanks, Wing Tanks and Bilges
On commercial ships the bilge keel is the form of a strake, running along much of the length of the hull. They are typically fitted one on each side, low down ...
[11]
https://www.maritimepage.com/bilge-on-a-boat/
[12]
Bilge - Etymology, Origin & Meaning
Originating from Old North French boulge and Late Latin bulga meaning "leather sack," the word refers to a ship's lowest part and the foulness gathered ...
[13]
A.Word.A.Day --bilge - Wordsmith
Mar 4, 2025 · PRONUNCIATION: (bilj) · MEANING: noun: · ETYMOLOGY: Probably a variant of bulge, from Old French boulge, from Latin bulga (bag). · NOTES: A ship's ...
[14]
Parts of a Boat: Boating Terminology | BOATERexam.com®
Bilge: A compartment at the lowest point of a boat's hull . Draft:The distance between the waterline and the keel of a boat; the minimum depth of water in ...
[15]
Bilge: Definition, Meaning, and Examples - PredictWind
Jan 16, 2025 · The term "bilge" refers to the lowest compartment on a ship or boat, where the two sides meet at the bottom.
[16]
Marine Term Glossary
The breadth of a vessel. Bilge The lower inner space of a vessel's hull. Bitt (Bollard or Timberhead) A single or double post on a vessel or wharf ...
[17]
An Overview Of Sludge And Bilge Management Onboard Ships
Sep 20, 2021 · In this article, we will see from where sludge and bilge are generated, how they are stored in engine room tanks, what record keeping is done, and how sludge ...
[18]
[PDF] Ancient Mediterranean Sewn-Boat Traditions - HAL-SHS
Dec 30, 2019 · This sewn tradition concerns mainly flat-bottom boats, some with a plank-keel or others without keel and without carved bilge strakes.<|control11|><|separator|>
[19]
Ships' Pumps: From Antiquity to the Early Modern Era - jstor
Feb 27, 2020 · This article addresses earlier analyses on ships' pumps and expands upon the topic with new archaeological findings. It also discusses the ...
[20]
Deck Pumps and Bilge Waters - Te Ūaka The Lyttelton Museum
There were three basic types of bilge pump, the origins of which are ancient and were used in European sailing ships from the 1400s on.
[21]
A Journey Through the History of Marine Pumps
Apr 3, 2024 · Marine pumps evolved from ancient devices to medieval piston pumps, then steam-powered and centrifugal pumps, and finally to modern electric ...<|separator|>
[22]
Ships' Bilge Pumps: A History of Their Development, 1500-1900
... history of the ship bilge pump. Beginning with early sixteenth-century documents that recorded bilge pump design and installation and ending at about 1840, when ...
[23]
Ships' Bilge Pumps - Texas A&M University Press
In stockBeginning with early sixteenth-century documents that recorded bilge pump design and installation and ending at about 1840, when bilge pumps were being mass- ...
[24]
Historic Manual Bilge Pump on Balclutha Returned to Working ...
Oct 25, 2024 · Use on ships was probably from sometime in late 1400s to early 1500s. The first recorded use of metal parts in ship pumps was 1526. Usually ...
[25]
Ships' Bilge Pumps: A History of Their Development, 1500-1900 ...
Thomas J. Oertling traces the five-hundred-year evolution of a seemingly mundane but obviously important piece of seafaring equipment.
[26]
Timeline of mechanical engineering innovation
Nov 18, 2024 · 1849: Steam direct-acting steam pump invented; for Simplex pumps. ... ↑ Ships' Bilge Pumps: A History of Their Development, 1500–1900. By ...<|control11|><|separator|>
[27]
[PDF] Surface Vessel Bilgewater/Oil Water Separator (OWS) Discharge ...
The liquid collected in the bilge is known as “bilgewater” or “oily wastewater”. 2.1.2 Composition of Bilgewater. The composition of bilgewater varies from ...
[28]
Bilge water - Wärtsilä
Bilge water also contains fluids from machinery spaces, internal drainage systems, sludge tanks and various other sources.
[29]
[PDF] Bilge water compliance issues - Alfa Laval
Bilge water contains a mixture of water and fluids from various sources on board. It is treated to reduce oil-in-water content to at least. 15 ppm. Clean water.
[30]
Advancements in bilge wastewater treatment: A review for current ...
Nov 15, 2024 · BW is mainly composed of organic hydrocarbons and oils together with surfactants, heavy metals, and other organic compounds but oil is the sole ...
[31]
Risk assessment of bilge water discharges in two Baltic shipping lanes
Bilge water is formed on board all ships and contains a mixture of potentially harmful components such as residuals from lubricants, fuel oil and cleaning ...
[32]
Pro Tips for Preventing Discharge of Oily Bilge Water - HalenHardy
Jun 26, 2023 · ... bilge discharges from small fishing and recreational boats are major sources of water pollution. minimize bilge water pollution. Potential ...
[33]
Determining the bilge water waste risk and management in the Gulf ...
Bilge water waste poses an environmental risk for humans and marine creatures by causing cancer and developmental disorders due to the toxic substances.
[34]
Determining the bilge water waste risk and management in the Gulf ...
Bilge water waste poses an environmental risk for humans and marine creatures by causing cancer and developmental disorders due to the toxic substances.
[35]
Bilge Water Explained: What You Need to Know - Seaharbor Group
Problems That Can Be Caused by Bilge Water · Corrosion Woes · Machinery Mishaps · Environmental Upset · Weighty Matters · Regulatory Headaches · Safety Hazards.
[36]
Introduction to Bilge Management - Rivertrace
Jun 6, 2024 · Learn about bilge water and its management in ships. Explore the causes, composition, and solutions for bilge water accumulation.
[37]
Risks associated with dirty engine room bilges - The Shipowners' Club
Mar 15, 2023 · Pollution – Bilge water can be contaminated from various sources, such as oil leakage from machinery, sediments or cleaning agents used for ...
[38]
https://vanemar.com/blogs/vanemar-boaters-blog/what-is-a-bilge-and-why-monitoring-bilge-matters-for-boat-safety
[39]
Toxicity of treated bilge water: The need for revised regulatory control
Jan 30, 2017 · Water accumulating in the bottom of ships (bilge water), contains a mixture of oil, detergents and other compounds from on board activities.
[40]
Revealed: ships may dump oil up to 3,000 times a year in Europe's ...
Mar 22, 2022 · Collaborative investigation shows ships regularly discharge 'bilge' water illegally instead of treating it, with toxic effect on marine life.<|separator|>
[41]
Marine Bilge Pumps: The Ultimate Guide for Ships - Carver Pump
Oct 31, 2020 · Bilge pumps are a type of marine water pump found on both large and small ships. They are responsible for removing water accumulating bilge wells and throwing ...
[42]
Section 6 Pumps on bilge service and their connections
In ships with engines exceeding 220 kW, at least two power bilge pumps are to be provided in the machinery space, one of which may be worked from the main ...<|separator|>
[43]
The Critical Role of Check Valves in Vessel Bilge Pumps
In a typical bilge pump system, the check valve acts as a gatekeeper, opening to allow water to exit the bilge and closing to block any potential backflow. ...Missing: ships | Show results with:ships
[44]
Marine Pumping System: Types, Cavitation, Priming, Protocols
The bilge system plays a crucial role in removing small amounts of fluid that accumulate in otherwise dry spaces due to leakage or condensation.The Bilge System · Pumps On Ships · Reciprocating Pumps
[45]
Bilge Pumping and Conveying Tasks in Shipbuilding Industry
TORNADO® rotary lobe pumps perform bilge pumping and pumping tasks in the shipping industry maintenance-free, reliably and in the tightest of spaces.
[46]
[PDF] Bilge and Ballast Systems - Elegant Manual - Coast Guard
Jul 10, 2020 · Bilge Pumps a. The number and capacity of bilge pumps is dependent on vessel length and number of allowable passengers (46 CFR 182.520 (a)):.
[47]
Oily Water Separators: How Do Bilge Water Treatment Systems Work?
Mar 6, 2025 · The system uses coalescing to collect oil, then removes finer impurities. It monitors oil content, recycling water if it exceeds 15 ppm.
[48]
Bilge Monitoring - Basic System - Maretron
This basic bilge monitoring system, costing less than $1,500 will monitor the voltages at all points, displaying their status on a small sunlight viewable ...
[49]
Marine & Shipping Process Control Applications - Clipper Controls
Ultrasonic level sensors in wastewater treatment systems regulate discharge processes, maintaining compliance with IMO and MARPOL effluent treatment guidelines.
[50]
Bilge Alarm System - SELMA – Ship Electric Marine Control
The bilge alarm system uses PLC and marine sensors to detect liquid, with audible/visual alarms, and has a 200mm opening on rising level.
[51]
Buyers Guide to Bilge Alarms - BoatTEST
Jan 4, 2023 · Bilge alarms or “high water” alarms are required by the US Coast Guard on boats over 26' long, but are rarely seen on smaller boats.
[52]
[PDF] IMO Resolution MEPC. 107(49)"Revised ... - Technical Information
Dec 15, 2004 · This technical information provides the outline of Resolution MEPC. 107(49) on the pollution prevention equipment for machinery space bilges ( ...
[53]
Brannstrom BilgMon 488 15 ppm Bilge Alarm - Insatech Marine
It is used to ensure compliance with IMO MEPC. 107(49) regulations by continuously measuring the oil content in bilge water before discharge overboard.
[54]
[PDF] RESOLUTION MEPC.285(70) (Adopted on 28 October 2016 ...
Oct 28, 2016 · The accuracy of 15 ppm bilge alarms is to be checked by calibration and testing of the equipment conducted by a manufacturer or persons ...
[55]
Bilge Water monitoring legislation compliance – are you confident ...
Sep 1, 2025 · The IMO Resolution MEPC.107(49) requires the 15ppm bilge monitors (oil content meters) to store data for a minimum of 18 months. Furthermore ...
[56]
Next-Level Boat Monitoring: Sensar Marine and the Power of NMEA ...
May 8, 2025 · Water Level Detection: The Bilge Sentry includes a high-precision water level sensor that warns you if the bilge starts filling with water, long ...<|separator|>
[57]
Monitoring and controlling bilge water discharge - ABB
Using paperless data recorders for monitoring and controlling bilge water discharge help keep vessels compliant with MARPOL regulations.
[58]
Section 2.3 Bilge Systems and Pumping Arrangements - BulkersGuide
Regular Testing and Drills: Include bilge pumping (especially emergency bilge suction from the engine room) in routine emergency drills. Cargo Hold Bilges: For ...
[59]
A Step-by-Step Guide to Maintaining Your Bilge Pump Check Valves
To clean bilge pump check valves, disassemble them carefully and rinse each component with fresh water. This simple action can keep your valves running ...
[60]
Bilge Pump Basics - Vessel Vanguard
A diaphragm pump acts like a little wet-vac to suck out bilge water. Water is pulled in through an intake valve, then pushed out through an output valve.They're Your Last Line Of... · What They Are (and Aren't) · Are Your Bilge Pumps...
[61]
Simple Bilge Pump Maintenance - Sportsman Boats
Feb 7, 2024 · Simple Bilge Pump Maintenance · 1. Cleaning and Debris Removal: · 2. Testing the Internal Sensor: · 3. Backup Features: · 4. Manual Activation: ...
[62]
Bilge Care - BoatUS Foundation
Bilge Care · Keep your engine tuned to minimize oil leaks. · Check that clamps and filters are sealed properly. · Inspect hoses and belts for peeling or cracking.<|separator|>
[63]
Comprehensive Guide to Vessel Bilge System Troubleshooting
Aug 21, 2023 · Clogging and Blockages: One of the most frequent issues in bilge systems is clogging and blockages in the bilge pump and associated pipes.
[64]
Bilge Pump Troubleshooting - BoatUS
This flow chart will help you check each component, find the problem, fix it, and get on your way again as swiftly as possible.
[65]
Bilge Pump Troubleshooting Tips - Surfside Marina
Dec 11, 2023 · If the bilge pump runs continuously, even when there is no water in the bilge, it may indicate a malfunctioning float switch or a wiring issue.
[66]
How to Fix or Replace a Bilge Pump - Yachting Magazine
Aug 1, 2024 · They might get clogged, they may suck in grit or bits that jam or damage the impeller, and they can suffer from electrical issues too. In fact, ...
[67]
Bilge Pump Installation and Maintenance Tips - Practical Sailor
MAINTENANCE. Regular and frequent inspections of your bilge pumps are a must and should be included in the vessels overall preventative maintenance program.<|separator|>
[68]
Quick Tip: Bilge Pump Maintenance | Mercury Marine
A scrub brush – or even an old toothbrush – can help clean the crevices. Then rinse the pump with clean water, taking care to keep the wires and connector dry.
[69]
https://partsvu.com/blogs/boating-resources/the-ultimate-guide-to-bilge-pumps-features-types-troubleshooting
[70]
Port State Control – A summary of Q2 detentions - DNV
Aug 12, 2025 · ISM-related deficiencies · Auxiliary engine · Propulsion main engine · Bilge pumping arrangements.Missing: common | Show results with:common
[71]
MARPOL Annex I – Prevention of Pollution by Oil
MARPOL Annex I aims to prevent oil pollution through regulations on tanker construction, double hulls, segregated ballast tanks, and discharge standards.
[72]
Bilge water legislation - Wärtsilä
Current MARPOL legislation stipulates that separated bilge water containing 15 ppm or below in water can be disposed into international waters.
[73]
MEPC.107(49) - Bilge Water Discharge Regulations - Rivertrace
These guidelines require vessels to have equipment that effectively reduces the oil content in bilge water discharge to 15 parts per million (ppm) by volume or ...
[74]
Regulation 14 - Oil filtering equipment - MARPOL Training Institute
All oily bilge water shall be retained on board for subsequent discharge to reception facilities.
[75]
[PDF] resolution mepc.205(62) - International Maritime Organization
Jul 15, 2011 · 1.1.3 It has been recognized that the best measure to prevent pollution resulting from oily bilge water is installation of Integrated Bilge ...
[76]
Vessel Incidental Discharge National Standards of Performance
Oct 9, 2024 · The final rule establishes both general and specific discharge standards of performance for approximately 85,000 international and domestic non- ...
[77]
Commercial Vessel Discharge Standards | US EPA
Jul 17, 2025 · Homepage for information on regulations for discharges incidental to the normal operation of non-military, non-recreational (i.e., ...
[78]
40 CFR § 1700.36 - Surface vessel bilgewater/oil-water separator ...
(b) Surface vessels equipped with an oil-water separator must not discharge bilgewater and must only discharge oil-water separator effluent through an oil- ...
[79]
Discharges and the EPA's Standards of Performance | US EPA
Jul 2, 2025 · The requirements for bilges are found in 40 C.F.R. 139.11. Boilers. Boiler blowdown is the discharge of water and constituents from the ...
[80]
Directive on Ship-Source Pollution Amended - eucrim
Jan 28, 2025 · The Directive updates the 2005 legal framework and incorporates into Union law international standards on illegal discharges from ships at sea.
[81]
EU actions on safety and environment protection
Directive (EU) 2019/883 establishes a framework ensuring a consistent reduction of marine pollution by requiring Member States to provide adequate waste ...
[82]
Invariably Undetected, Ships are Dumping Oily Water in Europe's ...
Mar 22, 2022 · Ships are still illegally dumping wastewater in Europe's seas and European Union efforts to tackle them are falling woefully short.<|control11|><|separator|>
[83]
Oily water separator - Further clarifications on requirements ... - DNV
Oct 12, 2023 · An oily water separator (OWS), bilge separator or oil filtering equipment is required by MARPOL Annex I, Regulation 14 to be installed on any ...
[84]
Bilge Care and Preventing Oil Spills
Practice preventive engine maintenance: Use oil absorbents and don't pump oily bilge water overboard.
[85]
Toxicity of treated bilge water: The need for revised regulatory control
Jan 30, 2017 · Water accumulating in the bottom of ships (bilge water), contains a mixture of oil, detergents and other compounds from on board activities.
[86]
Mixing Oil and Water : Oil in the Ocean
Jun 23, 2004 · Long-term effects of oil exposure can alter the physiology and ecology of populations of marine organisms, especially those found in sensitive ...
[87]
[PDF] Sources of Water Pollution from Marinas and Recreational Boating
Pollutants that cause these problems get into the water through storm water runoff, discharges from boats, and spills of fuel or bilge water. Low Dissolved ...
[88]
Ten years of oil pollution detection in the Eastern Mediterranean ...
Aug 5, 2024 · Operational discharges from ships, specifically bilgewater, raise environmental concerns. This black liquid mixture, containing oil, water, ...
[89]
Cargo ships dumping oil into the sea go unpunished - DW
Mar 22, 2022 · Even bilgewater that has been treated to adhere to this legal limit has been found to be toxic to marine organisms, according to research ...<|control11|><|separator|>
[90]
[PDF] Bilge Dumping: What It Is, Why You Should Care, and ... - SkyTruth
Bilge dumping is when a vessel illegally releases untreated, oily wastewater into the ocean, creating an oily slick.<|control11|><|separator|>
[91]
Abatement of bilge dumping: Another piece to achieve Maritime ...
The release of bilge water into the oceans presents a high environmental risk and poses a serious threat to marine life, which are already affected ...
[92]
Pollution From Commercial Vessels Machinery Space Bilges
Dec 3, 2021 · Any liquid entering the bilge system including bilge wells, bilge piping, tank top or bilge holding tanks is considered oily bilge water.Inspections · Similar Situations In Other... · ResultsMissing: debates | Show results with:debates
[93]
US Environmental Protection Agency (EPA) Announces Final Vessel ...
Incidental discharges may contain pollutants or invasive species that can adversely impact aquatic ecosystems and human health. Vessel discharge pollution ...
[94]
New technology for ship bilge and oily water separation - Malakhov
Aug 13, 2023 · Authors offer a new method for bilge and oily water (BOW) separation which is based on the use of a hydrodynamic process of supercavitation ...
[95]
Biodegradation and optimization of bilge water in a sequencing ...
A sequencing batch reactor is proposed to treat bilge water. · The operating parameters were optimized using the response surface method. · The practical ...
[96]
Global Oily Bilgewater Separators Market Growth 2025-2031
Rating 4.5 (10) The global Oily Bilgewater Separators market size is set to grow from US$ 1235 million in 2025 to US$ 1548 million in 2031; it is expected to grow at a CAGR ...
[97]
New MARPOL discharge rules for Red Sea and Gulf of Aden
Oct 11, 2024 · From 1 January 2025, new restrictions will apply to ships regarding the discharge of garbage, oil, and oily mixtures within the Red Sea and Gulf of Aden ...All Ships · Oil Tankers · Indian Navy Recovers Bodies...
[98]
IMO Sub-committee on pollution prevention and response (PPR 12)
Feb 3, 2025 · PPR 12 finalized guidance on in-water cleaning of ships' biofouling and guidelines on certification of Selective Catalytic Reduction systems.Missing: common | Show results with:common
[99]
Special report 06/2025: EU actions tackling sea pollution by ships
Mar 4, 2025 · We assessed EU actions to address ship-source seawater pollution. Overall, EU rules improved, but implementation weaknesses existed and data was insufficient ...
[100]
TURKISH WATERS SHIP SOURCE POLLUTION - Maritime Mutual
Feb 27, 2025 · The regulations relating to ship source pollution in Turkish waters are stricter than those prescribed by MARPOL and their enforcement is exacting.
[101]
The Pirate Lexicon: Mastering Nautical Narratives
Bilge rat. Definition: Quite the insult! Refers to rats that scuttle around in the bilge of a ship, the lowest part. Historical Anecdote: The bilge is the ...
[102]
A Swashbuckler's Guide to Nautical Terms and Pirate Slang
Sep 25, 2024 · So, when ye call someone a “bilge rat,” ye're telling them they're a disgusting, stinking, bottom-dwelling creature. Perfect for those moments ...Missing: origin | Show results with:origin
[103]
Pirate Terminology
Bilge rat - (1) A rat living in the bilge of a ship. It is considered the lowliest creature by pirates, but many pirates take to eating the animals to survive.Missing: origin slang
[104]
U.S. Navy Glossary ("Lingo") - Andy Adkins
Bilge Rat: A term used to describe someone who works in the engineering spaces. Bilge Turd: A derogatory term for a "Boiler Technician," typically from ...
[105]
Rat | Pirates of the Caribbean Wiki - Fandom
The term "bilge rat" originally referred to the rats who lived in a bilge at the bottom of the ship. It typically referred to members of a ship's crew who ...Missing: origin slang
[106]
BILGE WATER Definition & Meaning - Dictionary.com
Slang., foolish, worthless, or offensive talk or ideas; nonsense; rubbish. Discover More. Word History and Origins. Origin of bilge water. First recorded in ...
[107]
BILGE definition in American English - Collins Dictionary
1. the bulge of a barrel or cask 2. the rounded, lower exterior part of a ship's hull 3. a. [also pl.] the bottommost interior part of a ship.
[108]
Bilge - Idioms by The Free Dictionary
slang To vomit. Geez, I thought I was going to drain the bilge out on that boat—I felt so seasick! When I had the flu, I spent most of the time draining the ...
[109]
Nautical words - Scarborough Maritime Heritage Centre
Bilge Water: Now slang for nonsense, the term bilge water is the water that collects and stagnates in the bilge of a ship. Binge: Nautical term for rinsing ...
[110]
A PIRATE'S GLOSSARY - Talk Like a Pirate - Buy Rope
A ship holed or pierced by its own anchor. bilge rat. (1) A rat living in the bilge of a ship. It is considered the lowliest creature by pirates, but ...
[111]
Moby-Dick Chapter 54: The Town-Ho's Story Summary & Analysis
Thus, one day, when Steelkilt was working the bilge pump with other sailors ... Upgrade to unlock the analysis and theme tracking for all of Moby-DickMoby-Dick!
[112]
Treasure Island by Robert Louis Stevenson: Chapter 11
Literature Network » Robert Louis Stevenson » Treasure Island » Chapter 11 ... Don't you get sucking of that bilge, John. Let's have a go of the rum ...
[113]
Treasure Island by Robert Louis Stevenson: Chapter 25
Literature Network » Robert Louis Stevenson » Treasure Island » Chapter 25 ... Well, HE'S dead now, he is--as dead as bilge; and who's to sail this ship, I don't ...
[114]
Full Glossary for The Sun Also Rises - CliffsNotes
bilge (Slang) worthless or silly talk or writing; nonsense. bladder a bag consisting of or lined with membraneous tissue in the body of many animals ...<|separator|>
[115]
Oceanic Agency in Joseph Conrad's Typhoon - jstor
along with dirty bilge water and people at work” (117). This renewed emphasis on physical work and embodied experience in literary maritime studies goes ...