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Damage controlman

A Damage Controlman (DC) is an enlisted in the United States Navy specializing in the maintenance, repair, and operation of damage control equipment and systems to preserve , watertight integrity, readiness, and defense against chemical, biological, radiological, , and explosive (CBRNE) threats. Damage Controlmen perform organizational and intermediate-level maintenance on critical systems, including , emergency alarms, , and safety equipment, while also conducting emergency repairs such as pipe patching, , plugging, and during crises. They supervise damage control teams, plan and execute drills, and lead responses to onboard emergencies, acting as to mitigate risks from fires, flooding, or CBRNE incidents. In addition to hands-on technical duties, Damage Controlmen instruct shipboard personnel in damage control procedures, CBRNE defense techniques, and system maintenance, ensuring crew-wide preparedness through training and simulations. They also maintain records, reports, and watertight closures, often serving in roles like to enforce standards. Entry into the rating requires an (ASVAB) score of at least 193 in specific combinations (VE + AR + MK + AS or VE + AR + MK + MC) and normal color perception, followed by specialized training at Damage Controlman "A" . The work environment spans sea and shore duties, typically in noisy, physically demanding settings like machinery spaces or flight decks, where Damage Controlmen operate 24/7 to safeguard ships and crews.

Overview

Definition and Role

A Damage Controlman (DC) is a specialized enlisted rating in the United States Navy responsible for maintaining ship integrity through expertise in damage control, firefighting, ship stability, and chemical, biological, radiological, nuclear, and explosive (CBRNE) defense measures. These sailors serve as first responders, focusing on preventing and mitigating accidents or combat-related damage to ensure crew safety and operational continuity. The rating was officially established in 1948. The rating insignia features a specialty mark consisting of a crossed ax and , centered between the eagle and chevrons on the rating badge worn on the left sleeve of service uniforms. This symbol represents the tools used in emergency repairs and , with the badge typically displayed in white embroidery on blue uniforms or on white uniforms. Within the ship's organization, Damage Controlmen operate under the oversight of the , who serves as the primary advisor to the damage control officer on , CBRNE defense, and overall readiness. They integrate into the broader damage control team, contributing to the vessel's emergency response framework that overlaps with general naval operations. In non-emergency settings, DCs conduct routine inspections and perform organizational and intermediate-level on damage control equipment and systems to proactively prevent potential hazards.

Importance in Naval Operations

Damage Controlmen (DCs) play a pivotal role in enhancing ship by rapidly addressing and mitigating threats such as fires, flooding, and structural damage, thereby preventing minor incidents from escalating into mission-ending catastrophes that could disable vessels or endanger lives. Their expertise in maintaining watertight and gastight integrity allows ships to withstand impacts from , collisions, or environmental hazards, ensuring continued operational capability. This proactive approach to damage prevention and control is fundamental to the U.S. Navy's doctrine of total ship , where DCs oversee equipment readiness and lead immediate responses to isolate and neutralize threats. In fleet operations, DCs contribute significantly to sustained naval presence in high-threat environments by enabling vessels to recover quickly from hazards and maintain . Their focus on rapid hazard response and system repairs supports extended deployments, allowing the fleet to without interruption from damage accumulation. By ensuring the structural and environmental integrity of ships, DCs facilitate resilience against asymmetric threats like mines or missiles, which are prevalent in contested waters. Real-world examples underscore the impact of DC efforts in conflicts, such as during the operations where dedicated damage control preserved damaged vessels and minimized losses. In 1988, the struck a , suffering a broken and severe flooding, but the crew's DC measures—including manual restarts, jettisoning, and improvised sealing—stabilized the ship with no fatalities, allowing it to return to service after repairs. Similarly, the (FFG-31), hit by two missiles in 1987, endured 18 hours of fires but survived due to coordinated and external support, despite 37 deaths, highlighting how DC training directly saves ships in combat. DCs integrate seamlessly with other naval ratings to bolster overall safety and mission continuity, distinct from direct functions by emphasizing preventive and restorative actions that protect the entire team. As , they train and direct all-hands in damage scenarios, fostering coordinated efforts across departments to control flooding or extinguish fires without compromising operational . This collaboration ensures that while roles focus on offense, DCs safeguard the platform's and , ultimately enabling the to sustain prolonged engagements.

History

Origins and Establishment

Prior to the formal establishment of the Damage Controlman rating, damage control duties in the U.S. Navy were primarily handled by general seamen, boatswain's mates, engineers, and deck personnel without a dedicated specialist role. These ad-hoc teams managed firefighting, flooding control, and emergency repairs during operations, often under intense combat conditions. Experiences from World War II, particularly the Japanese attack on Pearl Harbor in December 1941, underscored the limitations of this approach; while counter-flooding efforts saved ships like the USS West Virginia (BB-48), inadequate training and equipment contributed to significant losses, such as the USS Arizona (BB-39). Battles in the Pacific Theater further highlighted the need for specialized expertise, as ships faced repeated damage from kamikaze attacks and naval engagements at locations like and . Crews relied on improvised methods to combat fires, stabilize hulls, and restore functionality, with survival often depending on rapid, coordinated responses by non-specialized personnel. These wartime lessons, combined with earlier influences from and interwar analyses of foreign naval practices, prompted calls for reform; a 1936 article in the Naval Institute Proceedings proposed creating a dedicated Damage Controlman rating to professionalize these tasks. The Damage Controlman (DC) rating was formally established in 1948 through the Navy Enlisted Classification system, consolidating the expertise of several existing ratings including Specialist (F) (Fire Fighters), Carpenter's Mate, Chemical Warfareman, and Painter. This creation was driven by post-World War II evaluations from the Navy Bureau of Ships, which recommended enhanced training and specialized personnel to address vulnerabilities exposed in combat. Initially, the rating focused on ship stability, advanced fire suppression, and repair techniques tailored to evolving post-war vessel designs amid emerging Cold War threats.

Evolution and Key Developments

Following the establishment of the Damage Controlman (DC) rating in , the role expanded significantly in the post-World War II era to address the Navy's adoption of , beginning with the commissioning of in 1954, requiring DCs to incorporate radiological monitoring and containment protocols as part of broader and emergency response duties. In the period, the DC rating underwent structural changes, merging into the (HT) rating in 1972 to streamline shipboard maintenance before being re-established as a distinct specialty in 1987, with formalized integration of Chemical, Biological, Radiological, and Damage (CBR-D) responsibilities to counter heightened risks of radiological incidents from nuclear-armed adversaries. This evolution emphasized proactive defense against environmental and weaponized hazards, driven by doctrinal shifts toward total ship survivability in prolonged confrontations. From the 1990s to 2025, DC practices modernized through the adoption of digital monitoring systems, such as the Advanced Damage Control System (ADCS), which provides real-time data logging and automated incident management to enhance response efficiency on contemporary vessels. Full gender integration of DC teams, completed Navy-wide by 2016, fostered inclusive training and operations without altering core competencies. The 2000 USS Cole bombing, where DCs like Senior Chief William Merchen led firefighting and stability efforts amid the attack's 40-by-60-foot hull breach, directly influenced post-incident reforms, including intensified anti-terrorism drills and vulnerability assessments. A key milestone came in 2017 with Navy-wide Physical Readiness Program reforms, which forgave prior fitness failures for nearly 50,000 sailors and tied evaluations to mission-essential tasks like damage control to bolster overall readiness. Ongoing adaptations address emerging hypersonic threats, necessitating reinforced hull designs and rapid-repair protocols for high-velocity impacts, alongside climate-related hazards such as intensified storms, prompting resilient infrastructure planning under the Department of the Navy's Climate Action 2030 strategy.

Duties and Responsibilities

Core Operational Tasks

Damage Controlmen (DCs) in the serve as during emergencies, leading efforts by operating hoses, applying aqueous film-forming foam (AFFF), and actuating systems like to suppress fires aboard ships. They also control flooding by dewatering compartments using portable pumps and eductors, installing shoring to support structures, and applying patches to breaches or leaks to prevent further ingress. To stabilize the , DCs perform counter-flooding operations, calculating the effects of damage on and list. In maintenance routines, DCs conduct regular inspections of watertight fittings, doors, hatches, and closures to ensure integrity, repairing or balancing them as needed to maintain the ship's compartmentalization against potential breaches. They also service fire mains and related systems, performing hands-on repairs to piping, fixtures, and emergency equipment to uphold operational readiness. For chemical, biological, radiological, , and (CBRNE) operations, DCs detect hazardous materials using systems like the Improved Point Detection System-Liquid Reporter (IPDS-LR) and Joint Biological Point Detection System (JBPDS), while monitoring levels with dosimeters to assess risks. They execute procedures, establishing Contamination Control Areas and applying mitigation techniques to neutralize threats from chemical agents or radiological sources. DCs maintain comprehensive documentation by logging damage control events, updating compartment check-off lists, and preparing readiness reports for the ship's , including daily draft calculations to track stability metrics. These records ensure accountability and inform post-event analyses.

Training and Team Leadership

Damage Controlmen (DCs) play a pivotal role in assisting the Damage Control Assistant (DCA) with team organization aboard naval vessels, including the formation and drilling of repair lockers, station bills, and specialized response teams tailored to scenarios such as . Repair lockers serve as central hubs stocked with essential gear, where DCs assign and train personnel to repair parties, including roles like team leaders, on-scene leaders, and attack coordinators, ensuring rapid mobilization during emergencies like fires or flooding. Station bills outline personnel assignments to these teams based on ship configuration and size, as detailed in the ship's Battle Bill, while response teams such as the or rapid response teams are drilled for immediate action in multi-casualty situations. This organizational support enhances the ship's overall damage control battle organization, from Repair 1 through Repair 8 and Damage Control Central. In their instruction duties, DCs conduct hands-on drills for the general crew, focusing on basic techniques for A, B, C, and D fires, flooding control methods like pipe patching and shoring, and CBRNE awareness to mitigate hazards such as toxic gas releases. These sessions emphasize practical skills, including the use of and equipment, and are designed to build proficiency across the crew in core operational tasks like emergency repairs and stability maintenance. DCs evaluate participant performance against standards outlined in NAVEDTRA 14057 and related guidelines, documenting deficiencies in records to ensure compliance and readiness. The Damage Control Training Team (DCTT), often led by DCs, delivers these lectures and practical evolutions, fostering a of through regular, scenario-based instruction. Leadership progression for DCs spans from E-1 to E-9, evolving from entry-level support roles to senior supervisory positions that oversee junior DCs and coordinate with other shipboard departments during exercises. At E-4 and E-5 levels, DCs serve as leading petty officers, supervising casualty response and firefighting teams while instructing in DC and CBRNE methods; by E-6, they manage work centers and administer training programs, including coordination with engineering and operations departments for integrated drills. Senior DCs at E-7 through E-9 act as divisional or departmental leading chief petty officers, leading repair locker teams, verifying mission-oriented protective posture levels, and ensuring cross-departmental alignment in damage control efforts, often requiring advanced certifications like the Senior Enlisted Damage Control course. This structured advancement, supported by leader development courses from foundational to senior enlisted academy levels, equips DCs to supervise increasingly complex teams and maintain ship-wide readiness. DCs are instrumental in exercise planning, designing ship-specific DC, firefighting, and CBRNE evolutions that simulate realistic threats like simultaneous flooding and fires, incorporating props and multi-hit scenarios to test response capabilities. These evolutions are scheduled by the DCA with DC input, adhering to standards in NWP 3-20.31 and NAVEDTRA guidelines, and involve collaboration across departments to address ship-unique vulnerabilities. Following each drill, DCs lead after-action reviews to analyze , identify gaps, and implement improvements, such as updating battle bills or and assistance bills, thereby enhancing overall ship readiness and preventing real-world casualties.

Training and Qualification

Initial Training Pipeline

The initial training pipeline for Damage Controlmen (DCs) commences at Recruit Training Command (RTC) in Great Lakes, Illinois, a 9-week program that instills foundational and naval skills for all enlisted Sailors. Recruits learn basic through practical exercises in line handling, knot tying, and boat operations; fundamentals via simulated fire scenarios using hoses and extinguishers; and an introduction to damage control (DC), including concepts of , compartmentation, and emergency response roles. This phase emphasizes physical fitness, teamwork, and the "Sailorization" process to prepare individuals for shipboard life, with DC-specific elements tested during week 6 through battle stations drills. Upon graduating RTC, DC candidates enter the engineering accession pipeline at the Surface Warfare Engineering School Command (SWESC) in , beginning with the 14-day Basic Engineering Common Core (BECC) course. BECC covers essential engineering safety protocols, tool usage, and introductory systems knowledge applicable to surface ship environments, bridging training to rating-specific expertise. This is followed by the 10-week DC "A" School (course code DCE010010), which utilizes NAVEDTRA 14057 as its primary instructional and focuses on specialized competencies. Key modules include DC organization and shipboard team structures; emergency communications using sound-powered phones and general announcing systems; advanced tactics with fixed and portable equipment; and basic CBR-D procedures for detecting and mitigating chemical, biological, radiological, and threats. Instruction blends approximately 40% classroom theory with 60% hands-on labs, such as live-fire evolutions and watertight integrity repairs, to build proficiency in real-world scenarios. Completion of "A" School awards the Navy Enlisted Classification (NEC) 5101, designating graduates as qualified DCs eligible for fleet assignment, along with certifications in self-contained breathing apparatus (SCBA) donning and operation, and portable firefighting pump setup and maintenance. These hands-on validations ensure immediate operational readiness for core tasks like fire boundary control and flooding mitigation. The full pipeline, from RTC arrival to "A" School graduation, totals approximately 4 months, requiring prerequisites such as a minimum ASVAB composite score of VE + AR + MK + AS = 193 or VE + AR + MK + MC = 193 and normal color vision.

Advanced and Specialized Qualifications

Damage Controlmen pursuing advanced qualifications beyond initial training focus on , specialized technical skills, and ongoing to enhance their roles in shipboard response and . These advancements typically occur at the E-5 and E-6 paygrades, building on foundational "A" School knowledge through targeted courses and certifications that prepare sailors for supervisory positions and complex scenarios involving chemical, biological, radiological, and nuclear (CBRN) threats. Key advanced training includes "C" School programs leading to Navy Enlisted Classifications (NECs) such as 756B (Shipboard CBR-D Operations and Training Specialist), which equips DCs with expertise in CBR-D doctrine, equipment maintenance, and advisory roles for shipboard personnel. This specialized training is conducted at facilities like the Surface Warfare Engineering School Command in , , emphasizing practical instruction in defensive measures against weapons of mass destruction. Similarly, NEC U46A (Senior Enlisted Damage Control and Training Specialist) is available for E-7 to E-9 levels, focusing on program oversight, system troubleshooting, and serving as subject matter experts in damage control operations. Qualifications progression at the E-5/E-6 level includes roles such as , which involves coordinating emergency response teams during drills, and , a requiring completion of the four-week MTS course to develop instructional skills for training shipmates in damage control procedures. DCs must also achieve biennial recertifications in core areas like techniques and calculations to maintain operational readiness, often through shipboard assessments and refresher courses aligned with safety instructions. Additional qualifications, such as (SW) pin and Afloat Training Specialist (ATS), further support leadership advancement by validating expertise in integrated ship operations. Fleet-specific training emphasizes practical application through shipboard qualifications and drills, including Damage Control Training Team (DCTT) exercises that simulate real-world casualties and integrate with like automated monitoring systems for watertight integrity and fire suppression. On platforms such as , DCs participate in Train-to-Qualify (T2Q) programs, which use simulation-based training to certify proficiency in automated damage control tools before live-fire evolutions. These experiences ensure seamless coordination with multi-rate teams during high-tempo operations. Career milestones for DCs include progression to Chief Damage Controlman (DCC) at the E-7 level, requiring qualifications like Division Leading Chief Petty Officer (DLCPO) and completion of the Senior Enlisted Academy (SEA), with opportunities for warrant officer commissioning through programs such as the Medical Enlisted Commissioning Program (MECP) or Officer Candidate School (OCS) starting at E-6. Advanced DCs often transition to instructor roles at training commands, managing curricula for both initial and specialized courses to sustain Navy-wide damage control proficiency.

Equipment and Systems

Firefighting and Emergency Gear

Damage Controlmen (DC) rely on specialized portable gear for immediate fire suppression and emergency response during shipboard incidents. The primary respiratory protection device is the Self-Contained Breathing Apparatus (SCBA), which provides a 30- to 45-minute air supply from composite cylinders pressurized to 4,500 psi, enabling entry into smoke-filled or oxygen-deficient compartments. SCBAs are equipped for on-scene leaders and nozzlemen, often including voice amplifiers for communication, and are donned with a facepiece seal test prior to use. Maintenance follows NAVSEA standards, including visual inspections after each use, monthly by maintenance personnel, and every six months by the ship's crew, with hydrostatic testing every three years for glass-fiber-reinforced plastic (GFRP) cylinders or five years for carbon-fiber-reinforced plastic (CFRP) variants. Forcible entry tools, such as firefighting axes, dogging wrenches, pry bars, bolt cutters, sledgehammers, and hydraulic jacks, are carried in canvas bags designed to fit through watertight scuttles, allowing accessmen to breach compartments quickly. Portable extinguishers complement this gear, including 15-pound CO2 units for Class C electrical fires (projecting 6-9 feet for 40 seconds) and Aqueous Film-Forming Foam (AFFF) applicators producing foam from 2.5-gallon concentrates for small fuel spills. These items are inspected periodically by DC petty officers (DCPOs) under the Planned Maintenance System (PMS), with CO2 cylinders recharged using transfer units and grounded to prevent static discharge. Fixed firefighting systems on U.S. vessels provide automated suppression for larger fires, particularly in high-risk areas. AFFF stations, using 6% mixed with , are standard in machinery spaces and on flight decks of modern ships, including Arleigh Burke-class destroyers, with tanks ranging from 50 to 3,500 gallons and pumps delivering 12 to 450 gallons per minute. These systems apply foam to the base of Class Bravo () fires via hoses limited to 150 feet horizontally or 300 feet vertically downstream to maintain pressure. 2 and halogenated agents like 1301 serve as alternatives for enclosed spaces on legacy vessels, as the U.S. continues phase-out efforts under environmental regulations; 2 hose-and-reel stations use two 50-pound cylinders for direct application (4-6 foot range), while 1301 fixed flooding systems achieve 5-7% in 10 seconds for machinery rooms, requiring a 60-second post-discharge soak and evacuation. Sprinkler systems, including water-based variants in living areas and magazine sprinklers delivering 2-4 gallons per minute per square foot, enhance protection on Arleigh Burke-class destroyers. for these systems involves PMS checks, testing for AFFF (limit of 2,000 ), and weighing of 2 bottles by DCPOs. Deployment protocols emphasize safety and coordination, with DCmen operating in attack teams typically comprising at least two personnel per hose line, directed by an on-scene leader using the Navy Firefighting Thermal Imager (NFTI) to assess conditions. Entry into spaces requires oxygen levels above 19.5%—the threshold for oxygen-deficient atmospheres—and carbon monoxide below 50 ppm (permissible exposure limit), with SCBAs mandatory in smoke-filled or toxic atmospheres to prevent asphyxiation. Fire boundaries are set before direct attacks with charged hoses, avoiding electronics spaces, while indirect methods use water fog through openings; post-suppression, atmospheres are tested for safe re-entry. Recent innovations address emerging risks, such as lithium-ion battery fires in electric propulsion systems, where 2023 guidance from Naval Sea Systems Command (NAVSEA) incorporates specialized suppression like enhanced ventilation, water deluge, and submersion protocols to mitigate thermal runaway, integrated into DC equipment for unmanned vehicles and modern hulls. As of 2023, NAVSEA introduced containerized suppression systems like the Compact Lithium Storage and Suppression In a Container (CLASSIC) for safe handling of Li-ion batteries, featuring integrated fire detection, gas extraction, and water-based mitigation.

Damage Control and CBR-D Tools

Damage Controlmen utilize specialized structural tools to repair hull breaches and reinforce weakened areas during emergencies. Shoring kits, consisting of props, wedges, sholes, and strongbacks, are employed to bulkheads and decks, preventing further structural by distributing loads across damaged sections. Welding equipment, including portable arc welders and oxy-acetylene torches, enables metalwork repairs to hull breaches and broken fittings, ensuring temporary restoration of integrity under combat or collision conditions. Collision mats, often constructed from layered canvas or synthetic materials, are deployed for hull patching to seal underwater leaks by conforming to irregular surfaces and securing with lines or clamps. Portable pumps, such as the P-100 and P-250 units, play a critical role in removing floodwater, capable of delivering 100-250 gallons per minute (GPM) at discharge pressures up to 100 pounds per () to combat progressive flooding. These pumps are powered by or electric engines and integrated into damage control lockers for rapid deployment. For maintaining ship stability amid damage, Damage Controlmen employ inclinometers to measure the vessel's and , guiding counter-flooding operations via control interfaces to redistribute weight and restore equilibrium. The (GM), a key stability metric, is calculated as GM = - KG, where is the distance from the to the metacenter and KG is the height of the center of gravity above the ; this value informs adjustments to prevent . In chemical, biological, radiological, and damage (CBR-D) defense, Damage Controlmen handle detection and protection equipment to mitigate contamination threats. M8 detection paper identifies liquid chemical agents like (G and V series) and (H series) by color change upon contact, while M9 paper detects aerosols of these agents in vapor or droplet form. Protective suits such as the Joint Service Lightweight Integrated Suit Technology (JSLIST) provide overgarment protection against chemical and biological agents, featuring layers for extended wear in contaminated environments. kits, including the M291 skin decontaminating kit with reactive powder, neutralize agents on personnel and surfaces. Radiological survey meters like the AN/PDR-77 measure gamma and beta levels, aiding in and evacuation routing with probes for various dose rates. Maintenance of these tools falls under Damage Controlmen responsibilities, involving daily inspections, inventory tracking, and repairs to achieve full operational readiness as mandated by surface force directives. COMNAVSURFPAC instructions require verification that damage control equipment meets material condition standards, with maintained to support proficiency and ensure 100% of kits and devices.

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