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SMS Goeben


SMS Goeben was the second of two Moltke-class battlecruisers constructed for the , designed as fast, heavily armed capital ships capable of outrunning most battleships while delivering powerful gunfire. Launched on 2 March 1911 by in and commissioned on 2 July 1912, she measured 186.6 meters in length with a beam of 29.5 meters and displaced 25,400 tonnes at full load, powered by four Parsons steam turbines generating up to 85,661 shaft horsepower for a top speed of 27.5 knots. Her primary armament consisted of ten 28 cm (11-inch) SK L/50 guns in five twin turrets, supplemented by twelve 15 cm (5.9-inch) secondary guns, making her one of the most formidable warships in the pre-war . Stationed in the Mediterranean from late 1912 to safeguard German interests during the , Goeben—accompanied by the light cruiser SMS Breslau—faced British naval superiority at the outbreak of in August 1914. Under , she evaded pursuit by superior British forces, including three battlecruisers, through high-speed maneuvers and reached the on 10 August, where neutrality allowed passage to after diplomatic maneuvering and a nominal transfer to ownership on 16 August, renaming her Yavuz Sultan Selim. This "transfer" preserved German operational control while bolstering naval power, directly influencing the empire's alignment with the . On 29 October 1914, Yavuz bombarded Russian ports such as and , precipitating Russia's declaration of war and entry into the conflict alongside . Throughout , Yavuz Sultan Selim dominated operations, sinking Russian pre-dreadnoughts and supporting Ottoman ground forces, though she sustained damage from mines and shore batteries. Retained by the Republic of Turkey after 1923, she underwent modernizations, including enhanced anti-aircraft batteries, and served as Turkey's through without major combat, decommissioning in 1950 and being scrapped in 1973 after over six decades of service—the last surviving of her era. Her evasion and subsequent role underscored the strategic impact of naval mobility and alliance diplomacy in early 20th-century warfare.

Design and Construction

Specifications and Armament

SMS Goeben displaced 22,979 tonnes at standard load and up to 24,980 tonnes at full load. Her overall length measured 186.6 , with a beam of 29.4 and a draft of 9.19 meters when fully loaded. Designed for high-speed operations, she achieved a maximum speed of 28.4 knots during trials, surpassing the 25.5 knots specified in her design parameters. The ship's crew complement totaled 1,053 personnel. The primary armament comprised ten 28 cm SK L/50 guns mounted in five twin s: one forward ("A" ), two amidships in an arrangement ("B" and "C" s), and two ("D" over "E"). These Krupp-designed weapons, with a barrel length of 50 calibers, fired 302 kg shells at up to 900 meters per second , enabling an effective range of approximately 18,000 meters. Secondary batteries included twelve guns in casemates for anti-destroyer and support fire, supplemented by twelve 8.8 cm SK L/45 guns for close-range defense. Goeben also carried four 50 cm tubes submerged below the amidships.
ComponentQuantity and Type
Main Battery10 × 28 cm SK L/50 in 5 twin turrets
Secondary Guns12 × in casemates
Tertiary Guns12 × 8.8 cm SK L/45
Torpedo Tubes4 × 50 cm (submerged)
Relative to the British Indefatigable-class battlecruisers, which mounted eight 30.5 cm guns and reached speeds of about 26 knots on a lighter displacement of around 18,500 tonnes, Goeben's configuration yielded advantages in main battery gun count and trial speed through refined hull streamlining and efficient turbine integration characteristic of German pre-war naval architecture. This design emphasized balanced firepower projection and scouting capability, with the additional twin turret enabling a heavier broadside weight despite the smaller caliber.

Armored Protection and Propulsion

The armored protection of SMS Goeben reflected the philosophy of prioritizing speed and firepower over comprehensive battleship-level armor, with a main belt of cemented nickel-steel ranging from 76 mm to 280 mm thick amidships, tapering towards the bow and stern to reduce weight while safeguarding machinery and magazines against horizontal fire. Deck armor varied from 25 mm to 76 mm in thickness across two layers, providing against plunging shells and fragments in vital areas. faces were protected by up to 230 mm of armor, with barbettes at 230 mm and conning towers reaching 350 mm forward, embodying trade-offs that enhanced survivability in roles but exposed vulnerabilities in prolonged gunnery duels. Propulsion was provided by four Parsons direct-drive steam turbines on four shafts, powered by 24 coal-fired Schultze-Thornycroft boilers generating steam at 16 atmospheres, with a designed output of 51,289 shaft horsepower yielding 25.5 knots, though trials demonstrated up to 85,782 shp for sustained speeds exceeding 28 knots. This configuration enabled rapid evasion maneuvers, as evidenced during the 1914 Mediterranean pursuit. Fuel capacity of approximately 1,000 tons of coal in peacetime (expandable to 3,100 tons) supported a range of 4,120 nautical miles at 14 knots, though efficiency was constrained by coal dependency and pre-war boiler defects causing leaks and reduced reliability, which were partially mitigated prior to wartime operations.

Pre-War Operations

Commissioning and Early Deployments

SMS Goeben was laid down on 28 August 1909 at the shipyard in , launched on 28 March 1911, and commissioned into the on 2 July 1912 under the command of Kapitän zur See Phillip. The battlecruiser's entry into service marked a key enhancement to Germany's naval capabilities, designed for high-speed operations to support fleet and deter potential adversaries in overseas theaters. Following commissioning, Goeben conducted a brief and training exercises, including torpedo evasion maneuvers, primarily in the and regions to test her propulsion, armament, and crew proficiency. These operations, lasting approximately two months, ensured the ship reached operational readiness amid Germany's expanding naval presence strategy. By late , Goeben departed on 4 November alongside the SMS Breslau, forming the core of a fast scouting force for the Mediterranean Division. The deployment to the Mediterranean in November 1912 served German interests in projecting naval power and maintaining diplomatic influence in a strategically vital region, countering the naval dominance of the Triple Entente powers. Paired with Breslau, Goeben emphasized deterrence through superior speed and firepower, enabling rapid response to regional tensions while showcasing Imperial Germany's ability to sustain forward-deployed heavy units. Early activities included port visits and exercises, reinforcing the squadron's role in peacetime power projection without immediate combat engagement.

Mediterranean Division and Balkan Wars

In November 1912, amid the outbreak of the , the established the Mediterranean Division comprising the SMS Goeben and the light cruiser SMS Breslau to protect German nationals and commercial interests in Ottoman territories facing invasion by the . The squadron departed on 4 November and reached the Mediterranean theater by mid-month, operating primarily near Ottoman waters to signal deterrence against potential escalation involving European powers. This deployment underscored Germany's strategic interest in stabilizing the as a to Russian expansionism in the , aligning with broader pre-war efforts to cultivate alliance potential through naval demonstration rather than direct intervention. Neutrality obligations limited the division to patrols, port calls, and readiness postures, preventing offensive actions despite Ottoman requests for naval assistance against Greek and Bulgarian advances along coastal fronts. The Goeben's arrival nonetheless bolstered Ottoman , as her superior speed—exceeding 25 knots—and heavy 28 cm represented a technological edge absent in the enfeebled fleet, which had proven ineffective in prior regional conflicts. Logistical coordination with , including visits to Pola for potential refits and supply, highlighted early interoperability among navies, facilitating rapid response capabilities and foreshadowing wartime alignments. As the Second Balkan War erupted in June 1913, the division maintained vigilance in the Aegean and Adriatic, contributing indirectly to recovery of Eastern Thrace by deterring naval encirclement and enabling secure reinforcements. Rear Admiral assumed command in October 1913, post-armistice, but the prior year's operations had already deepened German- naval consultations, including technical exchanges that emphasized the Goeben's role in modernizing strategy against asymmetric threats. These activities tested the ship's endurance in extended deployments without major mechanical issues, validating her design for sustained Mediterranean service while avoiding escalation that could compromise German diplomatic flexibility.

World War I Service

Pursuit and Evasion in the Mediterranean

Following the on on 4 August 1914, Rear Admiral , commanding the German Mediterranean Division, directed SMS Goeben and SMS Breslau to neutral Italian ports at for coaling after their bombardment of Algerian coastal targets earlier that day. The ships arrived at on 5 August, where Italian authorities, bound by neutrality, permitted limited coaling under supervision, allowing Goeben to replenish approximately 1,800 tons of coal despite shortages that had plagued the squadron. intelligence accurately located the German vessels via wireless intercepts and agent reports, prompting to order Archibald Milne, commander of the , to intercept and engage Goeben with his battlecruisers Indefatigable and Inflexible. Milne's fleet, superior in number and including faster battlecruisers capable of 27 knots, was positioned primarily westward near and to safeguard troop transports to and monitor potential Austrian sorties from the Adriatic, diluting focus on an eastward pursuit. Churchill's directives emphasized protecting convoys and maintaining an Adriatic watch, with instructions to "follow her [Goeben] if you can do so without exposing your force to serious danger," which Milne interpreted conservatively amid concerns over Austrian . On 6 , as Goeben completed coaling amid diplomatic delays from inspections, Souchon executed a feint by signaling intentions toward the Adriatic before departing at dusk, steering eastward toward at forced speed. Souchon's tactical audacity exploited Goeben's recent refits in Pola, enabling sustained speeds of up to 27 knots despite leaking tubes and crew exhaustion, exceeding British estimates of her capabilities hampered by prior repairs. Rear Admiral Ernest Troubridge's cruiser squadron, dispatched from , shadowed but declined engagement on 7 August off , citing Goeben's 28 cm main guns outranging his 23.4 cm-armed armored cruisers and risks of for potential loss without decisive support. neutrality precluded British violation of at for attack, while Milne's battlecruisers, coaling at Bizerta and steaming south, failed to close the distance, allowing Goeben to outpace pursuers by maintaining 24-27 knots through the . Admiralty logs later revealed causal lapses in coordination, including delayed wireless confirmations of Goeben's eastward course and overreliance on diplomatic assurances from , which facilitated the escape despite Britain's overwhelming regional naval superiority. Souchon's gamble, informed by pre-war Ottoman-German naval talks, prioritized alliance potential over safer western breakout, evading capture through superior speed, command hesitation, and strategic misprioritization of Allied objectives. By 10 August, Goeben reached the entrance, her evasion complete after traversing over 1,000 nautical miles under constant threat.

Transfer to Ottoman Navy and Black Sea Bombards

Following the arrival of SMS Goeben and SMS Breslau at on 10 August 1914, German and authorities arranged a nominal transfer of the vessels to the to preserve the empire's declared neutrality while allowing continued German operational control. On 16 August 1914, the ships were officially handed over in a ceremony, with Goeben renamed Yavuz Sultan Selim and Breslau as Midilli; however, an underlying agreement stipulated that they would retain their German character, including crews predominantly composed of German personnel under , who was appointed to command the fleet. This arrangement effectively circumvented international neutrality laws, as the vessels flew the ensign but operated as extensions of German naval power. The transfer bolstered Ottoman naval capabilities in the Black Sea, where Russian forces held a significant advantage with multiple pre-dreadnought battleships and emerging dreadnought construction programs, against the Ottoman fleet's outdated ironclads. Souchon, leveraging the superior speed and firepower of Yavuz Sultan Selim—armed with ten 28 cm guns—pushed for offensive action to preempt Russian dominance. Despite Ottoman government hesitations and public denials of involvement, Souchon received authorization for a raid on Russian ports, framed as a strategic necessity to disrupt Russian naval preparations. On the morning of 29 October 1914, Yavuz Sultan Selim, accompanied by Midilli and Ottoman torpedo boats, executed the , marking the initial combat operations under the transfer agreement. Yavuz shelled the Russian naval base at for approximately 30 minutes, targeting fortifications, shipyards, and anchored vessels, while firing around 70 rounds amid return fire from coastal defenses. Simultaneously, Midilli and supporting units bombarded and , striking port infrastructure and merchant shipping. German accounts reported sinking several Russian transports and small warships, damaging pre-dreadnoughts at Sevastopol, and igniting fires across the targets, though Russian reports minimized losses to shore facilities and a few auxiliary vessels, with no capital ships sunk. This unprovoked attack, conducted while the still claimed neutrality, directly precipitated its entry into on the ' side, as declared war on 2 November 1914, followed by and on 5 November. The raid violated Ottoman neutrality assurances but aligned with the empire's strategic imperatives against Russian expansionism in the and control of key straits, enabling Yavuz to challenge Russian supremacy through subsequent patrols and engagements.

Major Engagements and Tactical Role

Following its integration into the Ottoman fleet, SMS Goeben (renamed Yavuz Sultan Selim) under Admiral Wilhelm Souchon pursued an aggressive raiding strategy in the Black Sea from 1915 onward, emphasizing hit-and-run sorties against Russian merchant shipping and coastal targets to compensate for the Ottoman navy's qualitative and numerical disadvantages. This doctrine prioritized disruption of Russian logistics over direct fleet engagements, as the Russian Black Sea Fleet transitioned from pre-dreadnoughts to dreadnought superiority with the commissioning of the Imperatritsa Mariya-class battleships in late 1915. Souchon's tactics involved coordinated operations with the light cruiser SMS Breslau (later Midilli), incorporating mine-laying to channel Russian movements and protect Ottoman flanks, thereby sustaining a viable naval threat despite repeated damages to Goeben. A notable early engagement occurred on 10 May 1915, when Goeben clashed with the Russian pre-dreadnoughts Evstafi and Ioann Zlatoust off the Anatolian coast; Goeben inflicted heavy damage on Evstafi with its superior 28 cm guns, but absorbed multiple hits resulting in 105 killed and 59 wounded aboard. Subsequent raids, such as the sinking of two Russian merchant ships on 2–3 April 1915, demonstrated Goeben's effectiveness in interdicting supply lines, which empirically tied down Russian naval assets and contributed to logistical strains on the front by limiting unescorted convoys. Through 1916–1917, Goeben and Breslau conducted over a dozen joint sorties, laying extensive minefields that inflicted losses on Russian submarines and smaller vessels while avoiding decisive battles against the reinforced dreadnought squadron. In evaluating Goeben's tactical role, sortie data reveals a pattern of high operational tempo—averaging monthly raids in —with verifiable sinkings of merchant tonnage exceeding direct losses inflicted on the Ottomans, though no ships were sunk. Coordination with Breslau amplified impact through combined gun and threats, while warfare neutralized numerical edges, as evidenced by the stranding or damaging of several destroyers and in Ottoman fields. This asymmetric approach yielded favorable loss ratios for the Ottomans, with Goeben sustaining repairable battle damage across engagements but inflicting disproportionate economic attrition on Black Sea commerce, estimated at dozens of vessels disrupted or sunk by mid-1916. The final major engagement involving Goeben shifted to the Aegean on 20 January 1918 during the , where it sortied with Midilli and four destroyers to target Allied blockaders; Goeben sank the monitors HMS Raglan and HMS M28 with accurate 28 cm fire, eliminating key threats to the . However, both ships struck British-laid mines—Midilli twice, sinking with heavy loss of life, and Goeben twice, forcing it aground near Nagara Point for temporary repairs—highlighting mines as a persistent tactical vulnerability despite offensive successes. This action underscored Goeben's enduring role in offensive operations, preserving capabilities into 1918 amid Russian withdrawal post-Brest-Litovsk.

Interwar and Post-War Service

Repairs, Refits, and Modernization

Following the in 1918, Yavuz Sultan Selim (formerly SMS Goeben) underwent initial repairs in Ottoman and then Turkish facilities to address cumulative World War I damage, including three mine strikes in January 1918 off Imroz that caused extensive hull breaches requiring cofferdams for temporary sealing. These efforts, conducted in and later docks with limited resources, prioritized seaworthiness over full restoration, as comprehensive work was deferred due to postwar instability and resource constraints. By rejecting Allied demands under the for scrapping major warships, the Turkish government preserved the vessel, leveraging its robust German engineering—which featured high-quality armor and Parsons turbines—to justify investments in longevity rather than immediate disposal. A major refit commenced in 1926 at the newly established Gölcük Naval Shipyard near (now ), supervised by engineers from Ateliers et Chantiers de la , lasting until 1930 and transforming the ship without full reconstruction. Hull streamlining reduced drag, increasing displacement to approximately 25,800 long tons; twelve Yarrow boilers replaced outdated units for improved steam efficiency and reliability; and a fire-control system was installed for the main 28 cm guns, enhancing accuracy despite the obsolescent platform. Two 15 cm casemate guns were removed to accommodate additional anti-aircraft batteries, including 8.8 cm SK L/45 guns patterned on designs, reflecting adaptations to emerging aerial threats while maintaining secondary armament punch. Recommissioned as in 1930 with the shortened name Yavuz, these upgrades extended operational viability into the , demonstrating the cost-effectiveness of incremental modernization on a resilient pre-dreadnought-era hull over acquiring new tonnage amid Turkey's economic limits. Further enhancements in , prompted by regional rearmament including Greek naval expansions, included minor overhauls in Turkish yards adding enhanced fire-control directors and, by the early , German-supplied systems such as FuMO 21 surface-search and FuMO 25 air-warning sets mounted on the foremast and mainmast. These integrations, though limited by the ship's age and power constraints, improved detection ranges to 20-30 km for surface targets, compensating for reduced speed (peaking at 26 knots post-refit) and enabling sustained roles. The Turkish Navy's persistence with Yavuz underscored empirical prioritization of proven durability—evident in minimal structural failures over decades—over theoretical obsolescence, allowing service until 1950 despite international pressures and technological shifts toward carriers and submarines.

Active Duty in Turkish Navy

Following the in 1923, which confirmed Turkish retention of Yavuz Sultan Selim despite Allied demands for its return or reparations, the battlecruiser assumed a central role as the of the emerging Turkish Navy, a position it held from 1914 until 1950. This status underscored its utility in projecting naval power amid post-war reconstruction, with the ship conducting routine patrols along the coasts to enforce neutrality and deter regional instability during the and subsequent border conflicts. Her operational tempo emphasized deterrence, particularly against Soviet naval buildup in the , where Yavuz's 28 cm main armament and speed—reaching 26.4 knots in 1930 trials—provided a credible counterbalance to Russian expansions that alarmed by the mid-1920s. In the Atatürk era (1923–1938), Yavuz symbolized naval modernization and national sovereignty, participating in training cruises that honed Turkish crews in gunnery, maneuvering, and fleet exercises primarily within the Black Sea, fostering interoperability with smaller destroyers and submarines acquired during the 1920s rearmament. These activities incurred minimal incidents, reflecting Turkey's strict neutrality policy amid Balkan tensions and Greco-Turkish rivalries, though readiness drills focused on potential Soviet incursions, as evidenced by Soviet diplomatic protests over Turkish fleet enhancements. The ship's sustained deployment without major overhauls beyond routine maintenance highlighted its robust design, enabling it to outpace contemporary threats despite its age. Crew composition evolved from predominantly German personnel—who initially operated the vessel under flags post-1914—to full Turkish manning by the late 1920s, with officers trained in naval academies preserving elements of Kaiserliche Marine tactical doctrines, such as aggressive scouting and rapid gun-line engagements adapted to Black Sea constraints. This transition ensured doctrinal continuity, emphasizing firepower concentration and evasion over fleet actions, which aligned with Turkey's defensive posture against numerically superior Soviet forces. By 1936, renamed TCG Yavuz, she embodied this hybrid legacy, serving as a floating command post for fleet exercises that bolstered regional deterrence without provoking escalation.

World War II and Decommissioning

Limited Role in World War II

Turkey maintained strict neutrality throughout most of , declaring war on only on 23 February 1945 to meet membership requirements, which constrained the operational role of Yavuz Sultan Selim (formerly SMS Goeben). As the Turkish Navy's flagship and sole , Yavuz remained largely inactive in major combat, stationed primarily at Gölcük and to uphold neutrality while serving as a deterrent in the Black Sea. During the war, Yavuz conducted limited patrols along Turkish coastal waters in the Black Sea, escorting convoys and demonstrating presence to counter potential threats from Soviet submarines, though no direct engagements with enemy vessels occurred. Soviet submarines, such as ShCh-214, sank Turkish merchant ships like the schooner Kaynakdere on 3 November 1941, heightening vigilance, but Yavuz's operations stayed within neutral bounds, avoiding fleet actions or offensive sorties. To address evolving aerial threats amid advances in the from 1941, Yavuz underwent anti-aircraft enhancements: in 1941, additions included four 88 mm guns, ten 40 mm guns, and four 20 mm guns, with further expansions by 1943 to 22 × 40 mm and 24 × 20 mm guns, alongside removal of the rear for stability. These modifications improved defensive capabilities without altering her primary armament of ten 28 cm guns, reflecting a focus on survivability over aggression. Strategically, Yavuz bolstered Turkey's position by deterring Soviet naval expansion in the , where the Soviet posed a potential risk to Turkish control of the straits; her presence echoed the ' influence from , ensuring Ankara's leverage in Axis-Turkish pacts like the 1941 Treaty of Friendship while preserving non-belligerence.

Final Years and Scrapping

Following her limited involvement in , TCG Yavuz served primarily in training and ceremonial roles within the Turkish Navy, but mounting maintenance costs and the obsolescence of her coal-fired propulsion system rendered her increasingly uneconomical by the late . She was decommissioned on 20 1950, after 36 years of service under both German and Turkish flags, marking the end of her active operational life. Efforts to preserve her as a emerged in the early 1960s, when Turkey offered to sell Yavuz back to for repatriation and display, but the proposal was rejected amid postwar aversion to German naval symbols and limited in such artifacts. Unable to fund ongoing upkeep amid Turkey's postwar economic constraints and NATO-aligned modernization priorities favoring newer vessels, the Turkish government pursued additional preservation bids through the , all of which failed due to insufficient funding and institutional disinterest. In 1971, Yavuz was sold for scrap, with demolition commencing in in 1973; she was the last surviving Moltke-class , her and main preserved as relics at the Turkish Naval Museum in . This outcome reflected broader postwar naval politics, where practical economic imperatives and alliance-driven fleet rationalization supplanted historical valuation, despite her pivotal role in reshaping early 20th-century alliances.

Strategic Significance and Legacy

Impact on World War I Alliances and Campaigns

The arrival of SMS Goeben (renamed Yavuz Sultan Selim) and SMS Breslau in on 10 August 1914, after evading British pursuit in the Mediterranean, materially strengthened German leverage over decision-making. Transferred to ownership on 16 August under a nominal sale agreement, these vessels provided the with its only modern capability, transforming a fleet previously reliant on obsolete pre-dreadnoughts into a force capable of challenging dominance in the Black . This infusion of naval power, aligned with the secret -German signed on 2 August, decisively inclined the government—previously divided between pro-Entente and pro-Central Powers factions—toward belligerence, as the ships symbolized and enabled a partnership that offset military vulnerabilities. On 29 October 1914, under German Vice-Admiral commanding the Ottoman fleet, Goeben led a raid bombarding Russian ports including (sinking merchant ships and damaging infrastructure) and (firing over 70 shells at the harbor), actions that provoked Russia's declaration of war on 2 November, with and following on 5 November. Ottoman entry closed the and straits to Allied shipping, blocking vital supply routes to and necessitating the Gallipoli Campaign's amphibious assaults from April 1915, which committed approximately 489,000 Allied troops and resulted in over 250,000 casualties while failing to breach Ottoman defenses fortified by the redirected naval threat posed by Goeben. By maintaining a credible deterrent against the Russian —despite its numerical superiority in pre-dreadnought battleships—Goeben's presence allowed Ottoman forces to prioritize land defenses at Gallipoli without fear of uncontested Russian amphibious support, thereby prolonging resource commitments on this secondary front. The ensuing Ottoman offensive in the , enabled by Black Sea naval cover from Goeben, diverted Russian resources: the failed Russian Sarikamish operation in December 1914–January 1915 incurred 60,000–90,000 casualties and required reallocating seven divisions (over 100,000 men) from other fronts, exacerbating supply shortages via disrupted commerce raiding by Ottoman-German forces. These strains compounded Russia's multi-theater burdens, hindering reinforcements for the Eastern Front and contributing to logistical breakdowns that undermined offensive preparations, such as those preceding the in June 1916, amid broader war exhaustion leading to the February and October Revolutions of 1917. The initial British failure to capture Goeben highlighted Mediterranean command gaps, fostering assumptions of unopposed naval coercion that informed Winston Churchill's February 1915 plan, which disregarded the enhanced Ottoman naval posture and resulted in the campaign's naval phase collapse on 18 after three battleships sunk by mines.

Engineering Achievements and Naval Innovations

The Moltke-class battlecruisers, including SMS Goeben, represented a refinement in naval , incorporating turrets for enhanced firepower concentration and a hull design with finer ends and increased freeboard for superior and at high speeds. These ships displaced 22,979 tons normally and mounted ten 28 cm SK L/50 guns in five twin turrets, an increase over the eight guns of the predecessor Von der Tann class, with a firing rate of up to three rounds per minute and ranges extended to over 20,000 yards post-refit. The armored citadel featured a 280 mm tapering to 76 mm, turret faces of 230 mm, and deck protection up to 76 mm, providing a more distributed and thicker scheme than contemporary Indefatigable-class battlecruisers, which had a maximum of only 152 mm. ![Moltke-class plan and profile drawing showing hull and turret layout][float-right] Propulsion innovations centered on four-shaft Parsons steam turbines driven by 24 coal-fired boilers, delivering up to 85,782 shaft horsepower on trials and achieving speeds of 28.4 knots, the fastest among early battlecruisers and enabling effective high-speed gunnery tactics. This turbine integration, licensed from designs but optimized for sustained output with fuel efficiencies around 0.7 kg per horsepower-hour, prioritized reliability and power density over the triple-expansion engines of older cruisers, influencing the shift toward all-turbine capital ships in subsequent and international designs. The balanced emphasis on speed, armament, and protection—contrasting prioritization of gun caliber and velocity—demonstrated engineering's focus on , as evidenced by the class's performance in gunnery duels despite doctrinal critiques post-Jutland. The inherent build quality, rooted in advanced metallurgy and compartmentalization, underpinned Goeben's exceptional 61-year service life from 1912 commissioning to 1973 scrapping, outlasting British peers like HMS Lion (scrapped 1929 after 17 years) through multiple refits that preserved structural integrity under wartime damage and interwar overhauls. This adaptability highlighted superior propulsion redundancy and material durability, allowing sustained operations in varied conditions, including Black Sea duties, and contributed to the evolution of battlecruiser doctrine toward 1930s fast battleships that integrated similar speed-armor balances.

Controversies in Command and International Law

The command decisions of Rear Admiral , who assumed control of SMS Goeben and SMS Breslau in the Mediterranean squadron in late 1913, sparked debate over operational autonomy versus adherence to directives from Berlin. Souchon's instructions from the German Admiralty emphasized demonstration cruises and potential support for , but upon Britain's declaration of war on August 4, 1914, he independently opted to steam eastward toward neutral Ottoman ports rather than engage British forces or seek internment in Austria. This maneuver, culminating in the ships' arrival at the on August 10 after evading pursuit, was rationalized by Souchon as a survival imperative amid fuel shortages and boiler issues on Goeben, yet it deviated from explicit orders to remain in western waters, prompting later scrutiny in German naval reviews for risking escalation without full coordination. Souchon's most contentious action occurred on October 29, 1914, when he exploited the nominal transfer of the ships to ownership—effected August 16—to launch an unauthorized bombardment of Black Sea ports at , , and , using Goeben (renamed Yavuz Sultan Selim) and Breslau (Midilli). Despite neutrality and internal cabinet opposition, including from , Souchon proceeded without a formal declaration, firing over 70 shells from Goeben's 28 cm guns and sinking transports while damaging infrastructure; this forced the hand, leading to Russia's ultimatum on October 30 and Allied declarations of by November 5. German accounts praised Souchon's initiative as decisive in securing alliance, aligning with prewar contingency plans, but and Allied observers criticized it as a unilateral provocation that overrode governmental caution and risked broader entanglement. Under , the accommodation of Goeben violated neutrality obligations codified in the 1907 Hague Convention V, which mandated or expulsion of warships, with coaling limited to 24 hours in neutral ports. The transfer, structured as a purchase for 80 million marks (with payment deferred indefinitely), retained crews under Souchon and was transparently a contrivance to evade , as confirmed by V's decree commissioning the ships while preserving operational control in hands; this drew protests from and , who viewed it as complicity in belligerency. The preemptive October 29 attacks, conducted under colors without declaration, compounded the breach by transforming neutral assets into instruments of aggression, justifying Allied claims of and underscoring the legal fictions employed to prioritize strategic imperatives over treaty compliance.

References

  1. [1]
    Moltke class Battlecruisers - Naval Encyclopedia
    Two battecruisers (Moltke and Goeben) with interesting carrers. Both saw active combat, the first at Jutland, while the second became the Turkish Yavuz.
  2. [2]
    SMS Goeben (Yavuz Sultan Selim) Battlecruiser Warship
    She was 615.78 feet (186.6m) long with a beam of 97 feet (30.33m) and drauft of 29.4 feet (9.19m). Her displacement was 22,979 tons as designed and 25,400 tons ...
  3. [3]
    Moltke Class battlecruisers
    SMS Goeben was sent to the Mediterranean in 1912 to protect German interests ... SMS Moltke had a rather more traditional career, serving with the ...
  4. [4]
    Goeben, SMS and Breslau, SMS - 1914-1918 Online
    Dec 3, 2019 · The Goeben and Breslau were German ships that escaped to Constantinople, were incorporated into the Ottoman Navy, and their presence was key to ...
  5. [5]
    "Goeben" and "Breslau" - December 1917 Vol. 43/12/178
    In May, 1914, the Goeben visited Constantinople for the second time and found a timely and profitable occasion for sending some 300 men ashore to extinguish one ...
  6. [6]
    https://www.turkeyswar.com/navy/turkish-warships/yavuz/
  7. [7]
    SMS Goeben Builder's Data - MaritimeQuest
    Aug. 16, 1914: Sold to Turkey and renamed TCG Yavuz Sultan Selim. (It appears this "sale" was in name only, ...
  8. [8]
    Moltke class Battlecruisers - Naval Encyclopedia
    Mar 26, 2020 · Moltke class specifications ; Dimensions, 186,5 x 29,5 x 9 m ; Displacement, 22,616 t, 25,300 t FL ; Crew, 1355 (43+1010) ; Propulsion, 4 screws, 4 ...
  9. [9]
    Big cruiser (battle cruiser) SMS Moltke - Militär Wissen
    Maximum speed: 28,4 kn (53 km/h) ; Armament: 10 × Rapid Fire Gun 28,0 cm L / 50 (810 rounds). 12 × Rapid Fire Gun 15,0 cm L / 45 (1.800 rounds). 12 × Rapid Fire ...
  10. [10]
    The Legendary Pursuit of the Goeben and Breslau
    Nov 17, 2017 · Despite the Goeben's formidable size and weaponry, the two-year-old ship was plagued by defective coal-fired boilers that leaked water, causing ...Missing: pre- efficiency
  11. [11]
    S.M.S. Goeben (1911) - The Dreadnought Project
    Nov 1, 2021 · Builder: Blohm & Voss, Hamburg ; Laid down: 28 Aug, 1909 ; Launched: 28 Mar, 1911 ; Commissioned: 2 Jul, 1912.
  12. [12]
    SMS Goeben
    SMS Goeben ; Broken up. 1971 ; Captains ; 1912-1914. Kapitän zur See Phillip ; 1914-1918. Kapitän zur See Richard Ackerman ; 1918. Kapitän zur See Stoelzel.Missing: officer | Show results with:officer<|separator|>
  13. [13]
    My Service on the Battle Cruiser Goeben - Order of the First World War
    Feb 2, 2012 · Upon the completion of my basic training I was assigned to the battle cruiser S.M.S. Goeben. I joined the Goeben at Kiel and we engaged in ...Missing: career shakedown
  14. [14]
    Mediterranean, Naval War, including Turkish Waters and Black Sea
    Late June found the "Goeben" undergoing a refit at Pola. To avoid the ... 24th February - French destroyer "DAGUE" (1912, 800t, 2-10cm, 4-45cm tt).
  15. [15]
    Balkan Wars 1912-1913 - 1914-1918 Online
    Oct 8, 2014 · The Balkan Wars of 1912-1913 initiated a period of conflict that ravaged southeastern Europe until 1918 and endured there in one form or another into the 21 st ...
  16. [16]
    Admiral Souchon's Escape (3-8 August 1914) - Naval Encyclopedia
    Jul 17, 2016 · The Goeben received meantime an urgent message by wireless telegraphy from Berlin for more: “Alliance concluded with Turkey, Join Constantinople ...Missing: Balkan | Show results with:Balkan
  17. [17]
    The Pursuit of the Goeben and Breslau - Naval Gazing
    Mar 30, 2018 · Goeben struck two mines on December 26th, which was only partially repaired during the war, due to the absence of drydocks that would fit her.Missing: Thessaloniki | Show results with:Thessaloniki
  18. [18]
    SMS Goeben and Breslau Escape to Constantinople August 1914
    Aug 13, 2014 · Goeben was armed with 11 inch guns compared with the 12 inch guns of the three British battlecruisers, HMS Inflexible, Indefatigable and ...
  19. [19]
    GUNS OF AUGUST 1914-2014 - “The Terrible 'Ifs' Accumulate”
    In a feat of seamanship even Churchill was forced to admire, the German battlecruiser Goeben eluded Royal Navy hunters and sailed to Constantinople, where she ...Missing: SMS directives
  20. [20]
    Goeben and the Naval War in the Black Sea. Part I of II
    Feb 8, 2020 · SMS Goeben. So, on the morning of 29 October 1914, Goeben (now officially renamed Yavuz Sultan Selim, but her crew and commander remaining ...
  21. [21]
    A souvenir from SMS Goeben or SMS Breslau - LAI Publications
    Dec 9, 2022 · They were commanded by Lieutenant Hellmuth von Mücke. He described their epic journey and spoke of the great help that the firepower of their ...
  22. [22]
    Turkish or Ottoman Navy, World War 1 - Naval-History.Net
    On the 29th October 1914, 'Goeben' and light cruiser 'Breslau' (see below) took part with Turkish forces in bombardments and raids on Russian Black Sea ports ...
  23. [23]
    Admiral Souchon's Frustrating War - Roads to the Great War
    Sep 16, 2021 · When war broke out his main ships, battlecruiser SMS Goeben and cruiser Breslau fired the first shots of the war at two of France's forts in ...
  24. [24]
    http://stefanov.no-ip.org/MagWeb/countera/4/ck04goe3.htm
  25. [25]
    Goeben and the Naval War in the Black Sea, Part II of II
    Feb 9, 2020 · The Russians had by mid-1915 achieved a commanding position in the war in the Black Sea. Dozens of Turkish steamers and hundreds of sailing ...Missing: engagements | Show results with:engagements
  26. [26]
    Battle of Imbros - The Dreadnought Project
    Oct 18, 2021 · S.M.S. Goeben and S.M.S. Breslau sailed at 4:00 pm on 19 January, accompanied by four Ottoman destroyers. They left the Dardanelles at 6:00 ...
  27. [27]
    Battle of Imbros (20 January 1918) - Naval Encyclopedia
    Oct 7, 2018 · The battle of Imbros, near the Dardanelles, saw the last major naval engagement of the war in the Mediterranean and an ealy naval air battle ...
  28. [28]
    Orders of Battle - Goeben's Raid on Troop Transports - World War I
    Jun 13, 2017 · Ex SMS Goeben. Struck mines at 0610 and 0948, deliberately run aground at 1148 off Nagara in the Dardanelles, attacked but only lightly damaged ...
  29. [29]
    Turkish Battlecruiser CGT Yavuz - Destination's Journey
    CGT Yavuz was a German Moltke -class battlecruiser launched in 1911 as SMS Goeben. Operating in the Mediterranean at the start of World War One.<|control11|><|separator|>
  30. [30]
    Turkish Battlecruiser Yavuz Sultan Selim (1914) - Naval Encyclopedia
    Aug 22, 2019 · Instead, the Geran government transferred the ship to the Turkish government officially on 2 November. She fell under the Treaty of Sèvres ...
  31. [31]
    Yavuz - Turkey in the First World War
    Feb 18, 2024 · The Ottoman warship Yavuz started its life as SMS Goeben, part of the Moltke-class battlecruisers of the Imperial German Navy. Commissioned in ...
  32. [32]
    Post-1914 Pre-Dreadnought and Armoured Cruiser Modernizations
    Jun 24, 2024 · The situation changed after Turkey proceeded with Yavuz repair & refit. The Hellenic Navy suddently found itself at significant disadvantage ...
  33. [33]
    LETTERS TO THE EDITOR - jstor
    equipped with radar. She mounted type 22 Surface Radar on the foremost and type 13. Aircraft Warning Radar on the main mast. Sources : S. Fukui - The ...
  34. [34]
    Türk Donanmasi: The Turkish Navy in the interwar and ww2
    Displacement: 710t, 940t surf./plong. ... Propulsion: 2 shafts MAN diesels, 1600/1100 hp. surf./sub. and 16.9/9.5 knots. ... Armament: 1 x 100 mm, 1 x 20 mm AA, 6 x ...
  35. [35]
    [PDF] First Phase in Navy Building: 1923-1930
    Interestingly, Ankara's most trusted partner, the Soviet Union, was concerned about the Black Sea naval balance after the Turkish naval modernization. Hence, ...Missing: deterrence | Show results with:deterrence
  36. [36]
    Cold War Turkish Navy - Naval Encyclopedia
    Turkey's flagship from 1914 to 1950, TCG Yavuz. The Navy of the founding father of the Nation, Kemal Atatürk, was born in the 1920s and was reinforced with many ...
  37. [37]
    The Yavuz - Chris's Naval History Substack
    May 23, 2025 · She returned to duties as Fleet flagship in 1930 smashing her new speed and gunnery trials and by 1932 four new destroyers were built to act as ...Missing: Wilhelmshaven refit
  38. [38]
    How "Goeben" Changed History, by Dalton Newfield
    Jan 10, 2023 · Goeben's actions almost stopped Churchill's career, sealed Turkey's alliance with Germany, and its passage led to the loss of the supply route ...
  39. [39]
    The Ottoman Empire in World War I: An Overview - TheCollector
    May 1, 2025 · On August 2, 1914, the Ottomans entered into an alliance with ... SMS Goeben, a German battlecruiser transferred to Turkish control in 1914.Missing: impact alliances
  40. [40]
    Ottoman Empire declares a holy war | November 14, 1914 | HISTORY
    On October 29, the Ottoman navy—including two German ships, Goeben and Breslau, which famously eluded the British navy in the first week of the war to reach ...
  41. [41]
    Ottoman Empire enters the First World War - NZ History
    Jul 30, 2014 · Although the Ottoman Empire was still ostensibly neutral at this point, Cemal then appointed German Vice-Admiral Guido von Usedom as 'Inspector- ...Missing: agreement | Show results with:agreement
  42. [42]
    The Man Who Let Goeben Escape - HistoryNet
    Oct 1, 2015 · The raid by nominally Turkish ships precipitated a declaration of war by Russia against the Ottoman empire on November 2, with Britain and ...
  43. [43]
    British and German Battlecruisers: Their Development and Operations
    Aug 1, 2018 · Whereas the British favored larger guns and speed, the Germans took a more balanced approach. Their early battlecruisers were better protected ...
  44. [44]
    Admiral Souchon - World War I Document Archive
    Sep 4, 2002 · Souchon's actions as commander of the Turkish fleet demonstrated cunning, ruthlessness, and political astuteness, whereby he successfully ...
  45. [45]
    Goeben and the Naval War in the Black Sea - WORLDWAR1.com
    The Russian gunnery had been excellent. On Goeben, 105 men were killed and 59 injured. The ship had come perilously close to even greater damage -- the fire ...
  46. [46]
    'Our Dear Reşadiye': The Legend and the Loans behind Ottoman ...
    Jun 22, 2021 · Unfortunately the Admiralty held that, in view of the Ottomans' violation of their neutrality (by admitting German warships to the Dardanelles ...