USS Archerfish (SS-311) Statistics 2026 | SS-311 Facts

USS Archerfish in America 2026

USS Archerfish (SS/AGSS-311) holds a place in American naval history that is almost without parallel among the thousands of warships the United States has ever sent to sea — she is the submarine that accomplished what no other submarine, in any navy, in any war, has ever done before or since: she sank the largest warship ever sent to the bottom by a single submarine. A Balao-class diesel-electric submarine built at the Portsmouth Naval Shipyard in Kittery, Maine, Archerfish was commissioned on 4 September 1943 and served across three distinct commissioned eras spanning a total of 25 years, from the depths of World War II through the Cold War and into an entirely different chapter as a scientific research vessel. She was the first U.S. Navy ship ever named for the archerfish — a small, remarkable tropical fish found between India and Australia, capable of spitting a pressurized jet of water to knock prey from overhanging branches — a name whose hunting precision proved hauntingly appropriate for what this submarine would accomplish in the dark waters off Tokyo Bay on 28–29 November 1944. Her final status as of 2026 is one of solemn historical record: struck from the Naval Vessel Register on 1 May 1968 and sunk as a torpedo target off San Diego on 17 October 1968 by the submarine USS Snook (SSN-592) — ending the career of one of the most consequential warships America has ever built by sending her to the same element in which she had made history.

In 2026, the legacy of USS Archerfish (SS-311) resonates more forcefully than ever in the context of modern undersea warfare. The single tactical engagement that defines her — a six-and-a-half-hour surface pursuit in the dead of night, followed by a six-torpedo salvo that sent the 72,000-ton Japanese aircraft carrier Shinano to the bottom just 10 days after the carrier’s commissioning — remains the gold standard demonstration of what a well-commanded submarine can accomplish against a target that appears impossibly outmatched. Shinano was not just any warship: she was originally the third hull of the Yamato-class battleships, converted into the largest aircraft carrier ever built up to that time, displacing more than 72,000 long tons at full load. She was escorted by three destroyers and a submarine chaser. Against all of this, a single 1,526-ton submarine with one commander, one crew, and six well-aimed torpedoes ended the most powerful aircraft carrier Japan had ever put to sea — in a single night. For this extraordinary act of seamanship and courage, Archerfish was awarded the Presidential Unit Citation, and her commanding officer, Commander Joseph F. Enright, received the Navy Cross. The record she set — largest warship ever sunk by a submarine — has stood for 81 years as of 2026, and shows no signs of ever being broken.

Interesting Facts About USS Archerfish (SS-311)

Source: Naval History and Heritage Command (NHHC) — DANFS entry for Archerfish (SS-311); Wikipedia — USS Archerfish (SS-311), verified 2026; ussarcherfish.com — “History of the USS ARCHERFISH (SS/AGSS-311)” by G.L. Cornelison; NavSource Naval History — Archerfish photo and record index; Arkansas Inland Maritime Museum at North Little Rock — USS Archerfish (SS-311) record

The facts surrounding USS Archerfish are so extraordinary that they almost resist belief — which is precisely why they need to be stated plainly. Consider what actually happened on the night of 28 November 1944: Commander Joseph F. Enright, commanding a submarine that had endured four largely fruitless patrols without a confirmed kill, spotted what his lookouts thought was a tanker leaving Tokyo Bay. He ordered a surface pursuit that lasted six and a half hours. He was hunting, completely alone, a target escorted by three destroyers, each capable of depth-charging his submarine into oblivion. At close range he submerged and fired six torpedoes set deliberately shallow at 10 feet — a calculated bet that shallower running would maximize hull damage. Four struck home. The breaking-up noises of a dying ship were audible aboard Archerfish for 47 minutes. What Enright did not know — what no American knew until after the war — was that the ship he had just sent to the bottom was Shinano: the largest aircraft carrier ever built, originally designed as a Yamato-class battleship carrying nine 18.1-inch guns, now converted into a 72,000-ton supercarrier that had been in commission for exactly ten days. The Office of Naval Intelligence initially credited Archerfish with sinking a cruiser. They simply couldn’t believe it was a carrier. The full truth only emerged when American forces accessed Japanese naval records after the surrender.

What adds another layer of historical significance to Archerfish’s story is that she was also present at the formal Japanese surrender ceremony on 2 September 1945 — one of only 12 submarines that entered Tokyo Bay on 31 August 1945 and moored alongside tender USS Proteus (AS-19) near the Yokosuka Navy Yard. The same vessel that had dealt one of the most devastating single blows to Japanese naval power was there to witness Japan’s formal capitulation to the Allies on the deck of USS Missouri. Few American warships can claim to have played a role at both the dramatic height of a war and at its ceremonial end. And almost uniquely, Archerfish also later appeared on the silver screen: in the 1959 Cary Grant film “Operation Petticoat”, the submarine played the fictional USS Sea Tiger for underwater and distance shooting — her final Hollywood turn before her scientific career began.

USS Archerfish (SS-311) Physical & Technical Specifications

Source: Wikipedia — USS Archerfish (SS-311), general characteristics; Naval History and Heritage Command (NHHC) — DANFS Balao (SS-285) specifications; ussarcherfish.com — official ship history record; Wikipedia — Balao-class submarine specifications

The technical specifications of USS Archerfish tell the story of one of the most capable weapons systems the United States produced in the entire Second World War. The defining engineering achievement of the Balao class over its predecessor, the Gato class, was a deceptively simple but enormously consequential upgrade: thicker, higher yield-strength steel in the pressure hull skins and frames, which pushed the test depth from 300 feet to 400 feet — a full 100 feet deeper than the Gatos could safely go. That extra depth margin was not merely a comfort factor; in combat, it was a lifesaving calculation. Every depth charge has a lethal radius and a lethal depth setting. The ability to dive 100 feet deeper than an enemy’s charges were set — or to evade into depth bands the pursuing destroyer’s crew had not anticipated — could mean the difference between survival and destruction. When Archerfish dove to 400 feet to avoid the destroyer counterattack after torpedoing Shinano, that extra depth margin was precisely what kept her alive while the enemy burned fuel searching for her above. The Fairbanks-Morse opposed-piston diesel engines that powered her on the surface were themselves an engineering achievement: more reliable and more powerful than many contemporary alternatives, they drove the boat at over 20 knots surfaced — fast enough to conduct extended surface pursuits of targets and outrun many escort vessels in the right sea conditions.

The patrol endurance of 75 days — combined with a surface range of 11,000 nautical miles at 10 knots — gave USS Archerfish a reach that astonished Japanese planners who had underestimated American submarines’ ability to operate deep inside Japanese home waters. The ability to make a combat patrol from Pearl Harbor all the way to the waters off Tokyo Bay and back, remaining on station for weeks, was something German U-boats of the same era operating in the Atlantic simply could not replicate at those distances. Two independent propulsion modes — diesel-electric on the surface for power and range, battery-electric submerged for stealth — gave submarine commanders tactical flexibility that surface warships entirely lacked. In Archerfish’s case, this meant she could chase Shinano on the surface at full diesel power for six and a half hours, then switch seamlessly to electric motors for the quiet, precise submerged attack that proved decisive.

USS Archerfish (SS-311) Crew & Complement Statistics

Source: Wikipedia — USS Archerfish (SS-311); ussarcherfish.com — commanding officers and full history; NHHC DANFS — Archerfish (SS-311); NavSource — USS Archerfish photo index and record; Wikipedia — Balao-class submarine crew arrangements

The 80-man crew of USS Archerfish operated one of the most psychologically demanding combat environments imaginable — a 312-foot steel tube, submerged in hostile waters for weeks at a time, entirely dependent on each other’s competence for survival. The Balao class was deliberately designed with crew habitability improvements over earlier submarine designs: better berthing arrangements, improved ventilation, and refrigeration for food storage that made 75-day patrols physically sustainable in ways earlier boats could not manage. But no amount of design improvement could fully remove the fundamental reality of wartime submarine service: the crew of USS Archerfish knew, on every patrol, that a single depth charge or a single torpedo could end every one of their lives within seconds. The psychological weight of that reality, multiplied across the six-and-a-half-hour surface chase of Shinano — knowing that any one of those three destroyers could have turned and charged at them, knowing that a single radar contact could have brought down a full escort attack — makes the conduct of Enright and his crew during the 5th war patrol one of the most remarkable demonstrations of professional nerve in American military history.

The post-war career of Archerfish’s crew across her three commissioned eras introduced an entirely different kind of challenge. By the Operation Sea Scan era beginning in 1960, the boat that had hunted the largest carrier in Japan’s fleet was now carrying civilian scientists on oceanographic surveys across the Atlantic and Pacific, cataloging marine weather conditions, water temperatures, ocean depths, and water composition in service of peaceful scientific knowledge. The contrast between the wartime and postwar crew experiences aboard the same hull is stark enough to have inspired the book “Gallant Lady: A Biography of the USS Archerfish” (2006) by Don Keith and Ken Henry — which traces exactly that arc, from combat hunter to scientific platform. The 1959 buoyant ascent experiment conducted aboard Archerfish by CDR George F. Bond and Chief Engineman Cyril Tuckfield — in which both men ascended 302 feet from a submerged Archerfish in just 52 seconds — was itself a landmark contribution to submarine escape science that saved lives in subsequent decades, earning both men the Legion of Merit.

USS Archerfish (SS-311) Armament & Weapons Statistics

Source: Wikipedia — USS Archerfish (SS-311) general characteristics and Shinano engagement narrative; NHHC DANFS — Archerfish (SS-311); Submarine Force Library & Museum Association — “The Sinking of the Imperial Japanese Supercarrier Shinano by USS Archerfish”; Wikipedia — Balao-class submarine armament specifications

The armament of USS Archerfish reflects the fundamental design philosophy of the American fleet submarine of World War II: overwhelming torpedo capacity at range, supported by modest deck guns for surface engagements against lightly armed merchant vessels or small combatants. The 10-tube, 24-torpedo configuration — six tubes firing forward, four firing aft — gave Archerfish a striking capacity that could engage targets from either end of the boat, allowing for attack approaches from multiple angles without the need to fully reverse course. The Mark 10 Torpedo Data Computer was the computational heart of the attack setup: a mechanical analog computer that continuously calculated the solution needed to put a torpedo on a moving target, accounting for the submarine’s own course and speed, the target’s bearing, range, and estimated speed, and the torpedo’s running speed and gyro angle. It was, by the standards of 1943–1945, a remarkably sophisticated targeting system — and Commander Enright used it to lethal effect against Shinano.

The deliberate decision to set the torpedoes for 10-foot shallow running during the Shinano attack reflects a level of tactical sophistication that deserves its own recognition. Enright knew that deep-running torpedoes were a documented problem with American Mark 14 torpedoes earlier in the war — a defect that had cost American submariners countless kills. By setting his weapons shallow, he both countered any possible deep-running tendency and aimed to punch holes high on the hull, above the armored belt and into the less-protected areas of the carrier’s side. The gamble paid off catastrophically for the Japanese. Four torpedo hits struck Shinano between the anti-torpedo bulge and the waterline, flooding rushed through compartments whose watertight doors had been left carelessly open by an inexperienced crew on only their 10th day as a commissioned ship. The Balao-class submarine’s Bofors 40mm and Oerlikon 20mm anti-aircraft guns were also a significant upgrade over earlier boats, reflecting the growing threat from Japanese land-based aircraft as American submarines penetrated closer to the Japanese home islands during 1944 and 1945.

USS Archerfish (SS-311) World War II War Patrol Record Statistics

Source: Naval History and Heritage Command (NHHC) — DANFS entry, Archerfish (SS-311); Wikipedia — USS Archerfish (SS-311) — full war patrol narrative; World War II Database (ww2db.com) — Archerfish patrol logs; ussarcherfish.com — “History of USS ARCHERFISH 1943 to 1968”

The seven war patrols of USS Archerfish form a narrative arc that is both humbling in its early difficulties and then electrifying in its fifth-patrol climax. The first four patrols — collectively representing more than 150 days at sea in enemy-controlled waters — yielded no confirmed sinkings. This was not unusual in the war of American Pacific submarines; many fine boats and crews went multiple patrols without kills. But it shaped the context in which the 5th patrol’s achievement must be understood. Commander Joseph F. Enright himself had previously asked to be relieved of command of another submarine because he felt he lacked confidence after a fruitless first patrol — and had spent nearly a year on shore duty before accepting command of Archerfish. The man who would execute the most consequential single submarine attack of the entire war came to it after what he himself had experienced as failure. This human dimension of the Archerfish story — a commander who doubted himself, taking command of a submarine that hadn’t sunk anything in four tries, then sinking the largest warship ever sent to the bottom by a submarine — is one of the most compelling in all of American naval history.

The 7th and final war patrol provides a quietly poignant bookend to the combat record. Archerfish was off the coast of Hokkaidō, Japan, providing lifeguard services for B-29 Superfortress bombers striking the Japanese home islands, when word came on 15 August 1945 that Japan had capitulated. The same boat that had struck one of the most devastating single blows against Japanese naval power was in position off the Japanese home islands when the war ended. She then made the 14-day transit to Tokyo Bay, where she moored alongside tender USS Proteus (AS-19) near Yokosuka — and was present as one of 12 submarines when Japan formally surrendered on 2 September 1945 aboard USS Missouri. It would be impossible to script a more complete arc for a warship: from the killing fields off Tokyo Bay in November 1944 to the surrender ceremony in the same bay in September 1945, USS Archerfish witnessed both the violence of the Pacific War and its formal end.

USS Archerfish (SS-311) Post-War & Scientific Career Statistics

Source: Wikipedia — USS Archerfish (SS-311) — full post-war career; NHHC DANFS — Archerfish (SS-311); ussarcherfish.com — “History of USS ARCHERFISH 1943 to 1968”; Arkansas Inland Maritime Museum — USS Archerfish (SS-311) historical record

The post-war life of USS Archerfish is in some ways as remarkable as her wartime service, though in a completely different register. The fact that the Navy chose to recommission her twice after her first decommissioning — once in 1952 during the Korean War, and again in 1957 — reflects both the continuing utility of Balao-class boats in Cold War service roles and the institutional reluctance to retire a submarine with her history. The 1959 Operation Petticoat appearance gave Archerfish a different kind of immortality, appearing on cinema screens across America as the fictional USS Sea Tiger in a Cary Grant comedy — a surreal chapter for a vessel that had been, 15 years earlier, one of the most lethal warships in the Pacific. But the most genuinely important post-war chapter was Operation Sea Scan, the multi-year oceanographic survey mission that redesignated her AGSS-311 and sent her — carrying teams of civilian scientists — on some of the most extensive ocean survey voyages ever conducted by a U.S. Navy vessel up to that point.

The Operation Sea Scan cruises between 1960 and 1965 covered an extraordinary geographic sweep: from the High Arctic at Thule, Greenland to Fremantle, Australia; from Bergen, Norway to Auckland, New Zealand; from the South China Sea to the eastern Pacific. The civilian scientific teams aboard mapped marine weather conditions, water temperatures, ocean depths, and water composition across both hemispheres — contributions to oceanographic knowledge that outlasted the vessel herself. Then, in early 1968, the decision came: unfit for further naval service. Struck on 1 May 1968. Towed to a target position off California. And on 17 October 1968, the submarine USS Snook (SSN-592) — a nuclear-powered boat representing the next generation of undersea warfare — sent Archerfish to the bottom with a single torpedo. There is something almost theatrical about a submarine’s end coming by torpedo — the same weapon that had defined her life and her legend.

USS Archerfish (SS-311) — Class & Historical Context Statistics

Source: Wikipedia — Balao-class submarine; Wikipedia — USS Archerfish (SS-311); Wikipedia — Japanese aircraft carrier Shinano; NHHC DANFS — Archerfish (SS-311); NavSource — Archerfish record index; ussarcherfish.com — Presidential Unit Citation text; Submarine Force Library & Museum Association — Shinano sinking account

The Balao-class submarine program — of which USS Archerfish was the 27th hull — represents the apex of American conventional submarine design in the World War II era, and its legacy is inseparable from the Pacific campaign’s outcome. 120 submarines completed made it the largest submarine class in U.S. Navy history, and those 120 boats, operating across the vast Pacific, strangled Japan’s seaborne supply lines with a ruthlessness that Japanese naval strategists had catastrophically underestimated. The Balao’s critical depth improvement — test depth extended to 400 feet through stronger steel — was the engineering foundation that made that operational tempo survivable. Without it, the depth-charge attacks that routinely pursued American submarines into the Pacific deep would have destroyed far more of them. In the specific case of Archerfish’s Shinano attack, that 400-foot test depth was the margin of survival: the 14 depth charges the Japanese destroyers dropped found nothing, because Enright had already taken his boat to depths where the settings were ineffective. The 30-yard closest detonation was terrifying but not fatal — thanks to the Balao’s stronger hull.

Looking at USS Archerfish from the perspective of 2026 — 81 years after the Shinano sinking — what stands out is not just the tactical brilliance of the attack, but the permanent, irreversible nature of the historical record it created. The largest warship ever sunk by a submarine remains, in 2026, exactly what it was in 1944: a 72,000-ton aircraft carrier sent to the bottom in a single night by a 1,526-ton submarine and a crew of 80 men. No surface navy has subsequently built anything of comparable tonnage that a submarine has sent to the bottom. No submarine has matched or exceeded this mark across the Korean War, the Cold War, the Falklands War, or any subsequent conflict involving undersea warfare. The record belongs, permanently and completely, to USS Archerfish (SS-311), her crew, and her commander — Joseph F. Enright — the officer who doubted himself, took command of a boat that hadn’t scored a kill in four patrols, and then made naval history on a single November night off the coast of Japan.

Disclaimer: This research report is compiled from publicly available sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty, express or implied, is given as to the completeness or reliability of the information. We accept no liability for any errors, omissions, losses, or damages of any kind arising from the use of this report.

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