U.S. Navy

Tenders

Every warship that stays on station past its planned maintenance cycle is borrowing time from a tender. Destroyer tenders, submarine tenders, seaplane tenders, repair ships — floating shipyards that turned remote anchorages into operational bases and kept the fleet fighting thousands of miles from home. The ships that fix the ships that fight the wars.

World War II - Floating Shipyards 1940 - 1945

Destroyer Tenders

Floating repair yards that could fix anything short of a drydocking. Dixie-class destroyer tenders carried machine shops, foundries, electrical shops, and spare parts sufficient to maintain an entire destroyer squadron at a forward anchorage thousands of miles from the nearest shipyard. During the Pacific War, tenders turned remote atolls into operational bases. A destroyer could come alongside, get battle damage repaired, weapons overhauled, and engines rebuilt, then steam back to the fight without ever returning to Pearl Harbor. Read more

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Submarine Tenders

Full Sub Support

Submarine tenders purpose-built to support fleet submarines at forward bases. Fulton-class ships could reload torpedoes, overhaul diesel engines, recharge batteries, repair periscopes, and replenish every consumable a submarine needed between war patrols. At Midway, Fremantle, Brisbane, and a dozen Pacific anchorages, submarine tenders turned harbors into submarine bases. The boats that sank the Japanese merchant fleet operated from tenders — not shipyards. Without them, the submarine campaign that strangled Japan couldn't have sustained its tempo. Read more

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Seaplane Tenders

Fuel + Ordnance

Before every island had an airfield, seaplanes operated from protected anchorages supported by seaplane tenders. Curtiss-class tenders carried aviation fuel, bombs, torpedoes, spare engines, and repair facilities for PBY Catalinas and other patrol seaplanes. USS Curtiss was damaged at Pearl Harbor when a crashing Japanese aircraft hit her. Seaplane tenders provided the maritime patrol coverage that found Japanese fleets, tracked submarines, and rescued downed aviators across the Pacific. Read more

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Vulcan & Hector-Class

Where tenders serviced specific ship types, repair ships fixed anything the fleet brought alongside. Vulcan-class and Hector-class ARs carried heavy machinery, cranes, welding equipment, and foundries capable of fabricating replacement parts from raw steel. At forward anchorages like Ulithi, Manus, and Eniwetok, repair ships patched torpedo holes, replaced gun barrels, and rebuilt superstructures on ships too damaged to fight but not damaged enough to send home. They turned anchorages into shipyards. Read more

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Cold War Forward Maintenance 1950 - 1991

Samuel Gompers-Class

Destroyer Tenders

Missile + Radar Repair

Cold War destroyer tenders designed for the guided missile age. Where WWII tenders fixed guns and diesel engines, Samuel Gompers-class ships could repair and test missile systems, radar, sonar, and the electronics that defined modern warships. They deployed forward to the Mediterranean, Western Pacific, and Indian Ocean, providing maintenance that kept destroyers and frigates on station months beyond their planned deployment cycles. Read more

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Yellowstone-Class

Last Navy Destroyer Tenders

Systems Capable

The final class of U.S. Navy destroyer tenders and the most capable mobile repair platforms ever built. Equipped to maintain Aegis combat systems, gas turbine engines, and every weapons and sensor system in the surface fleet. Four ships — Yellowstone, Acadia, Cape Cod, and Shenandoah — supported the fleet from the Persian Gulf to the Western Pacific. All four decommissioned between 1996 and 2004. The Navy decided shore-based maintenance and contractor support could replace forward-deployed tenders. The fleet has been arguing about that decision ever since. Read more

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Hunley & Simon Lake-Class

Nuclear Submarine Tenders

Purpose-built to support nuclear-powered submarines — Polaris ballistic missile boats and fast attack submarines that needed specialized maintenance impossible to perform at most ports. These tenders could handle nuclear reactor work, missile system maintenance, and the unique requirements of submarines that never surfaced for months. Stationed at Holy Loch (Scotland), Rota (Spain), and Guam — the forward staging points for the nuclear submarine force during the Cold War. Read more

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Emory S. Land-Class

Last Submarine Tenders

The last submarine tenders in U.S. Navy service and the last tenders of any type still operating. USS Emory S. Land and USS Frank Cable support submarine and surface ship maintenance in Guam, Diego Garcia, and throughout the Indo-Pacific. As of 2026, both ships are well past their intended service life, averaging over 45 years old. Their eventual decommissioning will end a support ship lineage that dates to the earliest days of the submarine force. No replacement class is funded. The Navy's last floating shipyards. Read more

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Specialized Tenders Various Eras

UNDERSEA CABLES

Cable Repair Ships

Undersea Cable Tenders

USNS Zeus T-ARC-7

Sound Surveillance

The least-discussed ships in the Navy — cable repair vessels that maintain the undersea surveillance networks and military communication cables that span the ocean floor. During the Cold War, these ships laid and maintained the SOSUS arrays that tracked Soviet submarines across the Atlantic and Pacific. Today, USNS Zeus maintains military fiber optic cables and sensor networks that the Navy doesn't discuss in public. The ships that tend the wires the fleet depends on but pretends don't exist. Read more

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ARS-50 - ARS-53

Safeguard-Class

Rescue and Salvage Ships

Towing + Diving

The fleet's damage control experts and towing specialists. Safeguard-class ships carry diving teams, heavy salvage gear, firefighting equipment, and ocean towing capability. When a ship runs aground, catches fire, or takes damage beyond its crew's ability to control — salvage ships respond. They've towed disabled warships, fought fires on burning vessels, and recovered classified equipment from the ocean floor. Four ships, always forward deployed, always the last call before a ship is lost. Read more

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100+

Tenders Built

AD/AS/AR

Ship Types

100+

Years of Support

Fix

the Fleet