List of currently active United States military watercraft

The United States military has numerous types of watercraft, operated by the Navy, including Naval Special Warfare Command and Military Sealift Command, as well as the Coast Guard, Army and Air Force

Aircraft carriers

 * Nimitz-class aircraft carrier – 10 active
 * Gerald R. Ford-class aircraft carrier – 1 active

Amphibious assault ships

 * Wasp-class amphibious assault ship – 7 active
 * America-class amphibious assault ship – 2 active

Amphibious command ships

 * Blue Ridge-class command ship – 2 active

Amphibious transport docks

 * San Antonio-class amphibious transport dock – 12 active

Attack submarines

 * Los Angeles-class submarine – 24 active
 * Seawolf-class submarine – 3 active
 * Virginia-class submarine – 22 active

Ballistic missile submarines

 * Ohio-class submarine – 14 active

Classic frigate

 * USS Constitution – oldest commissioned ship in USN, an 'Original Six' frigate, circa. 1797. Not counted as part of the deployed combat fleet.

Cruisers

 * Ticonderoga-class cruiser – 13 active

Destroyers

 * Arleigh Burke-class destroyer – 73 active
 * Zumwalt-class destroyer – 2 active

Dock landing ships

 * Whidbey Island-class dock landing ship – 6 active
 * Harpers Ferry-class dock landing ship – 4 active

Expeditionary mobile base

 * (sub-variant of the expeditionary transfer dock)
 * Montford Point-class expeditionary transfer dock
 * USS Lewis B. Puller (ESB-3)
 * USS USS Hershel "Woody" Williams (ESB-4)

Guided missile submarines

 * Ohio-class submarine – 4 active

Littoral combat ships

 * Freedom-class littoral combat ship – 8 active
 * Independence-class littoral combat ship – 15 active

Mine countermeasures ships

 * Avenger-class mine countermeasures ship – 8 active

Submarine tenders

 * Emory S. Land-class submarine tender – 2 active

Technical research ship

 * USS Pueblo (AGER-2) – currently held captive by North Korea. Still in commission, but not counted as part of the deployed combat fleet.

Non-commissioned ships (MSC)
(List includes "Support" and "Ready Reserve Force" ships)

Cable repair ships

 * Zeus-class cable ship – 1 active

Cargo and replenishment ships

 * Watson-class vehicle cargo ship – 8 active
 * Bob Hope-class vehicle cargo ship – 7 active
 * Shughart-class vehicle cargo ship – 3 active
 * Gordon-class vehicle cargo ship – 2 active
 * Supply-class fast combat support ship – 2 active
 * Lewis and Clark-class dry cargo ship – 14 active
 * Henry J. Kaiser-class replenishment oiler – 15 active

Crane ships

 * Gopher State-class crane ship – 3 active
 * Keystone State-class crane ship – 3 active

Expeditionary transfer dock

 * Montford Point-class mobile landing platform
 * Expeditionary Transfer Dock (ESD) – 2 active
 * Expeditionary Mobile Base (ESB) – 3 active (2 commissioned)

High speed vessels

 * Spearhead-class expeditionary fast transport – 9 active
 * Stand-alone vessels;
 * Sea Fighter (FSF-1) – active
 * USNS Guam (HST-1) – active
 * HST-2 (unnamed) – leased to civilian ferry service

Hospital ships

 * Mercy-class hospital ship – 2 active

Landing craft

 * Landing Craft Air Cushion – 74 active
 * Landing Craft Utility 1610, 1627 and 1646 – 32 active

Salvage ships

 * Safeguard-class salvage ship – 2 active

Surveillance, intelligence and survey vessels

 * Howard O. Lorenzen-class instrumentation ship – 1 active
 * Impeccable-class ocean surveillance ship – 1 active
 * Pathfinder-class survey ship – 6 active
 * Stalwart-class ocean surveillance ship – 2 active
 * Victorious-class ocean surveillance ship – 4 active

Tug boats

 * Powhatan-class fleet ocean tug – 4 active
 * Natick-class large harbor tug – 8 active
 * Valiant-class harbor tug – 6 active

Surface craft

 * Combat Rubber Raiding Craft
 * Small unit riverine craft
 * Riverine Command Boat
 * Rigid Raider
 * Mark V Special Operations Craft
 * Special Operations Craft - Riverine (SOC-R)
 * Mark VI Patrol Boat
 * Coastal Command Boat (CCB)
 * Combatant Craft Assault (CCA)
 * Combatant Craft Medium (CCM)
 * Combatant Craft Heavy (CCH)

Swimmer delivery vehicles

 * Swimmer Delivery Vehicle (Mk 8)
 * Surface-Planing Wet Submersible

Patrol ships

 * Legend-class National Security Cutter, Large 8
 * USCGC Alex Haley (WMEC-39)
 * Famous-class Medium Endurance Cutter 13
 * Reliance-class Medium Endurance Cutter 14
 * Sentinel-class cutter 38

Patrol boats

 * Island-class patrol boat 30
 * Marine Protector-class coastal patrol boat 73
 * 47-foot Motor Lifeboat 117
 * Response boat-medium 48
 * USCG Utility Boat 156
 * USCG Long Range Interceptor 10
 * Defender class Response boat-small 300
 * USCG transportable port security boat
 * Over the horizon boat
 * Short Range Prosecutor 10

Icebreakers

 * Bay-class icebreaking tug 9 active
 * Polar-class icebreaker 1 active
 * Stand-alone vessels;
 * USCGC Mackinaw (WLBB-30)
 * USCGC Healy (WAGB-20)

Tenders

 * USCG seagoing buoy tender
 * USCG coastal buoy tender
 * USCG inland buoy tender
 * USCG inland construction tender

Logistics support vessel

 * General Frank S. Besson-class logistics support vessel – 8

Landing craft

 * Runnymede class large landing craft – 35
 * Landing Craft Mechanized
 * LCM-8, Mod 1 - 34
 * LCM-8, Mod 2 - 6

Tug boats

 * MGen. Nathanael Greene-class tugboat – 6

Tug boats

 * Rising Star tugboat (Thule AFB harbor)

Recovery craft

 * 82nd ATRS drone recovery watercraft (x3 120 ft recovery vessels, x2 smaller boats)