USN Ship Classes - WarShips, Service Craft

AB -

- Crane Ship. See also ACS.

ABD -

- Advance Base Dock.

ABSD -

- Advance Base Section Dock.

ACS -

- Auxiliary Crane Ship. These ships provide a mobile discharge facility for non-self sustaining container ships in ports without operational container discharge capability.

T-ACS Class:
Displacement	DWT: 17,501 (T-ACS 1); 17,449 (2); 17,448 (3); 16,445 (4); 16,343 (5); 16,445 (6); 19,871 (7, 8); 16,183 (9, 10); 19,272 (11); TBD (12) Deadweight for T-ACS 7-11 is prior to conversion, post conversion figures are not yet available.
Dimensions	Length: 669' (T-ACS 1,2,3); 610' (4,5,6); 668' (7,8,11); 666' (9,10) Beam: 76' (T-ACS 1,2,3, 7, 11); 78' (4,5,6); 75' (8,9,10) Draft: ??
Machinery	Speed: 20 kts. (T-ACS 1,2,3,7,11); 21 kts. (T-ACS 4,5,6,9,10)
Complement	ship's company: 29 NAVCHAPGRU; civilian: 40
Builder(s)	Bay Shipbuilding in Sturgeon Bay, Wisconsin; T-ACS 1 Dillingham Ship Repair of Portland, Oregon; T-ACSs 2-3 Norshipco in Norfolk, Virginia; T-ACSs 4-6, 9-10 Tampa Ship of Tampa, Florida; T-ACSs 7-8 Contracts for T-ACS 11,12 have not yet been awarded.
Notes	These ships incorporate a unique capability stemming from the need to be able to offload containers and other heavy equipment from non-self-sustaining containerships in areas where port facilities are damaged, inadequate or non-existent. T-ACS has four or six cranes arranged in pairs, all on the starboard side. Each crane can lift a 20-foot or a 40-foot container, each pair can lift an M-60 battle tank, and four working together can lift a 105 ton Side Loadable Warping Tug (SLWT). These ships will be maintained in a high state of readiness within the Ready Reserve Force. T-ACS Class Ships (10) in service: SS Keystone State (T-ACS 1) SS Equality State (T-ACS 8)

AFD -

- Floating Dock (Auxiliary).

AFDB -

- Floating Dry Dock (large auxiliary nsp.)

AFDL -

- Floating Dry Dock (small auxiliary nsp.)

AFDM -

- Floating Dry Dock (medium auxiliary nsp.)

AN -

- Net Laying Ship (now ANL).

ANL -

- Net Laying Ship (formerly AN).

APB -

- Barracks Ship (sp.); or Artillery Barge.

APb -

- Base Repair Ship.

APL -

- Barracks Craft (nsp.).

APM -

- Transport - mechanized artillery.

APN -

- Transport - nonmechanized artillery.

APP -

- Troop Barge, class A.

APT -

- Troop Barge, class B.

APY -

- giant "Y" Boat.

ARD -

- Floating Dry Dock (nsp.).

ARDC -

- Repair Dock (auxiliary, concrete).

ARDM -

- Repair Dry Dock (medium auxiliary nsp.).

AVB -

- Advance Aviation Base Ship.

AVC -

- large catapult Lighter.

Bg -

- Barge.

ClBt -

- Canal Boat.

Gond -

- Gondola.

Lht. -

- Lighthouse Tender.

LT -

- large Tug (Army).

LWT -

- Amphibious Warping Tug.

MB -

- Motor Boat

ScTug -

- Screw Tug.

StwStr -

- Stern Wheel Steamer.

Syd -

- Shipyard.

SwTug -

- Side Wheel Tug.

YA -

- Ash Lighter.

YAG -

- miscellaneous auxiliary (service Craft).

YAGR -

- Ocean Radar Station Ship.

YC -

- open Lighter (nsp,).

YCD -

- fueling Barge.

YCF -

- car Float (nsp.).

YCK -

- open cargo Lighter.

YCV -

- aircraft transportation Lighter (nsp.).

Yd -

- Yard (Navy).

YD -

- Floating Derrick/Crane (nsp.).

YDG -

- District Degaussing Vessel.

YDT -

- Diving Tender (nsp.).

YE -

- Ammunition Lighter.

YF -

- covered Lighter (sp.), or freight Lighter.

YFB -

- ferryboat or launch (sp.).

YFD -

- yard Floating Dry Dock (nsp.).

YFN -

- covered Lighter (nsp.).

YFNB -

- large covered Lighter (nsp.).

YFND -

- dry dock companion Craft (nsp.).

YFNG -

- covered Lighter (special purpose) (later YFNX).

YFNX -

- Lighter (special purpose (nsp.) (formerly YFNG).

YFP -

- floating power Barge (nsp.).

YFR -

- refrigerated covered Lighter (sp.).

YFRN -

- refrigerated covered Lighter (nsp.).

YFRT -

- covered Lighter (range tender).

YFT -

- torpedo transportation Lighter.

YFU -

- harbor utility Craft (sp.).

YG -

- garbage Lighter (sp.).

YGN -

- garbage Lighter (nsp.).

YH -

- ambulance Boat.

YHB -

- house Boat.

YHLC -

- salvage lift Craft, heavy (nsp.).

YHT -

- Scow, heating.

YLA -

- open Landing Lighter.

YLLC -

- salvage lift Craft, light (sp.).

YM -

- Dredge (sp.).

YMLC -

- salvage lift Craft, medium (nsp.).

YMP -

- motor Mineplanter.

YMS -

- auxiliary motor Minesweeper.

YMT -

- motor Tug.

YN -

- Net Tender (boom).

YNG -

- Gate Craft (nsp.).

YNT -

- district Net Tender.

YO -

- fuel oil Barge (sp.).

YOG -

- Gasoline Barge (sp.).

YOGN -

- gasoline Barge (nsp.).

YON -

- fuel oil Barge (nsp.).

YOS -

- oil storage Barge (nsp.).

YP -

- Patrol Craft (sp.).

YPD -

- Pile Driver (Floating, nsp.).

YPK -

- pontoon stowage Barge.

YR -

- Floating Workshop (nsp.).

YRB -

- repair and berthing Barge (nsp.).

YRBM -

- repair, berthing, and messing Barge (nsp.).

YRBM (L) -

- Submarine repair, berthing, and messing Barge (large).

YRC -

- Submarine Rescue Chamber.

YRDH -

- floating dry dock workshop (hull) (nsp.).

YRDM -

- floating dry dock workshop (machine) (nsp.).

YRL -

- covered Lighter (repair).

YRR -

- radiological repair Barge (nsp.).

YRST -

- Salvage Craft Tender (nsp.).

YS -

- stevedoring Barge.

YSD -

- seaplane wrecking Derrick (sp.).

YSR -

- sludge removal Barge (nsp,).

YSP -

- stowage Pontoon.

YT -

- Harbor Tug.

YTB -

- Harbour Tug (Big).

YTL -

- Harbour Tug (Little).

YTM -

- Harbour Tug (Medium).

YTT -

- torpedo testing Barge.

YV -

- drone aircraft catapult control Craft (sp.); or seaplane Barge.

YVC -

- catapult Lighter.

YW -

- Water Barge (sp.).

YWN -

- Water Barge (nsp.).