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WHIDBEY ISLAND landing ship-docks (1985 - 1992)


Comstock 2002


No Name Yard No Builder Laid down Launched Comm Fate
LSD41 Whidbey Island 150 Lockheed, Seattle 4.8.1981 10.6.1983 9.2.1985 in service (2019)
LSD42 Germantown 151 Lockheed, Seattle 5.8.1982 29.6.1984 8.2.1986 in service (2019)
LSD43 Fort McHenry 152 Lockheed, Seattle 10.6.1983 1.2.1986 8.8.1987 in service (2019)
LSD44 Gunston Hall 2349 Avondale SY, New Orleans 26.5.1986 27.6.1987 22.4.1989 in service (2019)
LSD45 Comstock 2350 Avondale SY, New Orleans 27.10.1986 16.1.1988 3.2.1990 in service (2019)
LSD46 Tortuga 2351 Avondale SY, New Orleans 23.3.1987 15.9.1988 17.11.1990 in service (2019)
LSD47 Rushmore 2352 Avondale SY, New Orleans 9.11.1987 6.5.1989 1.6.1991 in service (2019)
LSD48 Ashland 2353 Avondale SY, New Orleans 4.4.1988 11.11.1989 9.5.1992 in service (2019)

Technical data

Displacement standard, t

11099 - 11590 light

Displacement full, t

15883 - 16568

Length, m

176.8 wl 185.8 oa

Breadth, m


Draught, m

6.25 hull

No of shafts



4 Colt-Pielstick 16PC2.5 V400 diesels

Power, h. p.


Max speed, kts


Fuel, t

diesel oil 2000

Endurance, nm(kts)



2 x 1 - 20/80 Mk 67, 2 x 6 - 20/76 Mk 15 Phalanx, 6 x 1 - 12.7/90, helicopter deck

Military load

4 LCAC or 3 LCU or 10 LCM(8) or 64 LVTP, 2 LCPL, 1 LCVP, 402 troops, vehicles

Electronic equipment

LSD41-44: SPS-67(v)1, SPS-49(v)1, SPS-64(v)9, 2x Mk 90 radars, SLQ-32(v)1 ECM suite, 4x Mk 36 SRBOC decoy RL, SLQ-25 Nixie torpedo decoy

LSD45-48: SPS-67(v)1, SPS-49(v)5, SPS-64(v)9, 2x Mk 90 radars, SLQ-32(v)1 ECM suite, 4x Mk 36 SRBOC decoy RL, SLQ-25 Nixie torpedo decoy


310 - 320

Standard scale images

<i>Whidbey Island </i>1990
Whidbey Island 1990
<i>Whidbey Island </i>2010
Whidbey Island 2010


<i>Comstock </i>2002
Comstock 2002

Project history

A new LSD41 class was proposed to replace the eight Thomastons, but the Carter Administration deferred construction until Congress voted $41m in long-lead items in FY80; the Administration then announced the construction of six ships in alternate years, beginning in FY81. LSD41 has an enlarged well deck, 134.1x15.2m, adapted to carry four air cushion landing craft (LCAC) or twenty-one conventional LCM (6) landing craft; by way of comparison, the LHD will carry only three LCAC. Docking well can be flooded to 1.8m fwd/3.0m aft, when ship takes 12860t of water ballast. Ships also have 64.6x25.3m flight deck for up to CH-53E-size helicopters but with no hangars. 90t of aviation fuel are carried. There is 1214m² of vehicle parking space and 149m³ hold for palletized cargo fwd of the docking well.

LSD41 was conceived as a near-repeat of Anchorage (LSD36) adapted to LCACs rather than LCMs. That required not only enlargement of the well deck, but also raising the helicopter deck to provide all-round ventilation for LCAC gas turbines. LSD 44-48 are further modified to incorporate collective protection against chemical or biological weapons.

LSD49 and beyond are a modified Whidbey Island design, officially called the LSD41 Cargo Variant. They were originally requested under the FY88 budget, then withdrawn due to late design changes, and then approved by Congress. The idea originated in an analysis of Marine amphibious assault requirements, which showed that more cargo space was needed, but not in the ratio to LCAC 'spots' implicit in the LSD41 design. LSD49 was conceived as a simple substitution of cargo volume for well deck volume (leaving space for two LCAC or ten LCM).

Plans called for a total of ten, beginning with LSD49 in FY88, LSD50 in FY90, then one per year after that. The 1992 budget stopped production at LSD51, but Congress included LSD52 in the FY92 programme.


1993-1999, all: + 2 x 21 RAM SAM (42 RIM-116), 2 x 1 - 25/75 Mk 38 Bushmaster

late 2000s, Whidbey Island, Germantown, Fort McHenry, Gunston Hall: - SPS-49(v)1 radar; + SPS-49(v)5 radar

2010s, mostly all: - SPS-64(v)9 radar; + SPS-73 radar, SLQ-49 decoy RL

Naval service

No significant events.