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NavSource Online: Amphibious Photo Archive

USS Somerset (LPD-25)

San Antonio Class Amphibious Transport Dock:
  • Laid down, 11 December 2009, at Northrop Grumman Ship Systems, Ingalls Operation, Avondale facility, LA.
  • Scheduled commissioning, 2012
    Specifications:
    Displacement 25,000 t.(fl)
    Length 684'
    Beam 105'
    Draft 23 ft.
    Speed 22 kts.
    Complement 33 Officers, 411 Enlisted
    Troop Accommodations 66 Officers, 625 Enlisted
    Flag Staff Accommodations 84
    Mission Systems
    Vehicles/Cargo (Net): Three Vehicle Decks (2323 sq m)
    Two Cargo/Ammo Magazines (708 cu m)
    Cargo Fuel, JP-5 (1190 cu m) , MOGAS (38 cu m)
    Two LCACs
    Medical
    Two Operating Rooms
    24 Person Hospital Ward
    100 Casualty Overflow Capacity:
    Aviation Facilities
    Hangar - "O" Level, Maintenance Facilities for; One CH-53E, or Two CH-46s, or One MV-22, or Three UH/AH-1s
    Landing - Two CH-53s, or Four AH/UH-1s, or Four CH-46s, or Two MV-22s, or One AV-8B Harrier:
    Main Propulsion
    4 - Medium Speed Turbocharged Marine Diesels
    2 - Shafts
    2 - Single Reversing Reduction Gears
    2 - Inboard Rotating (top) Fixed Pitch Propellers
    Electric Plant
    5 - 2500 KW Ship Service Marine Diesel Generators
    5 - Main Ship Service 60 Hz SWBS
    3 - Ship Service 400 Hz SWBS
    3 - 60 to 400 Hz solid State Frequency changers
    Zonal 60 Hz Power distribution system
    Advanced Degaussing System
    Auxiliaries
    7 - 700 KW Non-CFC Air conditioning Plants
    5 - 12000 GPD Reverse Osmosis Desalination Plants
    10 - 1000 GPM Navy Standard Firepumps
    2 - HP Air Compressors
    3 - LP Air Compressors
    3 - Deballast Air Compressors
    Navigation
    Digital Flux Gate Magnetic Compass
    AN/WSN-7(V)1 Inertial Navigation System
    AN/WQN-2 Doppler Sonar Velocity Log System
    AN/UQN-4A Sonar Sounding Set, Dead Reckoning System
    Navigation Telex System
    AN/SSN-6 NAVSSI
    Armament
    1 - MK 41, 16 Cell VLS, (Space & Weight)
    2 - MK 31 Mod 0 RAM Launchers
    2 - MK 46 Mod 1 30mm Machine Guns
    2 - MK 26 Mod 17 .50 Cal Machine Guns
    Command & Control
    AN/SPQ-12(V) Radar Display Dist. Distribution System
    MK 2 SSDS
    AN/USQ-119C(V)27 JMCIS
    AN/KSQ-1 Amphibious Assault Direction System
    MK 91, 2 Channel MFCS
    AN/USG-2 CEC
    Radar Systems
    AN/SPS-48E
    AN/SPQ-9B
    AN/SPS-73
    EW & Decoy Systems
    AN/SLQ-25A NIXIE
    AN/SLQ-32Q(V)2
    MK 36 SRBOC
    MK 53 / NULKA
    Click On Image
    For Full Size Image    		Size Image Description Source
    Somerset 568k Mary Jo Myers, Somerset (LPD-25) ship's sponsor, inscribes her initials onto a steel plate at the ship's keel authentication ceremony Dec. 11, 2009 at Northrop Grumman Shipbuilding's Avondale facility. Looking on are L-R: John Vatavuk, county commissioner, Somerset, Penn.; Gordon Felt, president, Families of Flight 93; and Lanford Bridges, Northrop Grumman welder, who later welded Mrs. Myers initials onto the plate that will become part of the ship.
    Photo courtesy of the Northrop Grumman Corporation.    		 Bill Gonyo
    Somerset 3805k PCU Somerset (LPD-25) on the builders ways at Northrop Grumman Ship Systems, Ingalls Operation, Avondale facility, LA., circa 2010.
    Photo courtesy of the Northrop Grumman Corporation.    		 Bill Gonyo
    Somerset 229k The Families of Flight 93, a group of family members of the passengers and crew who perished on United Flight 93 on September 11, 2001, visited Northrop Grumman Corporation Avondale Yard on January 15, 2011, to tour PCU Somerset (LPD 25), the ninth ship in the LPD 17 series of San Antonio-class amphibious transport dock ships being built by the company.
    Photo courtesy of the Northrop Grumman Corporation.    		 Bill Gonyo
    There is no DANFS history available for USS Somerset (LPD-25) at NavSource
    Crew Contact And Reunion Information
    U.S. Navy Memorial Foundation - Navy Log
    Additional Resources and Web Sites of Interest
    Navy Fact File - Amphibious Transport Dock - LPD
    Federation of American Scientists, Military Analysis Network, US Navy Ships
    Back To The Navsource Photo Archives Main Page Back To the Amphibious Ship Type Index Back To The Amphibious Transport Dock (LPD) Photo Index
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    This page is created and maintained by Gary P. Priolo
    All pages copyright NavSource Naval History
    Last Updated 4 March 2011