Acceptance Trials

The Navy’s future USS Omaha (LCS-12) successfully conducted its acceptance trials, May 12, after completing a series of graded in-port and underway demonstrations for the Navy’s Board of Inspection and Survey (INSURV).

An artist rendering of the littoral combat ship USS Omaha (LCS-12). LCS-12 is the fourth Navy vessel to bear the name (U.S. Navy photo illustration by Stan Bailey)
An artist rendering of the littoral combat ship USS Omaha (LCS-12). LCS-12 is the fourth Navy vessel to bear the name (U.S. Navy photo illustration by Stan Bailey)

Acceptance trials are the last significant milestone before delivery of the ship to the U.S. Navy. During the trial, the U.S. Navy conducted comprehensive tests of the USS Omaha (LCS-12) intended to demonstrate the performance of the propulsion plant, ship handling, and auxiliary systems. While underway, Omaha successfully performed launch and recovery operations of the 36-foot/11-meter Rigid-Hull Inflatable Boat (RHIB), completed surface and air self-defense detect-to-engage exercises, and demonstrated the ship’s maneuverability through high-speed steering, crash backs, and four-hour full power run.

«The Navy/industry trials team in Mobile has found their stride and, with stability in the serial production line, are bringing ships to trial with consistently improved performance at decreasing cost», said Captain Tom Anderson, LCS program manager. «Omaha will be an exceptional addition to the rapidly growing in-service fleet».

Following delivery, a post-delivery maintenance availability and crew training and familiarization exercises in Mobile, Alabama, Omaha will sail to California for commissioning. Omaha will be homeported in San Diego with sister ships USS Independence (LCS-2), USS Coronado (LCS-4), USS Jackson (LCS-6), USS Montgomery (LCS-8) and USS Gabrielle Giffords (LCS-10), which departed Mobile earlier this month.

Several more Independence-variant hulls are under construction at Austal USA in Mobile, Alabama. USS Manchester (LCS-14) is preparing for builders trial this summer, USS Tulsa (LCS-16) was christened and launched earlier this year, and USS Charleston (LCS-18) is scheduled to be christened and launched this fall. Other sister ships, including USS Cincinnati (LCS-20), USS Kansas City (LCS-22), USS Oakland (LCS-24) and USS Mobile (LCS-26), are in varying stages of construction.

The LCS (Littoral Combat Ship) class consists of two variants, the Freedom variant and the Independence variant, designed and built by two industry teams. The Freedom variant team is led by Lockheed Martin (for the odd-numbered hulls, e.g. LCS-1). The Independence variant team is led by Austal USA (for LCS-6 and the subsequent even-numbered hulls).

Each LCS will be outfitted with a mission package made up of mission modules containing warfighting systems and support equipment. A dedicated ship crew will combine with aviation assets to deploy manned and unmanned vehicles and sensors in support of mine countermeasures, anti-submarine warfare or surface warfare missions.


The Independence Variant of the LCS Class

Construction Hull and superstructure – aluminium alloy
Length overall 417 feet/127.1 m
Beam overall 103 feet/31.4 m
Hull draft (maximum) 14.8 feet/4.5 m
Complement Core Crew – 40
Mission crew – 36
Berthing 76 in a mix of single, double & quad berthing compartments
Maximum mission load 210 tonnes
Mission Bay Volume 118,403 feet3/11,000 m3
Mission packages Anti-Submarine Warfare (ASW)
Surface Warfare (SUW)
Mine Warfare (MIW)
Main engines 2 × GE LM2500
2 × MTU 20V 8000
Waterjets 4 × Wartsila steerable
Bow thruster Retractable azimuthing
Speed 40 knots/46 mph/74 km/h
Range 3,500 NM/4,028 miles/6,482 km
Operational limitation Survival in Sea State 8
Deck area >21,527.8 feet2/2,000 m2
Launch and recovery Twin boom extending crane
Loading Side ramp
Internal elevator to hanger
Launch/Recover Watercraft Sea State 4
Flight deck dimensions 2 × SH-60 or 1 × CH-53 or multiple Unmanned Aerial Vehicles/Vertical Take-off and Land Tactical Unmanned Air Vehicles (UAVs/VTUAVs)
Hanger Aircraft stowage & maintenance for 2 × SH-60
Launch/Recover Aircraft Sea State 5
Standard 1 × 57-mm gun
4 × 12.7-mm/.50 caliber guns
1 × Surface-to-Air Missile (SAM) launcher
3 × weapons modules



Ship Laid down Launched Commissioned Homeport
USS Independence (LCS-2) 01-19-2006 04-26-2008 01-16-2010 San Diego, California
USS Coronado (LCS-4) 12-17-2009 01-14-2012 04-05-2014 San Diego, California
USS Jackson (LCS-6) 08-01-2011 12-14-2013 12-05-2015 San Diego, California
USS Montgomery (LCS-8) 06-25-2013 08-06-2014 09-10-2016 San Diego, California
USS Gabrielle Giffords (LCS-10) 04-16-2014 02-25-2015
USS Omaha (LCS-12) 02-18-2015 11-20-2015
USS Manchester (LCS-14) 06-29-2015 05-12-2016
USS Tulsa (LCS-16) 01-11-2016
USS Charleston (LCS-18) 06-28-2016
USS Cincinnati (LCS-20) 04-10-2017
USS Kansas City (LCS-22)
USS Oakland (LCS-24)