Construction of the Amphibious Transport Dock Ship

3/5/2002

Construction of the Amphibious Transport Dock Ship

Northrop Grumman Corporation (USA) recently achieved an important milestone in the construction of San Antonio when it completed early landing of all four main propulsion engines and three of five power generators on their foundations. In addition, 55 of the 210 units have been erected on San Antonio, the lead ship in the Navy's new LPD 17 Class of amphibious transport dock ships. The ship is scheduled for delivery in November 2004.
San Antonio's main engines include four Colt-Pielstick turbo-charged diesel engines of 10,400 HP each. Each set of two engines is paired with a Philadelphia Gear main reduction gear, which in turn drives two shafts with Bird Johnson five-blade controllable pitch propellers. A new high-power, low-drag propeller hub design provides improved propulsion efficiency. The ship's top speed is in excess of 22 knots. San Antonio's electrical power will be provided by five 2500 kW Caterpillar diesel generator sets. The ship also features all-electric auxiliaries, including electric heating and electric water heaters for improved crew habitability, reliability and reduced sailor maintenance. The LPD 17 amphibious transport dock ships will be 684 feet long and 105 feet wide. Their amphibious warfare mission involves rapidly embarking, transporting and landing elements of an assault by helicopter, large hovercraft and amphibious vehicle. Start of production of LPD 17 followed a 36-month period of design, material procurement and engineering.

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