Marinette Marine Launches First In Yard Patrol Boat Series

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Marinette Marine Corporation of Marinette, Wise., recently launched the YP 683 first of the 20 Yard Patrol boats under contract to the Navy's Naval Sea Systems Command. This YP was the first woodhull vessel launched at the Marinette yard since 1943 when the company launched the 192-foot white pine barges for the U.S. Maritime Commission, the yard's first contract as a shipbuilder.

The Yard Patrol boats have a wood hull and aluminum superstructure. They have an overall length of 108 feet, beam of 22 feet 9 inches, and full-load draft of 5 feet 9 inches. These YPs will be used by the Navy at the Naval Academy in Annapolis for instruction in seamanship, navigation, and marine engineering disciplines.

The YPs are being built beside two Mine Countermeasure (MCM) ships, also under contract to NAVSEA, in Marinette's 70,000-squarefoot, 95-foot-high Ship Erection Building that was specifically built for construction of wood-hull vessels. The massive building permits complete outfitting in an environmentally controlled atmosphere, allowing vessels to be nearly complete when moved outside for launching. The YP 683 was 95-percent complete when launched on the yard's 200-ton shiplift, a movable docking platform capable of launching and retrieval of vessels up to 120 feet long and 200 tons displacement. The original contract for six YPs was awarded to Marinette Marine by NAVSEA in August 1984. In December of the same year, a modification to the original contract was awarded to Marinette for seven additional YPs, and in September 1985 another option was exercised for seven more vessels, bringing the total contract to 20 boats.

Now in its 44th year of operation, Marinette Marine is well-known for its versatility in the design and construction of government and commercial vessels of all types.

For further information on Marinette Marine's yard services and facilities, including free detailed literature,

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