News: Kvichak Delivers Foil-Assist Catamaran

Thursday, May 15, 2003

Kvichak Marine has delivered the first of two foil-assist catamarans built for the United States Army Corps of Engineers (USACE) Mobile District. Dubbed S/V Irvington, its primary mission is to conduct hydrographic surveys in support of dredging and channel maintenance operations. The second vessel, which has a summer delivery, will operate in the New York District.

The 54 x 20-ft. aluminum catamaran incorporates the Hysucat foil design, a system which is designed to provide the operator with increased fuel efficiency; improved speed and low wake wash. The fully adjustable aft trim foil provides ultimate control for variable loads and sea conditions. "The Irvington is one of the most efficient vessels that Kvichak has ever built," said Scott Weiler, Kvichak's project manager. "I am very pleased with our new generation of Hysucat foils."

The vessel is powered by twin Caterpillar 3406E engines rated for 700 bhp at 2,200 rpm, the Irvington has a top speed of about 34 knots and a cruising speed of about 28 knots.

The highlight of the Irvington’s on-deck survey package is a Reson multi-beam sonar system installed on a retractable strut located between the two hulls. The strut, designed in collaboration between Kvichak and the USACE's Marine Design Center, travels vertically on a T-track system and stows in a fixed position above the working deck. In the deployed position the strut allows an unobstructed transverse scan angle of up to 140 degrees.

Located in front of the house is a Reson forward-looking sonar mounted on a second retractable strut. The forward-looking sonar enables the survey crew to locate submerged obstructions before the vessel is directly over them. Inside the spacious house is a state-of-the-art survey station. The station is the platform for two PC's, four monitors, one Odom Echo Track depth recorder and a GPS control box. Next to the survey station is a 2-in.- diameter stilling well that allows periodic measurement of vessel draft during survey operations.

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