Scuttlebutt Magazine - February 2008 - (Page 24) Page 24 • February 2008 www.scuttlebutt.com University of California research vessel rises to the call of duty At the University of California in San Diego, marine scientists have been conducting research aboard a floating instrument platform (FLIP). With no engines, it needs to be towed to the research site. To “anchor” it, the vessel is tipped 90 degrees so that 270 feet of its “tail” is submerged. The platform was built in 1962, developed as a stable platform to measure fluctuations in sound waves for a Navy program. Scientists also needed to determine how fluctuations in the sea floor affected the accuracy of bearing readings. FLIP is owned by the U.S. Navy and was developed by the Marine Physical Laboratory (MPL), Scripps Institution of Oceanography, University of California, San Diego. The research platform is a 355-foot-long manned spar buoy designed as a stable research platform for oceanographic research. It is towed to its operating area in the horizontal position and through ballast changes is “flipped” to the vertical position to become a stable spar buoy with a draft of 300 feet. FLIP has been used principally for acoustics research. It has also been used in other programs, including geophysics, meteorology, physical oceanography and in laser propagation experiments. It has operated in both the Atlantic and Pacific Oceans. FLIP has served as a oceanographic research platform for the Navy, the National Science Foundation and other agencies. The vessel is uniquely stable in rough seas where other research vessels experience difficulty. Carrying a research team of 11 people and a crew of five, FLIP can is carried in a 1,500-gallon sustain tank, and replenished research daily by a 30-gal/hour operations reverse-osmosis water for up to 30 maker. days withDuring the change out resupply from horizontal to vertical, and can crew members stand on operate external weather decks. As either driftthe vessel becomes vertiing or cal, the decks become moored. bulkheads and the bulkFLIP is The MPL Deep-8 beam Doppler sonar is heads become decks. To be constructed deployed. (L-R) Mike Goldin and Eric Slater towed, the vessel must of about 700 prepare for launch. blow the water out of the tons of Tripower, it does have a tanks with a high-pressure Ten steel, a product of the air system, lifting her to U.S. Steel Corp. The diam- small propeller that can rotate the vessel. Three the surface. eter of the hull is 21 feet diesel generators from the 300-to-260-foot supply 340 KW depth, tapering to 13 feet electrical power for at the 65-foot depth. This ship and scientific change in diameter needs. Fresh water makes FLIP less responsive to wave motion; in 30-foot waves FLIP’s total vertical FLIP is 300 feet long, with little of its motion has length above water when in use. In been less about 20 minutes, the air-filled tanks than three are replaced with ocean water, and feet. the stern sinks below the surface, flipThough it ping the bow section into a vertical has no Above, the main laboratory, while the vessel is horizontal; right, while the position. propulsion vessel is vertical. 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