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The port bow plane of the Soviet-era submarine B-39. Diving planes, also known as hydroplanes, are control surfaces found on a submarine which allow the vessel to pitch its bow and stern up or down to assist in the process of submerging or surfacing the boat, as well as controlling depth when submerged.
H1 Unlimited is an American unlimited hydroplane racing league that is sanctioned by the American Power Boat Association (APBA). Until 2009, the series was known as ABRA Unlimited Hydroplane, in turn renamed from APBA Unlimited Hydroplane in 2004. The H1 Unlimited season typically runs from July through September, consisting of five races.
In unlimited hydroplane racing, both were eventually supplanted by gas turbine engines, which exhibit even more favourable power-to-size and power-to-weight ratios. [17] Some of the most significant Merlin-powered hydroplanes include: [citation needed] Slo-mo-shun V (from 1954 on, 1954 Gold Cup winner, first for Merlin power)
Although a bit of a misnomer as the boats aren't without limits, unlimited hydroplanes have much fewer restrictions than with limited hydroplane racing. These 30 foot, 6,800 lbs boats most often powered by a Lycoming T55 -L7 turbine engine (used from the Vietnam era to the present day in the CH-47 Chinook military helicopter ), which is capable ...
With just five races again on the 2023 H1 Unlimited circuit, points will be very important for the national championship — especially from the get-go.
Miss Thriftway was an unlimited hydroplane in the 1950s and 1960s. Ted Bowhay was the Seattle owner of the Miss Thriftway in the early 1960s. He was also known for having owned & raced the limited Hydroplane "Redskin." With Bill Muncey driving, the boat won the 1956 and 1957 American Power Boat Association Gold Cup. [1] [2]
Blue Bird K3 is a hydroplane powerboat commissioned in 1937 by Sir Malcolm Campbell, to rival the Americans' efforts in the fight for the world water speed record. She set three world water speed records , first on Lake Maggiore in September 1937, then later twice raising her own record.
A hydroplane (or hydro, or thunderboat) is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy. A key aspect of hydroplanes is that they use the water they are on for lift rather than buoyancy, as well as for propulsion and steering : when travelling at ...
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