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In 1984, Yamaha introduced their first four-stroke outboards, which were only available in the low-power range. In 1990 Honda released 35 hp and 45 hp four-stroke models. They continued to lead in the development of four-stroke engines throughout the 1990s as US and European exhaust emissions regulations such as CARB ( California Air Resources ...
When submerged each propeller was driven by a 660-horsepower (492 kW) electric motor. They could reach 17.5 knots (32.4 km/h; 20.1 mph) on the surface and 9 knots (17 km/h; 10 mph) underwater. On the surface, the boats had a range of 7,050 nautical miles (13,060 km; 8,110 mi) at 9.2 knots (17.0 km/h; 10.6 mph) and 62 nmi (115 km; 71 mi) at 4 ...
The vessel was purchased by Scripps director William Nierenberg on July 27, 1984, as a replacement for the outgoing RV E. B. Scripps. [4] She was purchased from the chartering firm Midnight Boats, based in Louisiana, with SIO using the marine broker company Marcon International, Inc. [5] After being purchased, she was renamed after Robert Gordon Sproul and underwent a number of modifications ...
Thrust-specific fuel consumption (TSFC) is the fuel efficiency of an engine design with respect to thrust output. TSFC may also be thought of as fuel consumption (grams/second) per unit of thrust (newtons, or N), hence thrust-specific.
Do 27B-2 powered by a 254 kW (340 hp) Avco Lycoming GSO-480 piston engine with a three-bladed propeller and a larger tail, one built. Do 27H-2 Do 27H-2 Variant of the H-1 for the Swiss Air Force with some modifications as applied to the Do 27Q-1 Do 27J-1 Production of the Do 27A-4 for Belgian Army, 12 built. Do 27K-1
Verado engines are available in 250 hp and 300 hp (V8), 350 hp and 400 hp (V10, introduced in 2022), and 600 hp (V12) as of early 2021. In 2007 Mercury Marine began selling its Zeus drive system. [6] Developed by Mercury and its joint venture company Cummins MerCruiser Diesel (CMD), the Zeus drive is a dual-engine pod drive system.