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2. Marine propulsion - Wikipedia

   en.wikipedia.org/wiki/Marine_propulsion

   V12 marine diesel engines . Human-powered paddles and oars, and later, sails were the first forms of marine propulsion. Rowed galleys, some equipped with sail, played an important early role in early human seafaring and warfares. The first advanced mechanical means of marine propulsion was the marine steam engine, introduced in the early 19th ...

3. Marine steam engine - Wikipedia

   en.wikipedia.org/wiki/Marine_steam_engine

   Period cutaway diagram of a triple-expansion steam engine installation, circa 1918. This particular diagram illustrates possible engine cutoff locations, after the Lusitania disaster and others made it clear that this was an important safety feature. A marine steam engine is a steam engine that is used to power a ship or boat.

4. Desmodromic valve - Wikipedia

   en.wikipedia.org/wiki/Desmodromic_valve

   The common valve spring system is satisfactory for traditional mass-produced engines that do not rev highly and are of a design that requires low maintenance. [1] At the period of initial desmodromic development, valve springs were a major limitation on engine performance because they would break from metal fatigue.

5. List of GM bellhousing patterns - Wikipedia

   en.wikipedia.org/wiki/List_of_GM_bellhousing...

   Do not confuse with later AMC 2.5 L engine that uses GM small corporate pattern . Chevrolet Turbo-Thrift engine (post-1962) Chevrolet 153 Inline 4 (Chevy II, pre-Iron-Duke - includes the Vortec 3000/181 industrial/marine crate motor) Detroit Diesel V8 6.2L and 6.5L; Duramax V8; Generation III V8s with modifications. These modifications include ...

6. Astern propulsion - Wikipedia

   en.wikipedia.org/wiki/Astern_propulsion

   The Sierra signal flag used to convey, "I am operating astern propulsion.". Astern propulsion (as applied to a ship) is a maneuver in which a ship's propelling mechanism is used to develop thrust in a retrograde direction.

7. Cleveland Diesel Engine Division - Wikipedia

   en.wikipedia.org/wiki/Cleveland_Diesel_Engine...

   The Cleveland Diesel Engine Division of General Motors (GM) was a leading research, design and production facility of diesel engines from the 1930s to the 1960s that was based in Cleveland, Ohio. The Cleveland Diesel Engine Division designed several 2 stroke diesel engines for submarines , tugboats , destroyer escorts , Patapsco -class gasoline ...