I really get a kick out of looking at these marine engines ( well, all engines, actually). This one, for instance:Wartsila NSD ( Sulzer) RTA 96 C, a 2 two-stroke diesel used to power tankers, cargo ships, etc. "The most powerful and most efficient piston prime-mover in the world today. Bore of just under 3'2", stroke of just over 8'2". Available in 6 through 12 cylinder versions (all inline). Maximum continuous power of 89,640 HP is obtained at 100RPM with the 12 cylinder version. Maximum economy power of 53,244 HP is obtained at 90 RPM. The engine exceeded 100,000 horsepower during overspeed testing (all of 101.5 RPM!)" Buy one now! : http://www.yikang-marine.com/yikang/Html/content/sales/hsd.html More info. on it towards the bottom of that page: http://www.prime-mover.org/Engines/Pictures.html The top-end: Crankshaft (!!!!!):