Boat engine : in-board diesel engine 235-375 hp
(shaft-drive) John Deere
6081 A

The 8.1L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled or turbocharged with jacket water aftercooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.

Ratings M4 M3 M2 M1
Rated Power--hp (kW) 375 (280) 330 (246) 300 (224) 235 (175)
Rated Speed--rpm 2400 2300 2200 2100
Low Idle Speed--rpm 600 600 600 600
Peak Torque--lb-ft (N.m) 982 (1332) 935 (1268) 900 (1220) 798 (1082)
Peak Torque Speed--rpm 1900 1800 1700 1500

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