"CONVENTIONAL ENGINE: 35 HP OUTBOARD ENGINE MODIFIED TO ALLOW IT TO BE SUBMERGED FOR EXTENDED PERIODS OF TIME TO DEPTHS OF 400 FEET AND BROUGHT BACK TO THE SURFACE AND STARTED; NOISE DAMPENING JACKET REDUCES ENGINE NOISE;FULL THROTTLE OPERATING RANGE 5000-6000 RPM;2 CYLINDER,2 CYCLE ALTERNATING FIRING; PROPELLER IS A 3 BLADE, 10,500 IN. DIA BY 11.000 IN. PITCH STD;WEIGHS 118 LBS. W/O FUEL TANK; W/SELF WINDING STARTER"