shakey hello.
Thank you for your help. additional information that you need are below.
20 ft maximum torque lb/2000rpm
Maximum speed: 2500 rpm
maximum power: 10HP/2500rpm
gearbox ratio: 2:1
waterline length of 18 ft.
plates welded aluminum hull material
direction of propeller rotation: Right
Hull type not know but I can tell you that was originally lifeboat opendeck
without keel but the building has 2-inch flat bar along the entire length and two anti-rolling keels on each side
thanks again for help.