hi all'''' i am new on the forum , building a tug boat from k antkinson /G L MARIN/
my cuestion is on beta kool keel engine 25hp or 28hp /with 18''x10''prop,
displacement @dwl 5850lb 6to7knots max,shaft 1'' or 1''1/4 ,the keel void
zize 4 .2 mt x 80mm flat bar 2.1.mt each side., hop it will be ok.
i looking for advice on the type hp engine/zize of the shaft/ and void kooler capacity.
any help will be welcome
 cheers  carlos