Per the Gori calculator that was used by AB Marine
, it is a 16.5" X 11" LH prop. It worked great with my 29HP Volvo
Model 2003 normally aspirated engine
. Sailing, it was worth about 3/4 knot
in winds that would move me at 5 knots with my previous 2 blade
fixed prop. Once installed I'd go 5 3/4 knots in the same conditions. If one is a racer
that makes a real difference (I'm not), but if one is a cruiser it makes a difference too. 3/4 of a knot
over the course of a day can get one to a harbor before as opposed to after night fall.