outboard
My 79 Catalina 22 came with a 7.5 hp Chyrsler long shaft. It pushed the boat very well under ALL conditiions. It is now up on the rack for "servicing". In the mean time I have been using my "backup" outboard, a Nissan 3.5 hp short shaft. In calm water it works great and pushes me along at 3.5 mph mid throttle (according to GPS!). Great for getting out to the bay and back in.HOWEVER, that short shaft ain't no good if there is bad chop on the bay as it either comes out of the water or almost drowns the motor especially if the waves are coming from astern. So under these conditions,windy, I have to use the sails (darn!!). The little 3.5 hp actually works better for me as it is light (28 lbs) and easy to remove when I park the boat. But you see the limitations.