20' SeaCraft heavy motor

[Terry England]

Originally Posted by Offshore Asset

....... Then running that 115 on the Seacraft until I put on a new motor. Luckily the Johnson is really clean and it is a 25" shaft, plus it weighs around 350lbs......

Offshore, Here is what I think you will see with the correct prop -
Miminum planing speed: 12-15 MPH
Max. Speed: (no tee top, light load) 32-34 mph
Max. Speed: Tee top, 6 tanks, dive gear etc.) 28-30 mph
Fuel burn: 6 GPH @ 4,000 rpm = 22-24 MPH (4 MPG)
Miami to Bimini - 15-18 gallons.
You will not have a race boat, however that is the weight motor the 20' SeaCrafts were originally designed for
- so just sit back a R-E-L-A-X.

Check with Fr. Frank, Tiny, Capt Terry, Denny, Tom Paris and others to see what they think. End to end that crew would have surpassed Magellan's circumnavigation with their 115 HP powered SeaCrafts. Lots of data with them to "adjust" my preliminary input.

[TomParis]

I dont know what pitch prop I have, but my 20' CC with a FICHT 115 will do 28-32 MPH with 3 adults and 30 gallons of gas in the tank.

not sure of my fuel burn, but I can play for a couple of hours in the bay around the St Marks river and only burn 5-6 gallons of fuel.

I cant wait to repower with a E-tec 115!