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Old 01-31-2015, 04:55 PM   #178
Gulfstar 36
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City: Kent Island
Vessel Name: Sundowner
Vessel Model: Gulfstar 36 MrkII
Join Date: Jul 2012
Posts: 234
Rocks,

I think that Gulfstar was well bought into using Perkins engines, the 36 in this year had 4 power options that I know of a single 4.154 or a 4.236 and twins in the same engine. The next smaller 4 cylinder Perkins is the 4.108 at about 50HP. I have the same boat as you but have twin 4.236. I run 7 knots at 1800-1900 RPM. I can get 9 knots at WOT, but I don't push my 1975 vintage engines that hard for more than a min or two.




Quote:
Originally Posted by On The Rocks View Post
Just curious why most twin engine displacement trawlers have engines that are the same hp as would be used if the boat had a single screw?

For example my 36 fd trawler has two 62 hp engines. Since 62 hp is more than enough power to cruise at hull speed wouldn't it be more efficient to have two 31 hp engines and still be able to cruise at hull speed?
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