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Old 01-27-2019, 05:18 PM   #12
Cigatoo
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City: Narragansett Bay
Vessel Model: Grand Banks 36 Classic #715
Join Date: Sep 2016
Posts: 1,857
Quote:
Originally Posted by jefndeb View Post
OK, so basically since a full displacement type hull cannot get on plane due to its design, an engine that has less HP is sufficient to push through water were as a Semi Displacement hull that can partially get up on plane needs this extra HP to get up on plain although its not very fuel efficient to do so..do I have this right?
However that semi displacement hull can also be run at hull speed with very low HP. Grand Banks trawler is an example of a semi displacement hull that can be equipped with a low HP engine designed to be run at 7-8 kts or twin high hp Cats To get it up on plane......using lots of HP and fuel.
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