FS17 low hp performance

[rbecker08]

That's what I am after some design docs.....but it doesn't work on my phone I'll look at it tonight on the desktop and thanks for sticking with and following up on this question.

[Matt Gent]

So that uses a more detailed Savitsky model, and I'd of course defer to Jacques' modeling.

The key is to ground whatever you use to actual performance at a known displacement, and then be honest about what displacement you will operate at. My boat can vary by 1500lb depending on what I'm doing with it; even an FS17 could be 800lb different empty vs carrying a few people and picnic gear.

[rbecker08]

Sorry to beat a dead horse but what is the difference between loaded down and dwl. It implies there is a designed weight limit and a max weight limit. I know the dwl is around 1400 to 1500 for the fs 17. What is the max if that number exists

[jacquesmm]

Don't overthink.
The DWL is set arbitrarily by the designer. I estimate what a reasonable standard displacement will be and design the boat to float at that weight.
The boat is loaded at that displacement. In the study plans, I show the DWL and the displacement at the DWL.
I also show the PPI which is how much weight it takes to bring the DWL up one inch.
The weight limit is up to you, just be reasonable. Try to stay around the designed displacement.