What are incline tests?

[markpierce]

Are they to test whether the vessel floats*on her lines?* How does one correct a problem?

 

[Moonstruck]

<ul>[*]Mark, I don't know of a test called specifically an incline test.* I do know that when I had a slip next to the Hatteras factory slip at Morehead City Yacht Basin that they put their larger yachts through allot of tests.* One of the things you would see is lead weights stacked at various places around the boat.* That way they knew how much weight to shift around to make her float perfectly on her lines.* They may do such things as move a battery bank or add a tank.** The naval architects would carefully calculate weight before construction, but sometimes the as built boat may be a little different than the plan.* In building they could run into difficulty locating all the systems as designed.* It just usually took a little fine tuning.* Their sea trial crew really noted everythng about the boat.[/list]

 

[skipperdude]

Mark,

Do a search on incline test.**We had a discussion on this a while back.

Some pretty good comments.

SD

 

[markpierce]

Thanks, skipperdude.* Based on past experience I'd learned not to trust searches here, but this one worked.

Seems like Seahorse Marine is going the "extra mile" since there is no intent to carry revenue passengers on the boat.* It is prohibited in the U.S. since the vessel is foreign-made.* Perhaps because the Coots are variously equipped, the builder wants to get it right.

 

[AllanY]

The incline test is done to test the stability of the vessel and will be used to determine if ballast will be required to prevent an unstable boat at sea

Allan

 

[FF]

On a commercial boat in the US an incline test is to assess the stability to carry passengers for HIRE$$$$.

The PAX weights have been raised , I think its now 185 LBS per .

We have done it with plastic 55G drums lined along one rail, and the water measured to get to the weight with the USCG watching.

The boat can loose 1/2 the freeboard (water to deck edge) or less with the rated PAX weight.

A port hole counts as deck edge , unless the port is fitted with a (usually metal ) internal cover that must be dogged underway.

OF more interest to the usual pleasure owner is the roll period , determined by rocking the boat from side to side (a couple of folks running to & fro) to get the boat rolling.

From fully down on one side till back depressed on that side is the roll period.

Too quick (hard chines?) and the boat will be a vomit comet, too slow is also a problem.

The real question is the speed of reverse accelerations , that's where the biggest discomfort comes from.

Slow easy , even deep, rolls are a good candidate for flopper stoppers .