Boat Stability

dlp_90731

dlp_90731

Cadet
Joined
Feb 20, 2011
Messages
28
Hi everyone! I'm new to the forums and am here to stay for sure. :) I have a 1973 26' Livesay FB with a Crusader 350 engine Velvet Drive 71c trans. single screw. When drifting or at anchor if people move to the port side or starboard side it tips bad. Almost to where it can dump you in the water. Is it because the deck is raised 8" or because it has saddle tanks? Or a combo of both? I have attached pictures and if more are needed I can post. Thanks for any input.Feb. 2011 460.jpgFeb. 2011 351.jpgFeb. 2011 273.jpg
 
I

infideltarget

Master Chief Petty Officer
Joined
Aug 30, 2010
Messages
802
Re: Boat Stability

Sounds like you need thinner / lighter passengers! ;) J/K! Just wanted to say welcome!
 
H

hottoddie

Seaman Apprentice
Joined
Feb 26, 2011
Messages
40
Re: Boat Stability

26 ft flybridge boat with 8.8 to 9 ft beam will be top heavy. I'm not surprised your boat acts this way. You will need to get out to 10 ft plus for decent stability.
 
dlp_90731

dlp_90731

Cadet
Joined
Feb 20, 2011
Messages
28
Re: Boat Stability

Hottoddie could both tanks be drawn from at the same time to create more stability or maybe a belly tank?
 
Bondo

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,095
Re: Boat Stability

Ayuh,... My guess is, it's got a Deeep V, which makes it ride nice, but tippy at rest...
 
sasto

sasto

Captain
Joined
Jun 1, 2010
Messages
3,918
Re: Boat Stability

What scares me is when they do it at running speed. I adjust the tabs a little....then they all go to the other side. Hang on!

Could very well be your assessment of the raised deck, or added weight above the waterline.

Nice looking boat, hope you get used to her.
 
dlp_90731

dlp_90731

Cadet
Joined
Feb 20, 2011
Messages
28
Re: Boat Stability

Bond-o yeah really nice ride just a bit tippy at rest like you said and sasto under way the ride is super and not tippy even when six passengers moving around. I gather from both your assessments that this is the nature of this deep v hull and lowering the deck and running both tanks equal will not help it at rest?
 
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infideltarget

Master Chief Petty Officer
Joined
Aug 30, 2010
Messages
802
Re: Boat Stability

Just tell 'em..."HEY...you three stay on this side of the boat, and you three stay on that side. NO moving around!" Problem solved. ;)
 
Ned L

Ned L

Commander
Joined
Sep 17, 2008
Messages
2,268
Re: Boat Stability

The cockpit sole being raised 8 inches would make a noticable difference in her initial stability at rest when you have a good number of people walking around. The saddle tanks (esp. when full) will help the situation. Unfortunately as others said, with a deep "V" hull, and the cockpit sole raised like that 'it is what it is' so to speak. Those saddle tanks are actually better for initial stability than a 'belly tank', (unless you can reduce the height of the tank significantly with the same volume by going to a belly tank).

I just took another look at the exterior picture you posted. Her chines are barely in the water. That 8" would have made a noticable difference.
 
dlp_90731

dlp_90731

Cadet
Joined
Feb 20, 2011
Messages
28
Re: Boat Stability

Thanks for the replies and also the cracks i need a good laugh this boat has been stressing me out. Well Ned L i figured as much about the deck and tanks. I will now move forward with some restoration and repairs hopefully it will help. I'm going over to the Boat restoration,building, and hull repair forum and get this thing rolling.
 
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