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Old 10-13-2007, 04:34 PM
doug7488 doug7488 is offline
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Join Date: Jun 2004
Location: li,ny
Posts: 172
Default Re: Boat porn of a 25 Seafari beasty

I am sure to be sticking my neck out on this one - please feel fee to correct me.
Well, I can see why the ballast system was not implemented.
I doubt that the added weight in the bilge would add any lateral stability to the boat.
A boats lateral stability is mostly comprised of its horizontal sufaces, obviously, a boat with an 8 foot beam & 25 degree deadrise has a relatively small amount. Not to mention the lack of lifting strakes.
Sinking a boat further in the water does not change its footprint.
By effectively lowering the Center of Gravity of the boat by flooding the compartments, gains in stability, if any would be minimal.
How much would the boat actually lower?
2"-3"-4" tops?
Ever step in a swamped boat? - not to stable!
Yeah, I know, the water isn't contained, yada yada yada...
What happens to the self draining deck during this procedure?
How well is the boat going to plane off with, I don't know -1600 lbs.(200 gallons water) of dead weight added?
Certainly an outboard won't like it.
Even if the positives outweighed the negatives, there is simply no room available in our size boats for it to be practical.
Typically, where Ballast Tank B is located, there is a 100 gallon fuel tank. Not much room under the deck either side of it either.
Where Ballast Tank A is, the deck usually steps down in a cabin type boat - for increased head room. Again, lack of room.
Intake Scoop 19, even if minimized in size, would surely have an impact on speed.
I wouldn't want to depend on a valve/hose connection to stop water coming in when the boat is at speed and there is 40 psi pressure in the fill tube.
If you are really concerned about the boat rocking at rest, add a pair of mooring umrellas to slow it down, or get a flats boat!
Once again, I do not see the "Ballast Problem"
The boat is a deep V - meant for offshore, whitewater.
Roll is inherent in the design.
It is not meant for the back bays, if it was it surely wouldn't have a 25 degree bottom on it.
Thinking back to when I had my 1987(?) 23' WAC, it too, rolled quite a bit. I think that is basically the same bottom as all the other 23's running around?
Again, the problem exagerrated by the higher deck and helm.
The nicest riding offshore boat that I owned was my 24' Progression with 300 Merc. It gave the best of both worlds-
High speed and stability - I think that boat has a 22 degree bottom to it, along with lifting strakes.
I'd like to graft the Seafari's Cabin to that hull!
C'mon, lets here it from the nay sayers!
Funny thing how the picture on the patent design resembles a Seavette...LOL!
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