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Old 07-27-2007, 11:45 PM
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Default Are All <20' Boats Unsinkable?

I was told that all <20' boats sold in the USA are required to be unsinkable? I always thought the Whaler and McKee craft were the only true unsinkable small boats.
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Old 07-27-2007, 11:50 PM
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Default Re: Are All <20' Boats Unsinkable?

CG requires it. little bayliner...unsinkable. some mfg's go beyond that and have bigger boats that are unsinkable.
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Old 07-27-2007, 11:57 PM
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Default Re: Are All <20' Boats Unsinkable?

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troutpioneer - 7/27/2007 10:50 PM

CG requires it. little bayliner...unsinkable. some mfg's go beyond that and have bigger boats that are unsinkable.
CG says all boats <20' will be unsinkable, why don't these boats advertise this like the Whalers do?
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Old 07-27-2007, 11:59 PM
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Default Re: Are All <20' Boats Unsinkable?

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troutpioneer - 7/27/2007 10:50 PM

CG requires it. little bayliner...unsinkable. some mfg's go beyond that and have bigger boats that are unsinkable.
CG says all boats <20' will be unsinkable, why don't these boats advertise this like the Whalers do?
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Old 07-28-2007, 12:07 AM
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Default Re: Are All <20' Boats Unsinkable?

they call it positive floation sometimes. thats not to say that some unsinkable boats wont fill up with water and turtle over, but they wont sink. like i said, some carry on the unsinkable capabilities beyond the 20' requirement. (i think its 20). pioneers 220 is also unsinkable.
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Old 07-28-2007, 12:08 AM
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Default Re: Are All <20' Boats Unsinkable?

AW Geez.... my beloved 19+Angler might stay afloat but it would be bows-up for sure. The hull is a 1979 but I added some flotation when I did the deck 2 years ago. I put nothing in the back 1/3 of the hull. OOPS. Laird
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Old 07-28-2007, 12:09 AM
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Default Re: Are All <20' Boats Unsinkable?

im not sure when it became 'required'.
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Old 07-28-2007, 08:55 AM
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Default Re: Are All <20' Boats Unsinkable?

From what I understand, McKee and Whaler have floatation through the entire hull, above deck as well. so, if it fills with water, it will be tougher to turtle the boat - not impossible, though. It's more likely to stay upright.

Most boats, mine included, just have floatation below the deck. So, if you take a bunch of water above deck, suddenly below deck is more buoyant than above deck, so the boat turns bottom up. It will stay afloat, but will be upside down.
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Old 07-28-2007, 10:15 AM
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Default Re: Are All <20' Boats Unsinkable?

You can fill a Whaler with water, put all your crew and gear on it, and the engine will still be out of the water. This is called positive floatation.

A bayliner might have basic floatation that will keep part of the hull above water but that's it.

Also you can cut the Whaler in half and both halves will float.
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Old 07-28-2007, 10:33 AM
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Default Re: Are All <20' Boats Unsinkable?

The floatation required by USC on the 20 feet and less is just basic floatation. That means that if the boat fills with water it wont sink. As stated it does not mean it will float right side up. The whalers, mcKees, Edgewaters etc have foam laminate all over, big difference.
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Old 07-28-2007, 10:42 AM
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Default Re: Are All <20' Boats Unsinkable?

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The Classic - 7/28/2007 9:15 AM



Also you can cut the Whaler in half and both halves will float.
That would be great if one of your crew members goes "off" with a chainsaw
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Old 07-28-2007, 11:25 AM
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Default Re: Are All <20' Boats Unsinkable?

The Coast Guard requires that all rowboats or outboard powered boats under 20 feet have LEVEL flotation. Boats in this size range are the most commonly swamped boats and level flotation is required to provide a stable rescue platform.

I would assume most companies don't advertise this unless their whole line is unsinkable because then you might limit your choices to only those models they build that are unsinkable and they certainly don't want to overplay flotation's importance if they don't offer it on their bigger boats as you would then never buy them.

I also could care less if both halves float as I've haven't seen a boat split in half since the Posideon Adventure.
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Old 07-28-2007, 12:06 PM
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Default Re: Are All <20' Boats Unsinkable?

I had a Renken that had foam under the gunnels, about 8" thick, all they way around the boat. It really made the boat feel solid, and was a lot of foam, if you did the math.

I once anchored off a beach in front of a friend's house, and swam to shore to pick him up. Flat seas, way outside the break.

We ate lunch and came back to the boat about 45 minutes later. The tide had been dropping, and the surf had been increasing, and as we watched, whitewater crashed over the boat. OH MAN!!!!

Made it out there, and the boat was full of water, and everything that floated was gone, but the boat was floating. Started her up, and pulled forward out of the impact zone. After bailing to about our ankles, we pulled the plug and got on plane to suck out the rest of the water.

I later discovered that the foam behind the coamings was added by the previous owner. It was expanding foam from a can. THANKS, DUDE! IT WORKED!

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Old 07-28-2007, 12:26 PM
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Default Re: Are All <20' Boats Unsinkable?

Upright, level flotation is required by the CG on all boats under 20 feet.

One reason some boat company don't advertise this fact is they have a different veiw on marketing - no negatives. It "sounds bad" if you talk about a boat sinking (for whatever reason). They feel this is a detriment to sales. They would rather talk about the fun, excitement, etc of boating. It's kind of a bummer if they have to point out the possiblity that the buyer might have a problem (after all, boating is fun and carefree).
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Old 07-28-2007, 12:47 PM
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Default RE: Are All <20' Boats Unsinkable?

In the rough sea conditions that you will most likely need that level floatation the waves can roll your hull over and over like kids tumbling down a hill. Don't be lulled into the my boat is unsinkable attitude. The hull may float, but trying to stay on it might be difficult if not impossible.
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Old 07-28-2007, 03:01 PM
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Default RE: Are All <20' Boats Unsinkable?

Quote:
Old_Whaler - 7/27/2007 10:45 PMI always thought the Whaler and McKee craft were the only true unsinkable small boats.
Ya, until you drill a screw hole and don't seal it properly and the foam fills with water. I'll pass on any hull that uses foam to fill voids.
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Old 07-28-2007, 04:00 PM
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Default RE: Are All <20' Boats Unsinkable?

Quote:
Old_Whaler - 7/27/2007 10:45 PM

I was told that all <20' boats sold in the USA are required to be unsinkable? I always thought the Whaler and McKee craft were the only true unsinkable small boats.
Indeed. I don't think a <20' boat has ever sunk.
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Old 07-28-2007, 04:20 PM
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Default Re: Are All <20' Boats Unsinkable?

Just so others could begin throwing darts, figured I would join in.

Most boats are fiberglass. Throw a sheet or piece of plain old fiberglass into the water and it will sink.

Plastic: Now that is a different story. Throw a piece of plastic, Roplene to be exact, into the water and it will float.

“The Classic” posted above:

You can fill a Whaler with water, put all your crew and gear on it, and the engine will still be out of the water. This is called positive floatation.

A bayliner might have basic floatation that will keep part of the hull above water but that's it.

Also you can cut the Whaler in half and both halves will float.

I am not disputing what was posted, in fact I agree with the statements. The same is true of a Triumph. The only difference is, and if I had the technical skills, I could weld my Triumph back together again. To my knowledge, you cannot weld that fiberglass boat back together. That to me is a big difference.
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Old 07-28-2007, 05:20 PM
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Default Re: Are All <20' Boats Unsinkable?

Quote:
OspreyVic - 7/28/2007 3:20 PM

Just so others could begin throwing darts, figured I would join in.

Most boats are fiberglass. Throw a sheet or piece of plain old fiberglass into the water and it will sink.

Plastic: Now that is a different story. Throw a piece of plastic, Roplene to be exact, into the water and it will float.

“The Classic” posted above:

You can fill a Whaler with water, put all your crew and gear on it, and the engine will still be out of the water. This is called positive floatation.

A bayliner might have basic floatation that will keep part of the hull above water but that's it.

Also you can cut the Whaler in half and both halves will float.

I am not disputing what was posted, in fact I agree with the statements. The same is true of a Triumph. The only difference is, and if I had the technical skills, I could weld my Triumph back together again. To my knowledge, you cannot weld that fiberglass boat back together. That to me is a big difference.

Your right, you can't "weld" a fiberglass boat back together. But you can "glass" it.

Just exactly when do you suppose you'll need either to weld or glass two halves of a boat back together?
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Old 07-28-2007, 08:09 PM
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Default Re: Are All <20' Boats Unsinkable?

Hey, Carolia Skiffs can be cut in THREE pieces and still float the load. . . . .So what?

I guess it would be great if the boat floated upright with the engine still working as Boston Whaler claims, at a heck of a price we must admit.

I went with Carolina Skiff, lots and lots less money and my only need is to know that at least part of it will float, topsy turvy or not. Just so it doesn't sink. Just give me something floating to hang onto 'till help arrives (maybe in a Whaler).





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