Holy shi** g

--Mike

"Gregory Hall" wrote in message
...

"David" dh@. wrote in message
...
I've got an old boat very much like this one:

http://www.warnersdock.com/images/Fr...fores15yel.JPG


snip

THIS is top-heavy:
http://images.thebiggestbreasts.com/...fake_boobs.jpg

Caution: nudity. Adults only please.

--
Gregory Hall

"Mike" wrote in message
...
Holy shi** g

--Mike

"Gregory Hall" wrote in message
...

"David" dh@. wrote in message
...
I've got an old boat very much like this one:

http://www.warnersdock.com/images/Fr...fores15yel.JPG


snip

THIS is top-heavy:
http://images.thebiggestbreasts.com/...fake_boobs.jpg

Caution: nudity. Adults only please.

--
Gregory Hall




LOL, is that a look of pain on her face

Mike wrote:

Holy shi** g

Yes indeed! Amazing what they can with modern plastics ;-)


THIS is top-heavy:

http://images.thebiggestbreasts.com/...fake_boobs.jpg

Caution: nudity. Adults only please.

David,
Get a book on Naval Architecture and read about GM.
Every boat has the center of gravity above the center of buoyancy.
Weight added alone might not keep it upright.
Matt Colie


David wrote:
I've got an old boat very much like this one:

http://www.warnersdock.com/images/Fr...fores15yel.JPG

that I'm trying to make into a mini-houseboat,
sort of like a camper. I only expect to have
about 200-300 pounds in the roof and walls,
and the roof will only be about 48" above
the gunwale. The hull will weigh a *lot* more
than what is added, so shouldn't that alone
be enough to keep it from being top heavy
and flipping over? If I add weight, like a
couple hundred pound bags of sand down
in the hull to counterbalance, shouldn't
that take care of it? If so, should they
be placed on the sides, or in the center?

Matt,

Haven't heard from you in a while. Nice to have you back.

I remember that you knew my boat in her previous life. Take a look at her
now

http://home.maine.rr.com/rlma/Boat.htm

Have you heard anything about the previous owners? Last I talked to them,
one was having some medical issues and they weren't sure if they were going
to be able to go cruising. I've now lost contact.

Container ships sometimes have a slight negative GM, or used to 30 years ago
when we would watch them come down the harbor with a slight list, make the
turn, flop over, and continue on to sea with a slight list the other way.
They have enough freeboard and flare in the ends that the righting arms
would go positive after a couple degrees of heel. This loading made for
minimal rolling and least strain on the upper layers of boxes. You can only
get away with this in a very large ship though.

The mini houseboat fellow won't get very far trying to apply what he reads
about GM in a standard textbook to his problem. He should weight a sheet of
plywood or get it's weight, calculate how much he needs to make the cabin,
add about 50% for framing and other stuff, and then add the estimated weight
of anything else he plans to put on board. Next put a table on board with
the legs propped up a bit to get the top to about 75% of the cabin height.
Pile the table with the estimated weight and go aboard. If the motion feels
drunken and sluggish with very slow rools, the boat will probably be
uncomfortable as well as dangerous. Keep removing weight from the table
until a couple of people can walk around with the boat feeling solid and the
rail getting close to the water. Then figure if he can build a cabin
within that weight allowance.

Strong winds are another issue but it sounds like this is a lake boat to
spend most of its time on a mooring.

--
Roger Long

Roger,

I like both your practical answer and your pictures.

You're cruising my old stomping (sailing) ground. I do miss the coast.

Tom had recovered well and was looking good last time I spoke to him.
I'll send him the URL to your pictures.

I was kind of hoping that this guy would get the plan that there is a
whole lot to know before his question could be answered effectively.

A tanker I was 2AE on had a negative GM and a slight port on the way
out. Every wave made it snap to Stbd, stall a couple of seconds and
snap back. It was all a guy could do to stay on his feet. We did lose
the fire in one boiler, but the FM lit it off the bricks. My chief
called the bridge and told them if they tried to make for sea this way,
he would shut them down. - They believed him, but he still had to
listen to a bunch of griping because we lost two hours while they
finished correcting the ballast.

Matt

On Jul 4, 10:46*am, Matt Colie wrote:
Roger,

I like both your practical answer and your pictures.

You're cruising my old stomping (sailing) ground. *I do miss the coast.

Tom had recovered well and was looking good last time I spoke to him.
I'll send him the URL to your pictures.

I was kind of hoping that this guy would get the plan that there is a
whole lot to know before his question could be answered effectively.

A tanker I was 2AE on had a negative GM and a slight port on the way
out. *Every wave made it snap to Stbd, stall a couple of seconds and
snap back. *It was all a guy could do to stay on his feet. *We did lose
the fire in one boiler, but the FM lit it off the bricks. *My chief
called the bridge and told them if they tried to make for sea this way,
he would shut them down. *- They believed him, but he still had to
listen to a bunch of griping because we lost two hours while they
finished correcting the ballast.

Matt

Well, at the risk of being simple. I still suggest it's the wrong boat
for the job. He just needs to start with the right boat. He can
justify, defend, and make any excuses he wants.. Still water,
whatever.. But once you leave the dock, things can change quickly to
something you have never seen before.
Anyway. Have a great fourth, go out in your boats for me Scotty

On Jul 4, 7:52*am, wrote:
...
Well, at the risk of being simple. I still suggest it's the wrong boat
for the job. He just needs to start with the right boat. He can
justify, defend, and make any excuses he wants.. Still water,
whatever.. But once you leave the dock, things can change quickly to
something you have never seen before.
Anyway. Have a great fourth, go out in your boats for me Scotty

It wouldn't surprise me in the least to find that the boat was
originally sold in several configurations (eg. bow rider, 1/3 decked,
cuddy cruiser, etc.). So, if the guy wants to convert from one to the
other and enjoys doing the work the hull might well be adequate.
Since we've only got a pic of the deck it is a little hard to tell
what the hull form is, but given the bluff bow I'm guessing it's a
Whaler style. If so, he's got oodles of stability. In Hawaii many
small fishing boats have home built hard dodgers very like lobster
boat style cabins. They put them on to get some cover when operating
at sea and stability isn't typically an issue at all. If I were
making this kind of conversion I'd put a little cuddy over the
foredeck, build a hard dodger and run some rails off of that aft to
use as supports for a Bimini, surfboard racks and tent. I'd probably
also put a proper transom on the boat and build an external rack for
the outboard. The cuddy and the transom will make the boat much less
susceptible to swamping the result may be more seaworthy than the
original. Sure he can do some testing to see if stability is going to
be an issue. I like Roger's method and if he can secure the table and
weights he can even go out and do some dynamic testing. But, in the
end, I'd be amazed if a well constructed cuddy cabin would make the
boat dangerously unstable.

Happy 4th!

-- Tom.

"Roger Long" wrote
The mini houseboat fellow won't get very far trying to apply what he reads
about GM in a standard textbook to his problem.

My guess from the OP's photo is that he has a tri-hull, of typical heavy
60s-style construction. If he goes through with his hard-top plan, I'm
thinking he'll end up with something akin to a pontoon boat.

On Jul 4, 12:22*pm, "Ernest Scribbler"
wrote:
"Roger Long" wrote

The mini houseboat fellow won't get very far trying to apply what he reads
about GM in a standard textbook to his problem.

My guess from the OP's photo is that he has a tri-hull, of typical heavy
60s-style construction. If he goes through with his hard-top plan, I'm
thinking he'll end up with something akin to a pontoon boat.

Here is a neat program that will give you some pretty basic ideas of
rightingmoments, bouyancy, trim, etc..

http://carlsondesign.com/#Fun_Shareware

It's shareware, but for a quick idea of a design and it's capability,
it is ok..