Giuseppe,
You still do
not need elevator pontoons if you have a perforated deck across your pontoon
hull as Joe suggests and you use the partitioned hulls to submerge only the bow
of your pontoon boat to float the sub off.
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
It is the mark of an educated mind to be able to
entertain a thought without accepting it.
- Aristotle
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Info
Sent: Monday, November 06, 2006
6:42 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] A
Solution
I have just a big problem i can't move the subs from the
water with a trailer, also my location is very hard place!!! i need
to recovery the subs on a pontoon for fill tanks and charge batteries, i
leave everythings on water for all summer season .......Have you seen the subs?
----- Original Message -----
Sent: Tuesday, November
07, 2006 12:10 AM
Subject: RE:
[PSUBS-MAILIST] A Solution
Giuseppe,
Why build a separate
submersible platform when all you need to do is flood one end of your pontoon
floats (if modular) to incline the deck and float the sub off?
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
It is the mark of an educated mind to be able to
entertain a thought without accepting it.
- Aristotle
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]
On Behalf Of Info
Sent: Monday, November 06, 2006
5:46 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] A
Solution
i just finish to drawing a pontoon with a platform in the
middle for lift a subs, the lift is able to move about 4000 lbs.
I need for move my subs on the dive site and also for fill
tank & batteries
----- Original Message -----
Sent: Monday, November
06, 2006 10:59 PM
Subject: Re:
[PSUBS-MAILIST] A Solution
I'm liking the sound of this. Can we stand on the ballast tanks and pee
over the side? Vance
-----Original Message-----
From: joeperkel@hotmail.com
To: personal_submersibles@psubs.org
Sent: Mon, 6 Nov 2006 4:51 PM
Subject: Re: [PSUBS-MAILIST] A Solution
At first glance yes, it does look just like the LRT barge, but
deceptively simpler.
It's a grated platform, over I beams, straddling the
pontoons. Once the pontoons would be flooded, that structure would act as ballast
for the floats above. This is directly stolen (borrowed) from hydrohoist.
That's also why I drew two cg's, if you have to lower the cg to
position 2 for surface running stability, it would be a relatively simple
affair of calculating how much weight to suspend (permanently) between the I
beams.
Caveat....as Jay points out, calm water situation required, so no
Haulover Inlet for me. I would be strictly limited to whatever would be in
range of the Stilts Ville channel, or whatever similar situation i can find.
Our summers are pretty flat eh?..... Got yourself caught with a boomer
line heading your way this afternoon ??? Leave the LRT flooded down to it's
floats on the hook, stand off the sub likewise on its own hook, and wait
it out aboard the support boat. Things seem to get even "flatter"
after those little summer squalls.
Bit of a chop kicked up since this morning eh???.....drag
everything back inside to still waters and load up!
This limits you Vance, but you know the areas I'm talking about. This
little (LRT), if it proves mathematically viable, (and I will check that
when I can)....along with that little straight sided houseboat barge,
translates to margaritas and starlit nights for weeks at a time! :)
From: vbra676539@aol.com
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] A Solution
Date: Mon, 06 Nov 2006 13:59:47 -0500
Joe, Is it a barge or a boat? If you're going to tow it
anyway, then you might want to put the generator/compressor on your tow boat.
Use some high pressure bottles on the tow raft to blow ballast, and
recharge from over there where the cold beer is. Vance
-----Original Message-----
From: joeperkel@hotmail.com
To: personal_submersibles@psubs.org
Sent: Mon, 6 Nov 2006 1:38 PM
Subject: RE: [PSUBS-MAILIST] A Solution
Incidentally.....this is not fully submersible as the LRT
barge, it is semi-submersible. The level of upper flotation is set to float the
sub off the deck by (X)"....(better be a damn nice flat day too)!
If this proves mathematically stable enough to be viable,
you would launch this from a standard trailer, in "skinny water",
then tow to the dive site, just like the LRT barge, then vent down the
pontoons. Your 1500w generator, blower and other goodies stay dry above on
top of either aluminum, or composite foam filled floats.
From: "Joseph Perkel" <joeperkel@hotmail.com>
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] A Solution
Date: Mon, 06 Nov 2006 17:53:18 +0000
I seem to keep coming back to this particular solution,
probably because as a mechanical guy...I can figure out how to build this. As a
pilot, I can visualize CG, W&B and forces at work, but what I am
not......is an engineer.
That lack of knowledge and my desire to build a successful
and uniquely spectacular project, is partly the impetus to pursue Naval
Architecture,.... but I am not there yet. I do not yet know how to
calculate for surface stability of floating bodies, but I do have an idea
of what's required.
the link below is in case the photo won't load
My post to Rick about width is what it is.....a guess.
Would this be unstable at 8.5' ???, the key is in the math. Somewhere in here
is the answer to this particular option. I'll let Jay speak to the sea sled
option as it's beyond my ability to envision it.
Thanks to everyone for the participation, the results are
self evident.
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