From: Jim Pesanka <jpesanka@yahoo.com>
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Launch Retrieval Transport
Date: Sun, 5 Nov 2006 13:30:19 -0800 (PST)
Hello Psubbers!
Yesterday, after this thread had developed somewhat, I gave Pat a call
to say that I and others were exploring these various concepts. Pat was
rather busy at that moment, but did say he would try to upload something
addressing the questions I posed. Today, I received this link:
http://www.vulcaniasubmarine.com/NM%20TRAILER%20PICS.htm
Cheers!
Jim
Nomdae Plume <nomdae@hotmail.com> wrote:
Hey Joe:
Pat Regan had an interresting solution to the problem: He attached a 50
foot cable to his trailer and was able to keep his van high on the launch
ramp while moving his sub into deeper water. You can see this in action
at:
http://www.vulcaniasubmarine.com/TESTING%20THE%20NAUTILUS%20MINISUB.htm
The draft on my sub is going to be less than three feet when surfaced,
so I'm not too concerned at this point.
-- NP
---------------------------------
From: "Joseph Perkel" <joeperkel@hotmail.com>
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Launch Retrieval Transport
Date: Sat, 04 Nov 2006 15:31:31 +0000
I would like to open a discussion for the group to brainstorm a
common problem.
In discussions with several members recently, the issue of trailer
launching a 2 ton deep draft submersible is weighing a bit on my mind. The
image of backing the thing in far enough to "get stuck" and still not float
free, or worse...launching the vehicle as well, has real potential.
One member has mentioned to me recently, that as little as 12" decreased
draft, would really make a tremendous difference. Saddle tanks alone, may
not be enough to do the job.
So...some folks in Hawaii, came up with the LRT barge........
http://www.photolib.noaa.gov/nurp/nur07523.htm
A rather ingenious. but impractical solution for psubbers as it requires
diver support, and fully submersible would require increased complexity.
However, it did prompt me to think of these little guys...........
http://www.springsdock.com/images/springs/SpringsNewPontoonBoat_M.jpg
These are available on the used market in various states, but our
interest would be the floats, and possibly the deck. But, putting a two ton
submersible on this deck would make it unstable, so my thoughts are
to...reverse the deck (under slung)... cut flood ports in the bottoms, and
attach flotation topside...essentially turning these pontoons into MBT's.
Blowing to be accomplished by battery powered centrifugal blowers.
This could be potentially used only for launching and retrieval in the
calm waters of the ramp area, then reload it onto the trailer and tow the
sub conventionally.
Here are the problems that I can foresee here, and would like discussion
on improvements or otherwise unforeseen circumstances.
1) Width limited to 102" for legal towing without permits.
2) Width limit may limit usable space between pontoons in the described
configuration.
3) Road towing stability
Sometimes the simplest solutions elude you, so I'd like to see what the
group can come up with here.
Joe
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