RE: [PSUBS-MAILIST] Launch Retrieval Transport

[Jim Pesanka <jpesanka@yahoo.com>]

You're welcome, Joe.

 

 

Joseph Perkel <joeperkel@hotmail.com> wrote:

Jim,

Thanks for contacting Pat. His response validates many of the things
discussed in the thread....very productive!

Joe

>From: Jim Pesanka
>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 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"
>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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