Ray:
Is there somewhere we can see photos of this?
-- NP
From: Ray Keefer <psubs2001@yahoo.com>
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Launch Retrieval Transport
Date: Mon, 6 Nov 2006 12:50:49 -0800 (PST)
>Hi,
>
>The best launch and retrieval method that I saw at the
>2006 PSUBS Convention was Alec Smyth's telescoping
>tounge on his trailer.
>
>Yes a cable can be used to back a trailer into the
>water. That is until the trailer hits a bump or rock.
>With a trailer tounge the tow vehicle can push the
>trailer further out when gravity fails you.
>
>For retrieval, once the trailer is out in the water,
>either method works well.
>
>Regards,
>Ray
>
>
>
>
>
>--- 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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