[PSUBS-MAILIST] Inflatable sub support

Mon Aug 8 09:55:43 EDT 2016

Hi Doug,
Id thought about getting a small ish catermaran with an outboard on each
hull.  Construct some rails\mounts or even just ropes to tie the sub
between the hulls.  You could drive to the dive spot , get in from above
and recover the same way.

Possibility?

James

On 8 August 2016 at 10:38, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Doug,
> in the mean time maybe something like a truck inner tube
> could be temporarily fixed around the conning tower &
> inflated & deflated by a support diver. It could be stowed
> as a back up in case, as we experienced, you tow for hours
> & it's too rough to board.
> I think I have heard of something like that being done, more
> experienced members might shed a bit of light on that.
> Alan
>
>
> ------------------------------
> *From:* Douglas Suhr via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Monday, August 8, 2016 7:42 PM
> *Subject:* Re: [PSUBS-MAILIST] Inflatable sub support
>
> Yeah, I like the simple logistics/mechanics of a rig like you described
> here Alan. Let's face it, anything would be better than a full-on tow! I'm
> often big smoke/no fire when it comes to projects like these, but at the
> same time, we are going to be hurting in the Keys without something to make
> entry/egress safer and transit to/from dive locations more efficient. ~
> Doug S.
>
> On Sat, Aug 6, 2016 at 1:31 AM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Doug,
> Cliff was thinking about this issue a while back.
> Perhaps a purpose built hard fibreglass hull that conforms to Snoopy's
> lower hull,
> with an inflatable pontoon attached, but with no back section. ( an
> inflatable boat
> with the back missing.) Use an air pump to deflate & inflate it. It would
> probably
> require a winch up front to help the sub get fully on board. If it was
> strong enough
> you could trailer the sub on this inflatable base.
> It would increase the towing speed & make it easy to board in rough
> conditions.
> Alan
>
>
>
> Sent from my iPad
>
> On 6/08/2016, at 3:13 pm, Douglas Suhr via Personal_Submersibles <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> wrote:
>
> Alan, I like that idea (a "pump barge"). Whatever we determine will work,
> it's gonna have to deal with relatively rough seas. ~ Doug S.
>
> On Tue, Aug 2, 2016 at 9:56 PM, Alan via Personal_Submersibles <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> wrote:
>
> Doug,
> I have seen a number of inflatable pontoon systems for lifting boats
> above the water. They all used pumps to pump out the water.
> I wonder if there is merit in designing an inflatable pontoon that you
> could
> lower, & drive Snoopy on to, then fill with air & tow.  It would
> solve the problem of boarding in rough seas, as you could climb in while
> it was up on the pontoons. The pontoons would also make it easier to
> board without bashing your boat against the sub.
> You would need a large barge if you are looking at hoisting in to the
> water.
> It wasn't the easiest in perfect conditions in to your canal.
> I think they use a ballasted platform in Hawaii ( similar idea) Scott
> might confirm
> that as he has just been there.
> Alan
>
> Sent from my iPad
>
> On 3/08/2016, at 12:50 pm, Douglas Suhr via Personal_Submersibles <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> wrote:
>
> Good point Alan, wave height is an issue on more than one hand with Snoopy
> (as I'm sure you're aware).
>
> BTW, we're starting to look seriously into building or buying a barge for
> the Keys. We've got to get Snoopy out to the oceanside more quickly than by
> towing her. ~ Doug S.
>
> On Tue, Aug 2, 2016 at 6:42 PM, Alan James via Personal_Submersibles <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> wrote:
>
> Doug,
> sounds like a cunning plan!
> Be aware that it might work when the water surface is flat,
> but fail if there is too much of a wave.av
> I'm with Jon on having a descent surface communication system.
> Alan
>
>
>
> ------------------------------
> *From:* Douglas Suhr via Personal_Submersibles <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> *To:* Personal Submersibles General Discussion <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> *Sent:* Wednesday, August 3, 2016 8:29 AM
> *Subject:* Re: [PSUBS-MAILIST] OTS transducer location
>
> 'Sound' thoughts Jon... :) ~ Doug S.
>
> On Tue, Aug 2, 2016 at 4:25 PM, Jon Wallace via Personal_Submersibles <
> mailto:personal_submersibles at psubs.org <personal_submersibles at psubs.org>>
> wrote:
>
>
> Nothing wrong with Radio comms on surface, in fact you should have a VHF
> for ocean water anyway.  Depending upon the location of the transducer on
> the vessel, at the surface you may find you don't have enough water column
> to communicate effectively.  Test first.
>
> Jon
>
>
> On 8/2/2016 3:09 PM, Douglas Suhr via Personal_Submersibles wrote:
>
> Dad and I are planning to try a little experiment in regards to the
> mounting location of Snoopy's transducer array. The idea is to mount the
> array on a hinged whip behind the hatch. While she's on the surface the
> transducer will be under the waterline for surfaced communication with
> surface support (if the boat and sub are out of earshot of one another).
> When Snoopy submerges, the array's float lifts the mast erect over the sub,
> becoming the tallest part of the vessel while submerged.
>
> Just an idea, but we're keen to try it when we get the chance. One
> possible drawback is entanglement danger... we've been thinking a lot about
> that lately. ~ Doug S.
>
>
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