[PSUBS-MAILIST] Inflatable sub support

Mon Aug 8 03:42:05 EDT 2016

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 <
> 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 <
> 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 <
>> 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 <
>> 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 <
>>> personal_submersibles at psubs.org>
>>> *To:* Personal Submersibles General Discussion <
>>> 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 <
>>> 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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