[PSUBS-MAILIST] Inflatable sub support

Mon Aug 8 13:39:04 EDT 2016

Alan / James / Dave, all great suggestions, thanks for the ideas! As much
as we could all sit here and spec out our dream tender/support boat, I
think you guys are wise to suggest the KISS method in one way or another.

I probably favor the idea of starting with a two hulled (cat/party barge)
design the most, but it will depend on what is available for cheap at the
time we go to buy :) ~ Doug

On Mon, Aug 8, 2016 at 11:28 AM, David Colombo via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Doug, I remember the tow out if the snoopy in the keys. It seems to me
> that bases upon the number of used boats in the area, I'd buy and
> fiberglass boat for just the bow. Get out the Sawzall cut off what I need,
> weld up a cradle that could link to hull of snoopy, use Alans ideal of a
> inner tube, but use it as an expandable cushion between fg hull and snoopy.
> Your then ready to tow.
> David Colombo
> On Aug 8, 2016 12:43 AM, "Douglas Suhr via Personal_Submersibles" <
> personal_submersibles at psubs.org> wrote:
>
>> 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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>>>>>
>>>>>
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