[PSUBS-MAILIST] Sub launch musings

[Douglas Suhr via Personal_Submersibles]

I'm quite keen on a small pontoon gantry design that will launch and
recover with limited draught, provide plenty of flotation and
stability for entry/egress from the sub and would reduce transit time
to and from remote dive sites. I'm working on a design that will
telescope horizontally, thus facilitating a variable breadth of the
'toons (for added stability on water, ease of travel on road). Still,
I'm afraid open ocean operations will remain a formidable challenge. ~
Doug

On 2/15/17, T Novak via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> The A-frame crane would not likely have sufficient reach.  They usually are
> used on board ships to lift a sub out over the transom.  The same with
> knuckle boom cranes, like the ones used to launch the Mir twins.  These are
> used just to launch over the side of the ship.
>
>
>
> Hank has it right with a barge mounted crane.  The barge can be launched in
> much shallower water while holding the sub than the sub launched alone.
> With a pontoon or moon pool barge even a gantry crane would work.
>
>
>
> From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
> On Behalf Of Brian Hughes via Personal_Submersibles
> Sent: Wednesday, February 15, 2017 5:40 PM
> To: personal_submersibles at psubs.org
> Subject: Re: [PSUBS-MAILIST] Sub launch musings
>
>
>
> Or ... an A frame crane mounted on the back of a flatbed. Can you back down
> a ramp far enough for sufficient water when swinging it off the back? I like
> the idea of one vehicle for travel.
>
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