RE: [PSUBS-MAILIST] Launch Retrieval Transport

["Joseph Perkel" <joeperkel@hotmail.com>]

Jay....

A very comprehensive, and well thought out pro and con list.......thank you.

In reading your pros and cons, I am redefining problems, to keep it straight 
in my mind, simply as down to two.....

1) "skinny" water launch

2) Dive site transport.

Road transport and surface support is taken care of by default (absolute) so 
in essence........the above two are the unresolved.

Now if as Vance notes, I have to chose....I'll take #1, and drag the sub to 
take care of #2, but it would appear that your sled idea as evidenced by IVC 
corp for SportSub....is quite a viable option for further consideration, and 
quite conveniently covers both.

I'm going to "float" this well deck idea around in my mind a bit, something 
like this pushed along by that little houseboat, (on flat days), is looking 
pretty good, (and affordable), as a surface support package.

This thread is proving quite productive.

Joe

> From: "Jay K. Jeffries" <bottomgun@mindspring.com>
> Reply-To: personal_submersibles@psubs.org
> To: <personal_submersibles@psubs.org>
> Subject: RE: [PSUBS-MAILIST] Launch Retrieval Transport
> Date: Sun, 5 Nov 2006 17:56:29 -0500
>
> Note:  Sent this last night but it appears to have not gone through or was
> restricted to size.  After multiple attempts on Joe's and my part to get
> this loaded, now breaking it into 4 parts.
>
>
>
> Part 3 of 4
>
>
>
>
>
> 9.     Dry dock trailer
>
> a)      Pros:
>
> i)        Lowers draft of submersible at launch
>
> ii)      Should negate ramp issues in S. Florida
>
> b)      Cons:
>
> i)        Still have to get to the channel and dive site
>
> 10. Hydrodynamic shaped sub hull
>
> a)      Pros:
>
> i)        Eases towing
>
> ii)      Should negate sub's tendency to oscillate back and forth under tow
> behind the tender
>
> iii)    Opportunity to increase size and reshape MBTs to reduce launching
> draft
>
> b)      Cons:
>
> i)        Does not address issues of ramp launching and recovery
>
> ii)      Requires a tender
>
> 11. Surface tender
>
> a)      Towing
>
> i)        Pros:
>
> (1)    Available to support the submersible in an emergency
>
> (2)   Can carry additional supplies to support multiple dives
>
> (3)   Can carry additional passengers to swap out on the surface
>
> (4)   Available for use in other applications
>
> ii)      Cons:
>
> (1)    Towing is slow and monotonous
>
> (2)   Sub can put an undue strain on submersible
>
> (3)   Tow line can part and submersible loss
>
> (4)   Doesn't address ramp launching/recovery issues
>
> b)      Mother ship (Kittredge's 40 ft. tender with stern ramp, a vessel
> with a knuckle crane, or s ship with an A-frame)
>
> i)        Pros:
>
> (1)    Increased support availability
>
> (2)   Increased range
>
> (3)   Faster time to dive site
>
> (4)   Increased linger time at dive site
>
> (5)   Available for use in other applications
>
> ii)      Cons:
>
> (1)    Requires a larger vessel significantly increasing costs.
>
> (2)   Doesn't address ramp launching/recovery issues
>
> (3)   Increased draft limits shore access
>
> (4)   Doesn't address ramp launching/recovery issues.
>
> (5)   Increased maintenance requirements
>
>
>
> Respectfully,
>
> Jay K. Jeffries
>
> Andros Is., Bahamas
>
>
>
> Mankind have a great aversion to intellectual labor; but even supposing
> knowledge to be easily attainable, more people would be content to be
> ignorant than would take even a little trouble to acquire it.
>   - Samuel Johnson





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