Re: [PSUBS-MAILIST] VBT's & The Apology

["Sean T. Stevenson" <cast55@telus.net>]

The term "military psub" is a bit of a non-sequitur.  Military vehicles have 
different objectives, different design criteria, and as you mentioned, 
different safety systems, etc.  The applicability of military designs to 
psubs is limited, but not non-existent.  The design of any sub which is 
intended to have a fast submerged speed lends itself to the streamlined 
military sub shape, regardless of its actual purpose.  In my own case, I am 
working on a concept which has this shape externally, but which is in 
complete compliance with ABS rules (and other civil regulatory agencies), and 
outfitted for a range of missions including science support, hydrographic 
survey, search and rescue / recovery, pipeline / cable inspection, salvage, 
diver operations support, videography, underwater archaeology, film industry 
rental and so on.  Not technically a Psub, but an example of military sub 
characteristics employed in a non-military context.  I don't see why a psub 
could not also incorporate some of the same design features, and in the 
context of a high speed sub with lockout capability, I don't see any way of 
avoiding it.

-Sean


On May 26, 2007 11:15:43 irox wrote:
> Wouldn't the SDV be at neutral bouyancy?  Otherwise it would
> just plummet to the bottom if it weight 2000 to 3000 pound submerged.
> Undocking a a neutrally bouyant object form another neutrally bouyant
> object won't change the bouyancy of either or require either to do
> any sort of bouyancy compensation.
>
> Are people concidering building military psubs with diver lockouts?
> Military subs are very different from civilian subs, lots of
> standard safety systems are omitted, because they are counter to
> main goals of a war-sub.  Things are done differently, people die,
> a lot.  While some lessons are useful for psubs, they might not be
> such a good general example for psubs/civil-subs.
>
> 2cents,
> Ian.



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