[PSUBS-MAILIST] Hull diameter, and other musings

[Joe Perkel]

Boy I tell you, these little vignettes into life with a PSUB are driving home the realities of compromise. Thanks for the insight Greg.
 
The Nektons have a nice shape for towing and a reasonable and workable compromise on volume, something to consider for emulation with regard to diameter limited to say 42". My problem is that I very much like the configuration of research submersibles with all of their goodies hanging out in the wind,.. so to speak.
 
I would want a significant night dive, photography, video, and light recovery capability. This does not lend itself readily to streamlining, so I am wondering lately if a quick-release hydrodynamic FRP bow shell should be considered. 
 
I'm thinking that I could have the environmental issues solved by the inclusion of AC. 
 
Where do you dive Proteus Greg? Is the name a nod to it's namesake in the 66' film Fantastic Voyage?
 
Joe
 


________________________________
From: greg cottrell <jgcottrell2002 at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Monday, October 7, 2013 9:35 AM
Subject: [PSUBS-MAILIST] Hull diameter



The hull diameter on Proteus is a comfy 51" and it certainly has its benefits. I've had three people aboard the sub for more than an hour and it was very comfortable. 
 
But there are also downsides. First, It does not tow very well at all. Some days were spent  towing it to get to the dive site for hours and it can use up the whole day towing instead of diving. The other problem is the amount of drought- on more than one occasion I trailered the sub to a new location just to find that the ramp wasn't deep enough to float the sub off and had to pack up and go home. Not a fun day!
 
If you go for a large diameter, pay more attention to streamlining and some method of getting it on and off the trailer in shallow water.
 
Greg
 
 
 


________________________________
From: Jon Wallace <jon.wallace at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Sunday, October 6, 2013 1:39 PM
Subject: Re: [PSUBS-MAILIST] Dive report - Pickles Reef





Larger diameter for sure.


________________________________
From: Joe Perkel <josephperkel at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Sunday, October 6, 2013 10:36 AM
Subject: Re: [PSUBS-MAILIST] Dive report - Pickles Reef



....and given a choice between lengthening or widening for increased interior volume, (keeping in mind tow-ability and trailer-ability)
 
What is the general consensus?
 
Joe


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