<div>Hi Jon,</div>
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<div>Last time i ran the K350 on the spreadsheet, i got full collapse at something like 1100ft. From you comment there, maybe ive got it wrong? <br><br></div>
<div class="gmail_quote">On 24 October 2013 16:18, Jon Wallace <span dir="ltr"><<a href="mailto:jonw@psubs.org" target="_blank">jonw@psubs.org</a>></span> wrote:<br>
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<div><br>That must be due in large part to whatever is requested by the builder. I believe ABS requires a sub only sustain 1.25 times the pressure of the requested rating however George appeared to feel better with a larger safety margin, 2x (+ or -). If you run the numbers on the K350 for example, you'll see that it theoretically (by the numbers) survives to 800 feet or so.<span class="HOEnZb"><font color="#888888"><br>
<br>Jon</font></span>
<div class="im"><br><br><br>On 10/24/2013 10:38 AM, <a href="mailto:vbra676539@aol.com" target="_blank">vbra676539@aol.com</a> wrote:<br></div></div>
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<div><font style="BACKGROUND-COLOR:transparent">PC-8 has 3/8" wall thickness on the hull cylinder, the same as the 600, but was rated 200 feet deeper by ABS, even though it has a larger radius (21" as opposed to 18"). The ring stiffeners on the 8 are external and the conning tower larger. Makes you wonder what the deal is for figuring operating depth. Perry went to half inch for PS-2 which was the same boat but rated at 1000'. Hmmm.</font></div>
<div>Vance</div></font><br></blockquote><br></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br>
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