<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Sean,</div><div>50% of displacement sounds pretty good. Idabel weighs 9000 pounds and has to have some foam. It would be cool to see something a ton lighter with more elbow room and even more depth capability with no syntactic. Not sure if it's possible, but with care, it might be close. All the external shell and tankage would have to be fiberglass or aluminum to keep the weight down, one supposes, but with modern batteries...who knows.</div><div>Vance<br><br>Sent from my iPhone</div><div><br>On Apr 10, 2014, at 1:20 AM, "Sean T. Stevenson" <<a href="mailto:cast55@telus.net">cast55@telus.net</a>> wrote:<br><br></div><blockquote type="cite"><div>
<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type">
<div class="moz-cite-prefix">On 2014-04-09 23:06, <a class="moz-txt-link-abbreviated" href="mailto:vbra676539@aol.com">vbra676539@aol.com</a>
wrote:<br>
</div>
<blockquote cite="mid:8D12291BEED6714-2094-464A8@webmail-va016.sysops.aol.com" type="cite"><font color="black" face="Arial, Helvetica,
sans-serif" size="3"><font class="Apple-style-span" size="3">
<div><font class="Apple-style-span" size="3">Hank</font></div>
<div><font class="Apple-style-span" size="3"><br>
</font></div>
The spheres at Perry were not spun, but fabricated much as the
DW hulls are done using pressed segments. In the thicker
material, it is very difficult to hold a nominal thickness
without going really heavy and then machining the result.</font>
<div><font class="Apple-style-span" size="3"><br>
</font></div>
<div><font class="Apple-style-span" size="3">Hank, is that
figure for the .75" thickness or the 1.25"? Displacement is
something like 7250# in seawater (6'OD). I would hope for a
little better payload out of that than...what, less than
20%? Something like that.</font></div>
<div><font class="Apple-style-span" size="3"><br>
</font>
<div><font class="Apple-style-span" size="3">Vance</font><br>
</div>
</div>
</font></blockquote>
<br>
<font size="3"><font face="Arial, Helvetica, sans-serif">Vance - </font></font>according
to ABS, I get a working depth of 1055.2 m for the 3/4" shell, and a
payload of 17000 N, or over 3800 lbs.<br>
<br>
Sean<br>
<br>
<br>
<cgebaceh.png><br>
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