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<DIV>Thanks, Tim, if it works that well in your ambient, it should be fine for a
1ATM. </DIV>
<DIV> </DIV>
<DIV>And thanks again for bringing your SportSub to Bellingham. I had seen
numerous pictures of that model, but seeing it hands-on and hearing
your descriptions of the operational considerations was far more
enlightening.</DIV>
<DIV> </DIV>
<DIV>Jim T. </DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 10/29/2014 8:50:22 P.M. Central Daylight Time,
personal_submersibles@psubs.org writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2 face=Arial>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: #1f497d; mso-fareast-language: EN-US'>Dish
soap works fabulously, Jim.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: #1f497d; mso-fareast-language: EN-US'><o:p> </o:p></SPAN><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: #1f497d; mso-fareast-language: EN-US'>My
first dive with my semi-dry sub was spent running mostly by compass and
constantly wiping the interior windows. I wiped liquid dish soap on the
inside surface of the windows for the second dive and had no fogging.
Cheap and easy.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: #1f497d; mso-fareast-language: EN-US'><o:p> </o:p></SPAN><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: #1f497d; mso-fareast-language: EN-US'>Tim<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: #1f497d; mso-fareast-language: EN-US'><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-TOP: #e1e1e1 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 3pt; PADDING-LEFT: 0cm; BORDER-LEFT: medium none; PADDING-RIGHT: 0cm">
<P class=MsoNormal><B><SPAN lang=EN-US
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif'>From:</SPAN></B><SPAN
lang=EN-US style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif'>
Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <B>On
Behalf Of </B>via Personal_Submersibles<BR><B>Sent:</B> October-28-14 8:18
PM<BR><B>To:</B> personal_submersibles@psubs.org<BR><B>Subject:</B> Re:
[PSUBS-MAILIST] viewport questions<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Hi
Alec,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>I had
forgotten about using dish detergent. If I recall correctly it
was used on the inside of the dome for anti-fog also. Have to put that
on my checklist before I forget it again. And it will make the sub smell
"lemony fresh." Looking forward to seeing your
pics.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Thanks
much,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Jim
T.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>In a
message dated 10/28/2014 9:09:53 P.M. Central Daylight Time, <A
title=mailto:personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>
writes:<o:p></o:p></SPAN></P></DIV>
<BLOCKQUOTE
style="MARGIN-BOTTOM: 5pt; BORDER-TOP: medium none; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; PADDING-LEFT: 4pt; MARGIN-LEFT: 3.75pt; BORDER-LEFT: blue 1.5pt solid; MARGIN-TOP: 5pt; PADDING-RIGHT: 0cm">
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Hi
Jim, <o:p></o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>No
mesh and no flushing system, it just takes about two minutes to remove the
outer dome as its a few screws. This BTW has never been in the water, so
we'll see and learn when it does. Just off the top of my head, it's probably
about 8 inches of separation at the apex and tapers to an inch and a half at
the base.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>I
don't use Rain-X on the viewports, I use Joy detergent, which is a Dr. Phil
recommendation that does wonders. <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Best,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><BR>Alec<o:p></o:p></SPAN></P></DIV></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>On
Tue, Oct 28, 2014 at 6:00 PM, via Personal_Submersibles <<A
title=mailto:personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org"
target=_blank>personal_submersibles@psubs.org</A>>
wrote:<o:p></o:p></SPAN></P>
<BLOCKQUOTE
style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; PADDING-LEFT: 6pt; MARGIN-LEFT: 4.8pt; BORDER-LEFT: #cccccc 1pt solid; PADDING-RIGHT: 0cm; MARGIN-RIGHT: 0cm">
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Hi
Alec,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>What
is the average distance between the two domes? Do you have any type
of mesh etc. over the 1/4" holes to keep debris out? Do
you have some type of flushing system for cleaning the surfaces
between the two? Since that's an ambient space I'm guessing it
wouldn't take too long to remove the outer dome when you want to do a
thorough cleaning.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>All:
Have you been using Rain-X on your view ports and domes? A while
back I saw some ads for another hydrophobic product that claims to be
superior to Rain-X, but I don't recall the
brand.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Best
regards,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Jim
T.<o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>In
a message dated 10/28/2014 4:30:30 P.M. Central Daylight Time, <A
title=mailto:personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org"
target=_blank>personal_submersibles@psubs.org</A>
writes:<o:p></o:p></SPAN></P></DIV>
<BLOCKQUOTE
style="MARGIN-BOTTOM: 5pt; BORDER-TOP: medium none; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; PADDING-LEFT: 4pt; MARGIN-LEFT: 3.75pt; BORDER-LEFT: blue 1.5pt solid; MARGIN-TOP: 5pt; PADDING-RIGHT: 0cm">
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Hi
Vance, <o:p></o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Actually
it starts at 2" thickness, and at the time was the thickest dome Greg
had made. It was an iffy proposition, meaning he didn't know if it would
turn into sub jewelry or just a deformed glob of expensive material.
Luckily it came out virtually perfect. <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>My
hull is 31" OD, a little smaller than yours. The window is a 120 degree
segment, just under 27" OD. So the trick is how to span the gap between
the 27 inches and the 31 inches. In the original design, this bow window
also acted as a hatch, a la Deep Flight. I made a massive Al ring 31"
OD, which telescoped on linear bearings and four 1.25" bars, driven by
rams. With ensuing redesign, the need for all that disappeared because I
now have a coning tower, so I've dropped the bars and rams, and the seat
is now mounted to the hull very simply with four big bolts. It will make
a very handy big door into the sub for maintenance purposes, but is
overkill and the window could be mounted by using part of your existing
endcap and a permanently welded conventional
seat. <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>One
big decision is the window seat geometry. I like conical because PVHO
rates it for twice the life of square edge, but it requires fabrication
capabilities that Greg didn't have for the window and I didn't have for
the seat. So its a square edge for the simple reason that we could make
it that way. <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>I
should mention the Al ring actually has two domes on it, one inside the
other. The 27" dome is structural, and the outside dome is 31" and only
half an inch thick. The outside one is just for fairing, to protect the
structural dome from abrasion, and to mitigate collision damage. The
space between the two domes is free flooding, and there are 1/4" holes
around the edge of the outer dome to facilitate that. In a collision,
the water would squish out through the little holes, so the thing is
basically a shock absorber.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>As
for calculations, I will paste the window calcs below. It is really just
table lookups from PVHO tables, a simple cook book. The seat would have
to be calculated with FEA. I didn't have FEA, so I did like the Greeks
and Romans. You know why the Partenon is still standing? Try to do
engineering calculations using Roman numbers! It was too complex, so
they simply made everything massive. The seat is one integral piece of
aluminum of ridiculous proportions, and it backs into a 516 gr 70 ring
on the end of the hull that is an inch thick and two inches deep. I'm
pretty confident that ring isn't going wobbly before something else
does. <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Best,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><BR>Alec<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>-----------------
pasted ------------------<o:p></o:p></SPAN></P></DIV>
<DIV>
<H1><SPAN
style='FONT-SIZE: 14pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Viewport
Depth Rating per PVHO-1a-1997</SPAN><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p></o:p></SPAN></H1>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>The
following calculations and specifications are for a sperical sector
window with square edge, to include an optional O-ring
seal.<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">1) Determine Conversion Factor
(CF) </SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">Water temperature = 75
</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; COLOR: black">°</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black">F (tropical
conditions)</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">From Table 2-2.4, CF = 7
</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">2) Given actual fabricated
dimensions</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">t<SUB>min</SUB> =
1.73”</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">D<SUB>i</SUB> =
26.847”</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; COLOR: black">\</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black">t/D<SUB>i</SUB> =
0.064</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">Entering table 2-2.10 with STCP,
t/Di = 0.064</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">Solving for Critical Pressure =
3,460 psi</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">Since Short Term Critical Pressure
(STCP) = CF x P = 3,460 psi</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; COLOR: black">Solving for P,
P = 3,460 / 7 = 494 psi</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="COLOR: black"> <o:p></o:p></SPAN></P>
<P class=MsoNormal
style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; COLOR: black">\</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black"> Safe operating depth for window =
1,139 fsw</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'> <o:p></o:p></SPAN></P></DIV></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'>On
Tue, Oct 28, 2014 at 3:48 PM, via Personal_Submersibles <<A
title=mailto:personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org"
target=_blank>personal_submersibles@psubs.org</A>>
wrote:<o:p></o:p></SPAN></P>
<BLOCKQUOTE
style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; PADDING-LEFT: 6pt; MARGIN-LEFT: 4.8pt; BORDER-LEFT: #cccccc 1pt solid; PADDING-RIGHT: 0cm; MARGIN-RIGHT: 0cm">
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Alec,
<o:p></o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>I hope this is
still you.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>I've been
talking to Greg about a major retro-fit on my K-350--a full
hull-diameter dome segment viewport in place of the forward elliptical
head. He mentioned having built yours (the 1000' version) while we
were talking about thickness and whether to try and use something out
of Pete's junk pile.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>While we were
chewing the fat about this, he said that to the best of his
recollection, yours started at 1.5" thickness, and that he could build
it for me (maybe a 150 degree arc segment) for what I thought was a
very reasonable amount.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>My problem
(okay, one of my problems) is that I don't really know how to do the
calculations for these things. That said, I'm wondering if a partial
copy of yours might not do the trick for my application (it would be
tested much shallower, 500 feet or
thereabouts).<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>I don't know how
you feel about sharing that kind of thing, but I have a picture in my
head of an acrylic bow K-350 with some fairings and a Minn-Kota driven
Deepworker style propulsion system. I think it would make a great
little boat, and so if I can get the viewport and frame designed, then
it's going to be built.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>It's time to
play if I'm going to. So, what do you
think?<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Best
Regards,<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Vance
Bradley<o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><BR>_______________________________________________<BR>Personal_Submersibles
mailing list<BR><A title=mailto:Personal_Submersibles@psubs.org
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target=_blank>Personal_Submersibles@psubs.org</A><BR><A
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href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles"
target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><o:p></o:p></SPAN></P></BLOCKQUOTE></DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><BR><BR>_______________________________________________<BR>Personal_Submersibles
mailing list<BR><A title=mailto:Personal_Submersibles@psubs.org
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target=_blank>Personal_Submersibles@psubs.org</A><BR><A
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href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles"
target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><o:p></o:p></SPAN></P></BLOCKQUOTE></DIV></DIV></DIV></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><BR>_______________________________________________<BR>Personal_Submersibles
mailing list<BR><A title=mailto:Personal_Submersibles@psubs.org
href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR><A
title=http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles"
target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><o:p></o:p></SPAN></P></BLOCKQUOTE></DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><o:p> </o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><BR><BR>_______________________________________________<BR>Personal_Submersibles
mailing list<BR><A title=mailto:Personal_Submersibles@psubs.org
href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</A><BR><A
title=http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><o:p></o:p></SPAN></P></BLOCKQUOTE></DIV></DIV><BR><BR>_______________________________________________<BR>Personal_Submersibles
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