<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div>Carsten,</div><div> </div><div>Thank you that is particularly helpful, the "J" trap </div><div> </div><div>I think Vance's earlier suggestion of ending with a simple head and then shaping the aft end holds up as the best way to proceed. I'll make the cone a soft tank, material and attachment choices now on the table.</div><div> </div><div>Thanks!</div><div> </div><div>Joe</div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> On Wednesday, May 7, 2014 5:35 PM, "Carsten Standfuß " via
Personal_Submersibles" <personal_submersibles@psubs.org> wrote:<br> </font> </div> <div class="y_msg_container"><div id="yiv0484433497"><title>E-Mail Software 6.0</title><div><font size="2" face="Courier New"><br clear="none">Hi Joe the Seehund has some quite
funny system. <br clear="none"><br clear="none"><font size="3" face="Times New Roman">01)
No
there is no double hull in the aft. <br clear="none"></font><br clear="none"><font face="Times New Roman"><font size="3">02) Yes both dive tanks has the
vents on the
aft and highest point for quick diving. From command "dive" to get
underwater
was 10 seconds. <br clear="none"></font></font><br clear="none">03) The j trap is the outlet
of the
blow air line. <br clear="none"></font><br clear="none"><font size="2" face="Courier New">The
Seehund
surface the following way: <br clear="none"><br clear="none"></font>Close vent vale, blow a little
compress air to the blow out line, until the diesel snorckel surface.
Drive the
diesel with the main e-motor as compressor and blow the dive tank with
this gas
complete. out.
<br clear="none"><br clear="none">Another way was : (mostly use by the
crew but more or less ilegal : Run the boat dynamicly to the surface ,
start the
diesel and blow the tanks with the exhaust gas. <br clear="none"><br clear="none">Both ways were
developt
to safe on compress storage gases. <br clear="none"><br clear="none">04) No idea. <br clear="none"><br clear="none">vbr
Carsten<br clear="none">
<br clear="none"> rkel via Personal_Submersibles"
<personal_submersibles@psubs.org> schrieb:
<div id="yiv0484433497yqt59595" class="yiv0484433497yqt6697123574"><blockquote style="padding-right: 0px; padding-left: 5px; margin-right: 0px; margin-left: 5px; border-left-color: rgb(0, 0, 0); border-left-width: 2px; border-left-style: solid;">
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14pt; background-color: rgb(255, 255, 255);"><div>As an example of my delving into this particular subject, I am
having a bit of trouble trying to understand the nature of the aft
diving tank (No.1) on the original Seehund. Understanding this
well, is key to an appropriate attempt for a viable
facsimile.</div><div><br clear="none"></div><div>I've attached an image of where I'm
unclear. I suspect that the uppermost volume of this tank
was encased in what looks like a double hull void, but I can not quite
confirm this. Also in question are the following with my analysis,
supposition or questioning.</div><div><br clear="none"></div><div><br clear="none"></div><div>1)
Is this a double hull in this aft conical section? (Raising
CB, lowering CG)</div><div>2) Position of the vent
valve? (Is this due to dive angle?)</div><div>3) "J"
trap nature of bottom of assembly in keel section of
tank? (Anti-syphon?)</div><div>4) Coiled hose assembly
in section view?? (completely at a loss
here?)</div><div><br clear="none"></div><div>Comment's and suggestions are sincerely
appreciated. What's on my mind is the temptation and viability of
reproduction in reduced scale. Sea Hunter's lines are pleasing and close
to scale in section @ 36"OD for the hull, 24" for the CT/Sail assembly
and No. 14 pipe for the torpedo/battery pod assemblies. (Can get away
with No. 12 as well).</div><div><br clear="none"></div><div>Cliff's wonderful .xls
requires that I draw up an accurate model first in order to simulate
ballasting.</div><div><br clear="none"></div><div>Joe</div><div><br clear="none"></div></div>
</blockquote></div>
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