----- Original Message ----
From: Brent Hartwig <brenthartwig@hotmail.com>
To: PSUBSorg <personal_submersibles@psubs.org>
Sent: Sunday, January 27, 2008 7:45:27 AM
Subject: [PSUBS-MAILIST] Hydrodynamic Hatch Viewport Arrangement
Greetings Frank, Didn't you say it's your birthday? I was able to work up a CAD model of a hatch viewport arrangement, that would be pretty hydrodynamic and not a entanglement hazard. I made the retaining ring to be inset in the viewport seat. Also I nickel plated your hatch for you while you were sleeping. Lets just call it cabin fever, and leave it at that. ;)'
Here is my Frappr link, to seven model rendering pictures of your hatch with a conical viewport.
http://www.frappr.com/?a=viewphoto&id=4001713&pid=9062924
Regards,
Brent Hartwig