I found this Kittrege type sub near me in Sandpoint, Idaho in from of a business owned by Don Cox.
http://img277.imageshack.us/img277/7871/skittregekm250suboi2.jpg
From what I can gather the sub is owned by Don Cox who had it in Alaska for a time. Has any one here seen this sub before or worked on it??? I've never seen a Kittrege type sub with a acrylic type dome hatch. I wouldn't be to surprised if there was, but I thought it was interesting none the less. It's obviously been retired, but it was cool to see. I'm going back soon to see if I can talk with the owner Don. They run a log salvage business bringing old logs up from the bottom of Lake Pend Oreille. I have more pics if people are interested in some of the design details.
Brent Hartwig