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[PSUBS-MAILIST] OSS viewports
When you look at Bill's viewports (http://www.giffordmarineinc.com/sub/sub_5_16_03/Sub_5_16_03.html) you can see that he uses an acrylic disc bolted to a flange.
The Nekton subs use a similar method. The Delta is probably the most sucsesfull
small sub ever built. Yet i cannot find anything on them in the ABS or
Lloyds rules or in Stachiw's book.
It is a simple and cheap way to make the
viewports. Flanges can be bought of the shelf. No need for a big lathe and
no retainer-rings to make. Can anyone explane me why it is that these viewports
aren't more popular.
Thijs Struijs
The
Netherlands