Re: [PSUBS-MAILIST] Viewport

[MerlinSub@t-online.de]

Di = 27 inch or 686 mm (clear view) for 300 meter

s/d1 = 0,21 and 10° 
so s = Tickness = 0,21 x 686 = 144 mm or about 6 ich strong acrylic.

Outside Diameter of glas should be between 1,25-1,5 of Di 
= 34 - 40 inch. 

Calculate to Germaninscher Lloyds rules. 

Dome will be better..  0,034 x 27 = about 1 inch thickness. 

Best regards Carsten

"Øystein Skarholm" <skarholm@gmail.com> schrieb:
> Does anybody know if flat view ports can go as deep as 250m - 300meter.
> The view port size is off course critical here. I am thinking of a
> view port size approximately 27 inch.
> Where can I find material properties for strength calculation on acryl ?
> 
> What is the best material for view ports anyway.
> Hope somebody knows the answer or where to find the answer.
> 
> Thanks
> 
> --
> Vennlig hilsen
> Øystein Skarholm
> 
> 
> 
> 
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