A few years ago I read an article about an RC model of the Seaview. The builder/operator stated that the 'Cadillac fins' created instabilities.

remember that windows were supposed to be made of transparent steel, invented by adm Nelson called Herculite

• darkness_surroundz
  That's what it said in the novel. But in the first season episode
  The Saboteur (1965)
  , Admiral Nelson says the windows are made of some kind of plastic.

remember that windows were supposed to be made of transparent steel, invented by adm Nelson called Herculite

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I used to look at the arrangement of Seaview's fins in the stern, how they were at 2, 4, 8, and 10 o'clock, as opposed to being at 12, 3, 6, and 9 o'clock, and I had never seen a real sub with fins like that, and didn't think it would work.
But the Germans now have an advanced non-nuke sub, the 212A, which has the stern fins in that arrangement:
http://www.westbourne-model.co.uk/acatalog/212_total3_400 (1).jp g
Turns out the sub can maneuver in shallower water that way, which is an advantage in spy missions.

Also when you go over 700 feet under the Ocean it's almost always pitch black. Jaques Cousteau once said he sat inside a window compartment that opened to the sea in one of his voyages and said there was nothing to see for HOURS. The open ocean was a dessert, was how he described it.

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