human
How do they steer the vessel down here under the sea?
gpt
By the gyrocompass, answered Bill Witt, pointing to where Executive Officer Binns and Commander McClure stood in the conning tower.
human
We are running blind down here, except that the skipper knows from his compass which direction we are going, and he has charts that tell him the depth of the sea at this point. They know the longitude and latitude and can easily determine on their maps and charts just where we are.
gpt
How deep down can we go?
human
Most of the boats have to be tested at a depth of two hundred feet before they are accepted by the government from the builders, replied Bill.
gpt
But you can bet your life we don't often go down that far. When we do, the water is oozing through the thin steel hull and dropping in globules from the sides and top of the vessel. From sixty to a hundred feet is our average plunge.