With GWX and positive buoiancy at 2 knts the boat is always a few meters up compared with ordered depth. 2 meters at periscope depth, and 20 or more at +100
For example, i´m at periscope depth and i want dive to 100 meters at 2 knts. this could take a long time and it only reach 80 meters, for 100 metters i have to set 120 meters.
for have the correct depth you have to run at 3-4 knks or more making difficult dive silent near destroyers or scorts.
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But this ship can't sink!...
She is made of iron, sir. I assure you, she can. and she will. It is a mathematical certainty.
Strength and honor
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