The submarine in war and peace; its developments and its possibilities (1918)
Lake, Simon, 1866-1945 · Philadelphia London : J.B. Lippincott Co. · leaf 292
feel any vertical motion of the sea even in the stormiestweather. I have found that such motion actually existsforty feet and more below the surface when the groundswell is deep. Of course, the submarine must rise to the surface fromtime to time in order to draw in fresh air to fill her…
Submarines (Ships)
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
