Submarine Stuff

How does a periscope work? Answer!

How do submarine officers quickly calculate the firing angle of a torpedo? With the “Dumaresq”, a mechanical tool. This Site contains 3 videos explaining the theory behind the Dumaresq. (Link)

Besides, these are rare records of an US submarine-attack on a Japanese battleship and an oil tanker in WW2 (Link)

And last but not least high-end submarine models by Jess Montgomery.