Science Art: Torpille Moderne/Torpille Ancienne from Dreadnought ou submersible by Olivier Guihéneuc, 1916

from https://archive.org/details/dreadnoughtousub00guihuoftClick to embiggen

Two torpedoes, modern (as of 1916) and ancient. That’s about the limit of my French. The book is about naval warfare, and was published while World War I was going on, and at a time when submarines were still kind of science-fictiony. Actually, they still kind of are, aren’t they?

I guess these torpedoes are how a submersible would attack a dreadnought.

Dreadnought ou Submersible is available to read on archive.org, if your French is better than mine.