Видео ютуба по тегу Miniature Submarine

Midget U-Boats: Germany's Tiny Submarines
Midget U-Boats: Germany's Tiny Submarines
Midget Submarines of WW2 - Small and Possibly Deadly?
Midget Submarines of WW2 - Small and Possibly Deadly?
Building a Lego-powered Submarine 4.0 - automatic depth control
Building a Lego-powered Submarine 4.0 - automatic depth control