Black Board Series Submarine Main Ballast Tank Operation staring your favorite submarine sailor Leroy. Dive into the critical world of submarine operations with our latest video, "Submarine Main ...

Shaped like an enclosed rowboat, the vessel included ballast tanks for stability and a system ... world's navies have long used highly developed submarines in military operations, scientists ...

There are three main challenges to building a submarine. These are the radio system, building a watertight enclosure, and having some sort of ballast tank to pump water into and out of.