US Navy Finally Tests It Most Advanced Autonomous Submarine The MANTA!
24:56
Engineers Can't Believe This Mechanism Works
16:24
Why China is Terrified of US New Manta Ray Submarine
15:38
How US Massive Submarine Breaks Through Thick Ice to Resurface in the Arctic
27:54
AMAZING INVENTIONS THAT WILL BLOW YOUR MIND
19:20
The insane machine that conquered Antarctica for the USSR - the Kharkovchanka
16:56
Nicaragua's $50BN Panama Canal Rival
18:30
The Manta Ray: How America's Futuristic Underwater Drone will Change Warfare.
15:11