Proper welds are difficult, as mistakes in the process can make titanium brittle — the last thing you'd want in a submarine's hull. Several boats' hulls had cracks, requiring costly and ...

The Soviet-era Alfa-class submarine was a groundbreaking, high-performance vessel that demonstrated Russian submarine ...

Australia operates a fleet of six Collins submarines, which have been recently beset by problems including hull corrosion.

Summary: The Alfa-class submarine, developed by the Soviet Union during the Cold War, was an innovative but problematic ...