The Virginia-class submarine Massachusetts (SSN 798) is now pressure hull complete. The construction milestone signifies that all of the submarine’s hull sections have been joined to form a single, watertight unit. (Photo by Ashley Cowan/HII)
The Virginia-class submarine Massachusetts (SSN 798) is now pressure hull complete. The construction milestone signifies that all of the submarine’s hull sections have been joined to form a single, watertight unit. (Photo by Ashley Cowan/HII)