Quote Originally Posted by Cippee View Post
The subs were able to dive to an estimated 4000 feet deep. Our best subs today barely hit 2000. The soviets only made a couple out of titanium because of the insane cost.
Imagine a building large enough to weld a sub hull completely purged with argon !! That's how they did it.. The welders wore contained suits that supplied their air and carried away their exhaust.. The United States wouldn't even consider doing that at that time and damn sure not today!! Those subs are still very classified! and will probably always remain that way