Noun
pressure hull (plural pressure hulls)
A secondary hull in a submarine, inside the main outer hull, that withstands the outside pressure and has normal atmospheric pressure inside.
A " conning tower " was a feature of earlier designs: a separate pressure hull above the main body of the boat that allowed the use of shorter periscopes. Source: Internet
Building a pressure hull is difficult, as it must withstand pressures at its required diving depth. Source: Internet
It was then possible to isolate the noisy diesel engines from the pressure hull, making the submarine quieter. Source: Internet
It would have had a much stronger pressure hull, with skin thickness up to 28 mm, and would have dived twice as deep as the previous VIICs. Source: Internet
Note the teardrop-shaped fairing for the large hydrophone array beneath the bow and the figure-eight pressure hull. Source: Internet
Officially, the standard tonnage was convert, however.sfn The U-boat had a total length of convert, a pressure hull length of convert, a beam of convert, a height of convert, and a draught of convert. Source: Internet