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To change this template's initial visibility, the |state= parameter may be used: {{Vanguard class submarine | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{Vanguard class submarine | state = expanded}} will show the template expanded, i.e. fully visible.
[[Category:Fleet submarine templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Fleet submarine templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
To change this template's initial visibility, the |state= parameter may be used: {{Oscar-class submarine | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{Oscar-class submarine | state = expanded}} will show the template expanded, i.e. fully visible.
[clarification needed] This design is the most resistant to compressive stress and without it no material could resist water pressure at submarine depths. A submarine hull requires expensive transverse framing construction, with ring frames closely spaced to stiffen against buckling instability. No hull parts may contain defects, and all welded ...
Due to the combination of design and construction problems, historian Clay Blair judged that "the XXI could not have made a big difference in the Battle of the Atlantic. [17] U.S. Navy diagram of a Type XXI U-boat. Note the teardrop-shaped fairing for the large hydrophone array beneath the bow and the wasp-waist pressure hull.
To change this template's initial visibility, the |state= parameter may be used: {{British S class submarine | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{British S class submarine | state = expanded}} will show the template expanded, i.e. fully visible.
To change this template's initial visibility, the |state= parameter may be used: {{James Madison class submarine | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{James Madison class submarine | state = expanded}} will show the template expanded, i.e. fully visible.
Sail of the French nuclear submarine Casabianca showing the diving planes, camouflaged masts, periscope, electronic warfare masts, door and windows.. In naval parlance, the sail (American usage) or fin (British/Commonwealth usage) (also known as a fairwater) of a submarine is the tower-like structure found on the dorsal (topside) surface of submarines.