USS Porter (DD-356)
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USS Porter was the lead ship of her class of destroyers in the United States Navy. She was the third Navy ship named for Commodore David Porter and his son, Admiral David Dixon Porter.
USS Porter on 19 April 1939
5-inch/38-caliber gun
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The Mark 12 5"/38-caliber gun was a United States dual-purpose naval gun, but also installed in single-purpose mounts on a handful of ships. The 38-calibers long barrel was a mid-length compromise bet
USS Porter (DD-356)
…Speed 35 knots (65 km/h) Range 6,500 nmi. at 12 knots (12,000 km at 22 km/h) Complement 194 Armament As built: 2 × Mk33 Gun Fire Control System 8 × 5" (127mm)/38cal SP guns (4×2) 8 × 1.1" (28mm) AA (2x4) 8 × 21"(533mm) torpedo tubes (2x4) Circa 1942: 1 × Mk33 Gun Fire Control System 8 × 5" (127mm)/38cal SP guns (4×2) 2…
Two Mk 30 single enclosed base ring mounts on USS David W. Taylor
Mk 12 gun assembly
Vertical Sliding Wedge Breech Block.
Drawing of the recoil and counter-recoil systems. The arrow shows the motion of the housing in the slide during recoil.