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  2. 5-inch/51-caliber gun - Wikipedia

    en.wikipedia.org/wiki/5-inch/51-caliber_gun

    5-inch/51-caliber gun. 5"/51 caliber guns (spoken "five-inch-fifty-one-caliber") initially served as the secondary battery of United States Navy battleships built from 1907 through the 1920s, also serving on other vessels. United States naval gun terminology indicates the gun fired a projectile 5-inch (127 mm) in diameter, and the barrel was 51 ...

  3. List of United States Navy ratings - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States_Navy...

    United States Navy ratings are general enlisted occupations used by the U.S. Navy since the 18th century, which denote the specific skills and abilities of the sailor. Each naval rating has its own specialty badge, which is worn on the left sleeve of dress uniforms of enlisted personnel. U.S. naval ratings are the equivalent of military ...

  4. 5.1 surround sound - Wikipedia

    en.wikipedia.org/wiki/5.1_surround_sound

    The left and right surround speakers in the bottom line create the surround sound effect. 5.1 surround sound ("five-point one") is the common name for surround sound audio systems. 5.1 is the most commonly used layout in home theatres. [1] It uses five full bandwidth channels and one low-frequency effects channel (the "point one"). [2]

  5. BL 5.5-inch Mk I naval gun - Wikipedia

    en.wikipedia.org/wiki/BL_5.5-inch_Mk_I_naval_gun

    Naval history. 5.5-inch Mk I at National War Memorial Southern Command. This weapon was developed by Coventry Ordnance Works in 1913 and offered to the Greek Navy as the main armament for two new cruisers building at Cammell Laird. On the outbreak Of World War I the two ships were purchased by Britain as HMS Chester and HMS Birkenhead.

  6. 5-inch/54-caliber Mark 45 gun - Wikipedia

    en.wikipedia.org/wiki/5-inch/54-caliber_Mark_45_gun

    The 5-inch (127 mm)/54-caliber (Mk 45) lightweight gun is a U.S. naval artillery gun mount consisting of a 5 in (127 mm) L54 Mark 19 gun on the Mark 45 mount. [1] It was designed and built by United Defense, a company later acquired by BAE Systems Land & Armaments, which continued manufacture. The latest 62-calibre-long version consists of a ...

  7. List of active Royal Navy ships - Wikipedia

    en.wikipedia.org/wiki/List_of_active_Royal_Navy...

    The total displacement of the Royal Navy's commissioned ships is approximately 411,400 tonnes. The Royal Navy also includes a number of smaller non-commissioned assets. The naval training vessels Brecon and Hindostan can be found based at the Royal Navy stone frigates HMS Raleigh and the Britannia Royal Naval College, respectively.

  8. Naval Sea Systems Command - Wikipedia

    en.wikipedia.org/wiki/Naval_Sea_Systems_Command

    The Naval Sea Systems Command (NAVSEA) is the largest of the United States Navy's five "systems commands," or materiel (not to be confused with "material") organizations From a physical perspective, NAVSEA has four shipyards for shipbuilding, conversion, and repair, ten "warfare centers" (two undersea and eight surface), the NAVSEA headquarters, located at the Washington Navy Yard, in ...

  9. BL 13.5-inch Mk V naval gun - Wikipedia

    en.wikipedia.org/wiki/BL_13.5-inch_Mk_V_naval_gun

    L: 23,820 yards (21,780 m) at 20°. H: 40,600 yards (37,120 m) at 40° (World War II railway gun, with Super Charge) The BL 13.5 inch Mk V gun [note 2] was a British heavy naval gun, introduced in 1912 as the main armament for the new super-dreadnought battleships of the Orion class. The calibre was 13.5 inches (343 mm) and the barrels were 45 ...