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An example of a homemade unit. The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [1] or five [2] [3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.
1 x Rheinmetall Oerlikon Millennium Gun 35 mm CIWS [8] 2 x Denel Vektor GA-1 20 mm secondary guns; Missiles: 12 x VL MICA-M short-ranged surface-to-air missiles [9] 8 x Exocet MM40 Block III antiship cruise missiles [9] Torpedoes: 2 x WASS B515/3 triple-tubed torpedo launchers; WASS A244-S Mod.3 324 mm lightweight torpedoes [9] [10] Aircraft ...
An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
A new type of 4.5 inch gun with a longer 55-calibre barrel, it was designed in the 1960s for the Royal Navy's new classes of frigates and destroyers.The weapon, built by Vickers Ltd Armament Division, was developed by the Royal Armament Research and Development Establishment using the Ordnance, QF 105 mm L13 of the Abbot self-propelled gun as a starting point (it used electrical primers).
USCGC Hamilton (WMSL-753) is the fourth Legend-class cutter, also known as the National Security Cutter (NSC), of the United States Coast Guard.She is the fifth cutter named after Founding Father Alexander Hamilton, who was the first United States Secretary of the Treasury and in that position requested the formation of the United States Coast Guard (as the United States Revenue Cutter Service).
The shipyard was then taken over by the Confederate Navy, which was a severe blow to the Union, [8] and it was here that USS Merrimack was modified to become the ironclad CSS Virginia. [4] Today, Drydock Number One is still in operation, used primarily to service U.S. Navy vessels. [5]
The Bayonne Naval Drydock base was opened by the Navy in 1942 as a logistics (Bayonne Naval Supply Depot) and repair base, well connected to the transportation network of the Northeast Corridor. After the war the site became port for part of the Atlantic Reserve Fleet or the Mothball Fleet , Atlantic Reserve Fleet, New York and later a Naval ...
The 8"/55 caliber gun (spoken "eight-inch-fifty-five-caliber") formed the main battery of United States Navy heavy cruisers and two early aircraft carriers. United States naval gun terminology indicates the gun barrel had an internal diameter of 8 inches (203 mm), and the barrel was 55 calibers long (barrel length is 8 inch × 55 = 440 inches ...