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The W5 Series: Higher-powered speakers that were received incredibly well when released in 1987. [citation needed] The W6 Series: Made for higher sound quality. W7: JL's top-of-the-line subwoofer featuring six now expired, patented technologies. Available in 8-inch, 10-inch, 12-inch, and 13.5-inch woofer sizes.
A long-range acoustic device ( LRAD ), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely high decibel capacity (up to 160 dB measured at one ...
47-foot Motor Lifeboat. The 47-foot MLB is the standard lifeboat of the United States Coast Guard (USCG). The 47′ MLB is the successor to the 44′ MLB. [ 5] At Station Chatham where the new 47-foot boat would draw too much to get over the bar, the 42-foot Near Shore Lifeboat was designed to replace the 44' MLB. [ 6]
Marine grade stainless alloys typically contain molybdenum to resist the corrosive effects of NaCl or salt in seawater. Concentrations of salt in seawater can vary, and splash zones can cause concentrations to increase dramatically from the spray and evaporation. SAE 316 stainless steel is a molybdenum - alloyed steel and the second most common ...
A 25-foot (8 m) Defender A-class boat from Maritime Safety and Security Team 91106 in New York Harbor. The Defender class utilizes a rigid deep-V hull constructed of marine grade aluminum. While similar in appearance to the sponson of a rigid-hulled inflatable boat the Defenders' collar is actually made from rigid polyethylene foam.
The special warfare combatant-craft crewman insignia is a Navy qualification badge. First proposed in 1996, an initial version was approved for wear in 2001. On 19 August 2016, the original insignia was replaced with three insignias that indicate qualification level: SWCC Basic, SWCC Senior, and SWCC Master.
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