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Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
A bollard is a sturdy, short, vertical post. The term originally referred to a post on a ship or quay used principally for mooring boats. ... [39] [40] [41] Gallery
Bollard pull is a conventional measure of the pulling (or towing) power of a watercraft.It is defined as the force (usually in tonnes-force or kilonewtons (kN)) exerted by a vessel under full power, on a shore-mounted bollard through a tow-line, commonly measured in a practical test (but sometimes simulated) under test conditions that include calm water, no tide, level trim, and sufficient ...
Bollard was awarded the Coast Guard Unit Commendation for service during the period of 2 July 1986 to 6 July 1986. [4] On 26 February 2015, Bollard was featured in a news story about Coast Guard ice breaking operations on National Public Radio. In January 2018, Bollard was damaged during icebreaking operations on the Connecticut River. [5]
1 × M240B machine gun (optional) [4] An MLB ready for deployment at Motor Lifeboat Station Morro Bay, California The 47-foot MLB is the standard lifeboat of the United States Coast Guard (USCG).
Each D839 propellant (smokeless powder) grain used for full charges for this gun was 2 in (51 mm) long, 1 in (25 mm) in diameter and had seven perforations, each 0.060 in (1.5 mm) in diameter with a web thickness range of 0.193 to 0.197 in (4.9 to 5.0 mm) between the perforations and the grain diameter. A maximum charge consisted of six silk ...
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