Hull Classification Symbol
The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration use hull classification symbols (sometimes called hull codes or hull numbers) to identify their ship types and each individual ship within each type. The system is somewhat analogous to a system of pennant numbers the Royal Navy and some European and Commonwealth navies (19 in total) use.
Read more about Hull Classification Symbol: History, National Oceanic and Atmospheric Administration, United States Navy Hull Classification Codes, National Oceanic and Atmospheric Administration Hull Codes
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“The symbol of perpetual youth, the grass-blade, like a long green ribbon, streams from the sod into the summer, checked indeed by the frost, but anon pushing on again, lifting its spear of last year’s hay with the fresh life below. It grows as steadily as the rill oozes out of the ground.... So our human life but dies down to its root, and still puts forth its green blade to eternity.”
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