Probable Damage Functions for Mines.
NAVAL ORDNANCE LAB WHITE OAK MD
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The purpose of this study is to estimate the probable damage which will be done to ships by specified mine explosions, and to present available data in graphs and tables. On the assumption that the damage done to a ship by an underwater explosion is proportional to the solid angle subtended by the ship at the location of the explosive, approximate methods of calculating the probable damage factor are developed. This damage factor is defined statistically only and is intended to be proportional to the average damage done to vessels by identical specified explosions. It is normalized so that its value is unity for sinking conditions. Checks against observation are made and are found to justify the treatment. A probable damage target is also obtained, which is proportional to the probability that a ship, on a single passage, will fire a mine and experience an equivalent sinking as a result. These damage functions are presented in graphs and tables for a number of vessel classes. For each of the following classes the effects of a 600-pound charge and a 1200-pound charge of TNT are considered cargo vessels with beams of 30, 45, and 60 feet, light and heavy cruisers beams 60 feet, destroyers beams 36 feet, and battleships beams 100 feet.
- Underwater Ordnance