UNDERWATER ACOUSTIC INTENSITY MEASURING JIG FOR MARINE RESEARCH SHIP

摘要

PURPOSE:To enable measurement of noise in water in each position through control from a deck, by a method wherein a moving jig for vertical direction is elevatably situated to the side extension part of a support metal being movable in the longitudinal direction of a ship hull positioned on rails on a deck, and a hydrophone cradle is movably mounted on rockable rails for movement located below the moving jig. CONSTITUTION:A vertical moving jig 3 is elevatably supported to the side extension part of a support metal 2 being movable longitudinally of a ship hull along upper deck rails 1. Rails for movement of a hydrophone are rockably supported to the lower part of the jig 3 for vertical movement, and a hydrophone cradle 5 is movably mounted thereon. The jig 3 for vertical movement and the hydrophone cradle 5 are movable through control of a rope 15 from an upper deck. The acoustic intensity of underwater noise of a ship can be measured stereotically in a longitudinal direction, the direction of width, and the direction of depth from a deck, and safe and high-precise measurement is practicable.