00731nam a22001577a 4500 12419 12419 230619b 1982 ||||| |||| 00| 0 eng d 0851744265 623.892 FRO Frost, A. Marine Gyro Compasses For Ships' Officers 1st ed. Britain Glasgow 1982 xix, 145p. Marine Gyro Compasses for Ships' 0fficers has been written to cover the syllabuses for all grades of Department of Trade certificates of competency for deck officers in the Merchant Navy. The first section of the text discusses the free gyroscope and its properties which enable it to be converted into an instrument which provides a north reference. BK 0 0 ddc 0 623_892000000000000_FRO 0 NFIC 15564 MU MU GEN 2023-06-19 623.892 FRO MPC6666 2025-03-17 BK Column-24