Title:SHIP'S MAGNETISM AND DEGAUSSING PART 3: SHIP'S TEMPORARY MAGNETISM [Main Title]
Film Number:DRN 86C
Other titles:
Summary: A Naval instructional film explaining how magnetic induction occurs in soft metal parts of a ship due to the Earth's magnetic field, which varies according to which direction the ship is moving. The effect on the ship's compass and the methods taken to compensate for this are shown.