In 1892, Battenberg invented the Battenberg Course Indicator, a relative velocity analogue computer device used by seamen to determine course and speed to steer for changes of position between ships.
2.
In this duty, carried out at New York City; New London, Connecticut; Newport, Rhode Island; and New Haven, she experimented with camouflage defense, tested the Bates Automatic Course Indicator, and experimented with various submarine detection devices, including the Sanborn Speed Indicator.
मोबाइल