. . . . . . . . "1" . "Sperry Marine MK39 INS" . "Sperry Marine MK39 INS"@en . "SDN:L22::TOOL0885" . "false" . "Sperry Marine MK39 inertial navigation system"@en . "SDN:L22::TOOL0885" . . . "1" . "2015-06-17 10:53:15.0" . "accepted"@en . . . "2015-06-17 10:53:15.0" . "An inertial navigation system which uses a Ring-Laser gyro. It calculates, via dead reckoning, the position, heading, attitude and velocity. It is mainly used in naval ships. Heading acurracy: 3 Arcmin Sec (Lat) RMS and 7 Arcmin Sec (Lat) Peak. Position: 1.0 nm in 8 hr TRMS."@en . . . "SDN:L22::TOOL0885" . . .