Title: Navigating a Submarine | Time and Navigation
Headings: Navigating a Submarine
Navigating a Submarine
Submarines used radio signals to correct their inertial navigation systems.
Navigating the USS Alabama
Ship’s Inertial Navigation System (SINS) Stable Platform and Housing Assembly
Innovations
Ship’s Inertial Navigation System (SINS)
How it Works
How Did the USS Alabama Navigate?

Content: GPS has now replaced both. Navigating the USS Alabama
The Alabama was built with three navigation systems: the ship’s inertial navigation system (SINS), a Loran-C receiver, and a Transit satellite receiver system for correcting the inertial system. It has since been fitted with a GPS receiver and the Trident II navigation system. Ship’s Inertial Navigation System (SINS) Stable Platform and Housing Assembly
The Alabama has three inertial guidance units. Manufactured by the Autonetics Marine Systems Division of Rockwell International (now Boeing), the SINS was installed on the boat in 1983 and removed in 2006 after over 60 patrols. Information about the ship’s position, speed, heading, and attitude were constantly transmitted from the SINS to the missile fire-control system. The boat’s exact position was required for launching ballistic missiles. 510-uss_alabama_-_dn-sc-85-07099.jpg
USS Alabama
The USS Alabama was outfitted with a SINS system for navigation. Credit: