Northrop Grumman Corporation has supplied the navigation and communication systems for Royal Caribbean’s newest passenger cruise ship, Liberty of the Seas, which made its debut in May. The integrated bridge system (IBS) was installed by Northrop Grumman’s Sperry Marine business unit. Sperry Marine also supplied the bridge electronics for all of Royal Caribbean’s cruise ships, including Liberty’s sister ship, Freedom of the Seas, which entered service last year. The IBS is designed with multiple levels of redundancy and automatic backup systems for all critical components. The system includes multiple navigation radars, adaptive self-tuning autopilot, fiber-optic gyro heading reference system, Doppler speed logs, electronic chart display and information systems running on Sperry Marine’s proprietary Voyage Management System software, and a communication suite meeting the international Global Maritime Distress and Safety System requirements.