Bridge Terminology
Page 9 of 11
Bridge Alarms
- General Alarms. Alarms are listed in order of priority. A higher priority alarm will override a precious alarm of lesser priority.
- Collision. Sounded in event of impending collision. Has precedence over all other bridge alarms. Switch is color coded YELLOW and shaped as a STAR. Set by the BOOW upon orders from OOD.
- Chemical. Sounded when chemical attack is eminent or detected. Switch is color coded GREEN and shaped as a SQUARE. Set by the BOOW upon orders from OOD.
- General. Sounded to call crew to general quarters. Switch is color coded RED and shaped as a CIRCLE.
- Helo Crash. Sounded in event of impending or actual helicopter crash on the flight deck. Switch is color coded GRAY and shaped as a LEVER. Set by the BOOW upon orders from OOD.
- FZ (Security). Consists of a bell and indicator lamp which provides an audible and visual indication of entry into a special weapons magazine when the system is energized.
- Gyro. Provides an audible indication of a casualty in the gyro system.
- Magazine High Temperature. Provides an audible and visual indication of high temperatures in a magazine.
- Magazine Flooding. Provides an audible and visual indication of flooding in a magazine.
- Sonar Contact. When initiated by sonar control, it alerts the bridge and CIC of a contact.
- Engineering Casualty. The 26 MC is used to provide direct voice communications with the bridge in case of a casualty.
- Missile Warning Alarm. Sounded when the fire control tracking radar detects a high speed inbound target.
- Carbon Dioxide Release Alarm (FR). Audible and visual alarm warning of carbon dioxide presence in specific compartments, such as the paint stowage locker, missile magazine, flammable storage areas, etc.
- Flooding Alarm (FD). Audible warning of flooding in specific compartments.






