Alarms and Indicators

For ECDIS Systems the IMO publication (Code on Alarms and Indicators. IMO-867E) applies. In accordance with this Code:

Alarm

means an alarm or alarm system which activates an audible signal, or a combination of audible and visual signals, indicating that a condition exists requiring attention by the user.

Indicator

means a visual display which provides information concerning the condition of a system or piece of equipment.

The following items should be detected by an ECDIS system automatically. When detected, an alarm and an indicating display should be activated.

• Traffic separation zone
• Traffic routeing scheme crossing or roundabout
• Traffic routeing scheme precautionary area
• Two-way traffic route
• Deepwater route
• Recommended route
• Inshore traffic zone
• Fairway
• Restricted area
• Cautionary area
• Offshore production area
• Offshore windfarm
• Areas to be Avoided
• Military practice area
• Seaplane landing area
• Submarine transit lane
• Ice area
• Channel
• Fishing ground
• Fishing prohibited area
• Pipeline area
• Cable area
• Anchorage area
• Anchoring prohibited area
• Dumping ground
• Spoil ground
• Dredged area
• Cargo transhipment area
• Incineration area
• Specially protected areas

 
Alarms or indications should be activated for the following:

Alarm

• "Largest Scale For" alarm
• Off-Track alarm
• Crossing safety contour
• Deviation from route
• Positioning system failure
• Approaching a critical point
• Change of geodetic datum

Alarm and/or Indicator

• Area with special conditions applying
• Malfunction of ECDIS

Indicator

• Information over-scale
• Larger scale ENC available
• Different reference system
• Route planning across safety contour
• Route planning across specified area
• System test failure