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Function: Automatic tracking of ship information, Range: VHF radio range, Usage: Collision avoidance, traffic management

Function: Two-way voice communication, Range: up to 20 nautical miles, Usage: Ship-to-ship and ship-to-shore

Function: Voice and data communication, Range: Global coverage, Usage: Emergency communication, remote locations

Function: Long-range voice communication, Range: 150 to 400 nautical miles (MF), up to 3000 nautical miles (HF), Usage: Oceanic routes communication, weather fax

Function: Receive maritime safety information, Range: Up to 400 nautical miles, Usage: Navigational and meteorological warnings and forecasts

Function: Emergency distress signal, Range: Global coverage via satellite, Usage: Locating marine distress situations

Function: Object detection and navigation, Range: 1 to 96 nautical miles, Usage: Navigation and collision avoidance in poor visibility

Function: Radar-based location in rescue operations, Range: 1 to 5 nautical miles when at sea level, higher if elevated, Usage: Locating survival craft or distressed vessels

Function: Safety and emergency communication, Range: Global coverage, Usage: Ensuring ships can alert shore-based help regardless of location

Function: Monitoring and coordinating vessel traffic, Range: Local area coverage, Usage: Traffic management in busy waterways and ports

Function: Global identification and tracking of ships, Range: Global coverage via satellite, Usage: Safety and environmental monitoring

Function: Covert alert for security threats, Range: Global coverage via satellite, Usage: Anti-piracy and security threat alerts

Function: Subsurface object detection, Range: Varies with frequency, Usage: Fishing, underwater navigation, and obstacle avoidance

Function: Entertainment and information for crew, Range: Coverage varies by satellite service provider, Usage: Receiving television broadcasts on ships