What capabilities must a dual radar system on tankers of 10,000 GT and above have?

A dual radar system on tankers of 10,000 gross tons (GT) and above is required to possess both short-range and long-range capabilities to ensure effective navigation and safety. This multi-range functionality allows the vessel to monitor nearby surroundings as well as distant objects or threats, which is critical in maintaining situational awareness, especially in busy or challenging maritime environments.

The inclusion of a true north feature is also important, as it helps in ensuring that the radar presentation aligns correctly with the vessel's heading and the actual north direction. This alignment is vital for accurate navigation, collision avoidance, and operational efficiency, especially when integrated with other navigation systems.

Having both short and long-range capabilities, along with a true north feature, ensures that the crew can make informed decisions based on comprehensive radar data, thus enhancing the overall safety of the vessel during operations.