What element must be included in a radar system for tankers under USCG regulations?

In accordance with USCG regulations for tankers, the inclusion of a true north feature in radar systems is significant because it enhances navigational accuracy. The true north feature enables operators to differentiate between true north and magnetic north, allowing for precise charting and course plotting, which is crucial for the safe navigation of tankers. This feature assists in avoiding potential collisions and groundings by providing accurate bearings related to the earth's geographic poles.

While other radar system features, such as alarms or reporting capabilities, may offer benefits in specific scenarios, the true north feature directly contributes to the fundamental navigational competence required for vessels operating in busy or challenging waterways. Understanding the difference between true and magnetic directions is essential, particularly in areas with magnetic anomalies that could lead to misinterpretation of a tanker's heading. Therefore, the presence of a true north capability is vital for ensuring compliance with safety regulations and for enhancing overall situational awareness for a vessel’s crew.