Navigation General · Fog Navigation
When navigating in fog with radar, the requirement to proceed at a 'safe speed' under the Rules means the navigator must consider, among other things:
- AOnly the engine's maximum RPM
- BThe state of visibility, traffic density, the radar's range and limitations, and the ship's stopping distance✓ Correct
- COnly the time of day
- DThe price of fuel
Explanation
Rule 6 lists factors for safe speed (visibility, traffic, maneuverability, stopping distance, radar characteristics and limitations, etc.). Rule 19 adds that a vessel detecting another by radar alone must determine if risk of collision exists and, if so, take avoiding action in ample time.
Authority: Navigation Rules, Rules 6 and 19
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