All questions
Distress threshold

A yacht is being driven onto rocks, cannot arrest the approach and needs immediate outside help. Which priority is appropriate?

Short answer

Mayday, because the danger is grave and imminent and immediate assistance is required

Priority follows the current danger, not the original fault label. With an uncontrolled approach to rocks and immediate help required, the Mayday threshold is met.

Quick check

A yacht is being driven onto rocks, cannot arrest the approach and needs immediate outside help. Which priority is appropriate?