Night Identification and Mixed Drills

• Report a light's colour, rate or character, group, period and charted position before naming an IALA mark or changing the route.
• Separate ordinary Region A lateral lights from red or green composite group flashing (2+1), then relate a preferred-channel candidate to the charted junction and conventional direction.
• Distinguish all four cardinal lights by white colour, Q or VQ rate, complete group, long flash and exact repeat period, then state the named safer-water relationship without inventing a universal track.

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