Guidance

MGN 357 (M+F) Amendment 1: night-time lookout – photochromic lenses and dark adaptation

Guidelines about avoiding the use of photochromic lenses and allowing time for dark adaptation when undertaking lookouts at night.

• From: Maritime and Coastguard Agency
• Published: 22 October 2026

Documents

MGN 357 (M+F) Amendment 1: night-time lookout – photochromic lenses and dark adaptation

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Details

This notice replaces MGN 357 (M+F).

Notice to all:

• ship operators
• masters
• skippers
• officers
• lookouts