Guidance

MGN 199 (M) Amendment 1 Danger of interaction

Highlights hydrodynamic effects on manoeuvrability in shallow and confined waters, with guidance on interaction, squat and safe vessel handling.

• From: Maritime and Coastguard Agency
• Published: 3 November 2026

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MGN 199 (M) Amendment 1 Danger of interaction

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Notice to Owners, Masters, Pilots and Tug-Masters

This notice supersedes Marine Guidance Note 18