Subpages (10): Application, Definition & Visibility of Lights Rule 23 - Power-driven vessels underway Rule 24 - Towing and pushing Rule 25 - Sailing vessels underway and vessels under oars Rule 26 - Fishing vessels Rule 27 - Vessels not under command or restricted in their ability to manoeuvre Rule 28 - Vessels constrained by their draught Rule 29 - Pilot vessels Rule 30 Anchored vessels and vessels aground Rule 31 - Seaplanes