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Constrained by draft

Technical visualConstrained by draft
Constrained by draftAn International-Rules vessel constrained by draft may show three all-round red lights vertically and a cylinder by day in addition to ordinary power-driven lights.mastheadport sidelightstarboard sidelightsternlightall-round redall-round redall-round redcylinderINTL ONLY
Constrained by draftAn International-Rules vessel constrained by draft may show three all-round red lights vertically and a cylinder by day in addition to ordinary power-driven lights.12345671masthead2port sidelight3starboard sidelight4sternlight5all-round red6cylinder7INTL ONLY

International Rules only

Rule 28 International only; these are additional signals, not replacements.

International only

A qualifying power-driven vessel may, in addition to ordinary power-driven vessel lights:

show three all-round red lights vertically

Day shape

cylinder

These are additional signals, not replacements for its normal power-driven vessel lights.

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