Two diamonds in a vertical line indicate the side to pass for which vessel?

Two diamonds in a vertical line indicate the side to pass for which vessel?

• A. Power-driven vessel
• B. Sailboat
• C. Dredge
• D. Fishing vessel

Answer: (C)

Two diamonds shown in a vertical line are a day shape signaling a dredging operation. That day shape tells you the vessel is restricted in its ability to maneuver, so other vessels must keep well clear and pass at a safe distance. In practice, the recommended passing side is on the dredging vessel’s starboard side to give you the clearest clearance away from the dredging work area. So the vessel identified by two vertical diamonds is the dredge.

Two diamonds shown in a vertical line are a day shape signaling a dredging operation. That day shape tells you the vessel is restricted in its ability to maneuver, so other vessels must keep well clear and pass at a safe distance. In practice, the recommended passing side is on the dredging vessel’s starboard side to give you the clearest clearance away from the dredging work area. So the vessel identified by two vertical diamonds is the dredge.