Nautical Black Day Shape Towing Marker

This diamond-shaped day signal is made with a heavy-duty black mesh and a stainless steel frame.  The frame holds its shape well for clear visibility during use.

This item shows some signs of previous use. One section has been sewn back together, and there’s a slight misalignment in the mesh. These imperfections don’t affect its function—it’s still a fully operational navigational marker.

Used to indicate dredging activity or restricted maneuverability, this diamond shape is a standard piece of day signal equipment. It’s typically used with other day shapes to meet navigation rules.

Common Uses Include:

• Dredging operations
• Restricted maneuverability signals
• Maritime compliance and navigation safety