Gravelly Shoal (Michigan)

2004 Reference USCG Light List - Vol. VII: 10540

2004 Characteristic

Fl R 6s. R11.

2004 Optic and Structure

N/A N/A 75 White square tower on cylindrical base.

2004 Fog Signal

HORN: 1 blast ev 30s (3s bl). Operates continuously. None