North Manitou Shoal (Michigan)
2004 Reference USCG Light List - Vol. VII: 18340
2004 Characteristic
2004 Optic and Structure
| N/A | N/A | 79 | White square structure on concrete base. |
2004 Fog Signal
| HORN: 2 blasts ev 20s (2s bl-2s si-2s bl-14s si). | None |
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