タイドナビ
検潮所
Old Point Comfort
検潮所（潮汐流）
0.2 mile south of
0.55 n.mi. east of
0.9 mile southwest of
Hampton Roads entrance, midchannel
Thimble Shoal Channel, 2.4 n.mi east of Ft. Monroe
Thimble Shoal Channel (west end)
Willoughby Spit, 0.8 mile northwest of
