물때 타이드
조수 관측소
Eel Point
Great Point
Muskeget Island, North Side
Nantucket Island
해류 관측소
Eel Pt., Nantucket I. 2.5 miles NE of
Great Point, 0.5 mile west of
Great Point, 3 miles west of
Muskeget I., channel 1 mile northeast of
Nantucket Harbor entrance channel
