The northeastern side of Saba Bank lies about 4.3 km southwest of the island of Saba. It is raised about 1000 m above the general depths of the surrounding sea floor. With a length of 60 to 65 km and a width of 30 to 40 km, the atoll's total surface area is approximately 2200 km², as measured from 11-200 metre depth, 1600 km² of which is shallower than 50 m.
From northeast the bank extends about 55 km southwest, with a least reported depth of 7.3 m located about 15 km southwest of Mount Scenery. A depth of 8.2 m lies about 16 km south of the island. The eastern side of the bank is fringed with a ridge of living coral, sand and rock, nearly 48 km in length. The depths over the ridge range from 11 to 35 m. Westward of this ridge, except for a few 16.5 m and 18.3 m coral patches near the south side of the bank, and a 16.4 m patch near the west end of the bank, the bottom is clear white coral sand with depths of from 21.9 to 36.6 m, gradually increasing towards the edge of the bank, but ending abruptly in depths of 54.9 m. In depths of under 20 m, the bottom can be distinctly seen.
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