Cauvin Bank is a wholly submerged atoll structure in the southern part of the Chagos Archipelago at 6°49′S 72°22′E / 6.817°S 72.367°E / -6.817; 72.367, just about 7 km (4 mi) south of the southeastern corner of the rim of the Great Chagos Bank. It is roughly circular in shape, with a diameter of 4 km (2 mi), and an area of about 12 km (5 sq mi). There are least depths between 9 and 11 m (30 and 36 ft) in the northern part of the reef. The closest land is the northernmost part of Diego Garcia atoll, Middle Island, 41 km (25 mi) to the south.

• Indian Ocean Pilot (download PDF)