Charts. Great Exuma. Harbors of Great Exuma, Bahama Islands, W. I., from British survey in 1837, scale naut. m.=2.5 in., natural scale 1:30,000; Nurse Channel, Bahama Islands, W. I., from British survey in 1841, scale naut. m.=4 in., natural scale 1:18,000; no. 340.