1. Indian Ocean, Seychelles, Mahe and Praslin islands and approaches Yale Public content 1990. 2011-12-08T18:45:01Z. 2015-10-21T15:07:29Z. United States. Defense Mapping Agency. Hydrographic/Topographic Center. The Center : [DMA, Combat Support Center, DOA, distributor. English. Public. Indian Ocean., Indian Ocean, and Seychelles.