1. South Korea--south coast, Cheju Haehyŏp Yale Public content 1994. 2011-12-16T16:12:58Z. 2015-10-21T15:07:56Z. United States. Defense Mapping Agency. Hydrographic/Topographic Center. The Center ; NOAA Distribution Branch, N/CG33, National Ocean Service, distributor. English. Public. Cheju Strait (Korea).