VUS517L Covers: Detailed coverage of Alaska, from Prince of Wales Island to Point Lay on the North Slope, including Glacier Bay, the Kenai Peninsula, and the Aleutian Chain in full. Bathymetric coverage of the Gulf of Alaska, Bristol Bay and United States waters in the Chukchi and Bering Seas, and along the entire Aleutian chain including the Surveyor Seachannel, Aleutian Trench, Umnak Plateau, Chirikof Basin, and Hope Seavalley.