
The Pacific Ocean dominates this maritime expanse within the Aleutians East Borough, recorded during a 2020 survey. This specific offshore quadrangle is defined primarily by its maritime coordinates and the Public Land Survey System grids of T60s R83w, T60s R82w, and T61s R83w. The map serves as a contemporary record of the open waters and township boundaries in this remote Alaskan region, with bathymetry and nautical data sourced from imagery and elevation datasets. Given its location in the Aleutian chain, the map focuses on the marine environment rather than terrestrial settlements, providing a clear view of the survey lines that extend across the sea floor.
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This is the sole edition of this map. No revisions or reprints were ever made.
1949 · False Pass
USGS Topo · 1:250,000
1950 · False Pass
USGS Topo · 1:250,000
1953 · Port Moller
USGS Topo · 1:250,000
1963 · Port Moller A-5
USGS Topo · 1:63,360
1963 · Port Moller A-6
USGS Topo · 1:63,360
1963 · False Pass D-0
USGS Topo · 1:63,360
1988 · Port Moller
USGS Topo · 1:250,000
2020 · False Pass D-0 OE E NW
USGS Topo · 1:25,000
2020 · False Pass D-0 OE E SW
USGS Topo · 1:25,000
2020 · False Pass D-0 SW
USGS Topo · 1:25,000