Range-range navigation lattice generated by Attu-Semichi stations.First purely electronic navigation lattice used by C&GS.;Electronic navigation lattice developed by party off of EXPLORER
3/20/2019 10:37:39 AM
Date: 1945
Credit: Association of Commissioned Officers
Location: Alaska, Attu Island, Aleutian Islands
Subject: Charting
Subject: Navigation
Subject: Electronic
Subject: HF and MF Systems