Danish explorer of Siberia and Alaska in service to the Russian Czar
Three or twelve miles – something of a hodgepodge
A politically incorrect object lesson
Improvement of the GPS signal by terrestrial means
A practical approach to navigation
Explorer and cartographer of the Pacific Northwest
Closed sea, open sea, or partially-closed sea?
Civil War-era fortress now home to the State University of New York Maritime College
Congress entrusted the US Coast Guard with icebreaking. What happened?