Country: Netherlands Region: Province N-holland
Locale: Den Helder
Latitude: 52° 57' 31" N Longitude: 4° 47' 16" E
Area use / Military Branches: NL Navy
Den Helder, the Royal Netherlands Navy main seaport; including the supporting harbour, logistic, repair & training facilities.
Just outside of the town is the location of the underground Benelux Joint Naval Command at lat/long: 52°55'19"N, 04°44'43.39"E
Official NL Navy website: http://www.defensie.nl/english/navy/
Search for SEA Den Helder