The Oslofjord (Norwegian: Oslofjorden) is a bay in the south-east of Norway, stretching from an imaginary line between the Torbjørnskjær and Færder lighthouses near Langesund in the south to Oslo in the north. The bay is divided into the inner (indre) and outer (ytre) Oslofjord at the point of the 17 km long and narrow Drøbaksundet. The entire population situated around the Oslofjord including Oslo is about 1.7 million, and the total population of all the counties situated around the fjord is approxiametely 2 million.
In spite of its name, the Oslofjord is not, geologically speaking, a fjord. In historical times, it was known by the current name of the region, Viken (the bay); it is unclear when (and for what reason) the body of water acquired its current name.
The fortress's resistance blocked the route to Oslo, thus delaying the rest of the group long enough for the royal family, the government and parliament to be evacuated, as well as the national treasury. The result was that Norway never surrendered to the Germans, leaving the Quisling government illegitimate and permitting Norway to participate as an ally in the war, rather than as a conquered nation.
