Oscarsborg Fortress (Norwegian: Oscarsborg festning) is a coastal fortress in the Oslofjord, close to the town of Drøbak in Akershus County, Norway. The...

Haakon VII and his government. The fleet was engaged in the fjord by Oscarsborg Fortress, an aging coastal installation near Drøbak, that had been relegated...

the German invasion force outside Oslo. Eriksen was the commander of Oscarsborg Fortress when Nazi Germany attacked Norway in the early hours of 9 April...

OscarsborgOpera (Norwegian: OscarsborgOperaen) is a non-profit foundation that produces opera performances for performance in the courtyard of Oscarsborg...

wall through the woods intended to protect the entrance of the complex. Oscarsborg Fortress "Austrått Fort". Innovation Norway. 11 August 2011. Archived...

Oslo, the capital of Norway. Two old 28 cm (11 in) coastal guns in the Oscarsborg Fortress engaged the ship at very close range, scoring two hits, as did...

depicted in Brassey's Naval Annual 1902 28 cm gun at Oscarsborg Fortress 28 cm gun at Oscarsborg Fortress The Blücher sinking Friedman, Norman (2011)...

experiments with developing a grenade while serving as a sergeant in the Oscarsborg Fortress. Aasen formed the Aasenske Granatkompani in Denmark, which before...

by the Oscarsborg Fortress. During the German invasion of Norway on 9 April 1940, the German cruiser Blücher was sunk by the fortress. Oscarsborg Fortress...

makes it the largest island in Inner Oslo Fjord. It is located between Oscarsborg and Gråøya. Søndre Håøya is a nature reserve area. White-tailed eagles...

sunk by artillery and torpedoes from Norwegian shore batteries at the Oscarsborg Fortress in the Oslofjord. Ten destroyers were lost in the Battles of...

Narrows (Drøbaksundet). In the early morning of 9 April, the gunners at Oscarsborg Fortress fired on the leading ship, Blücher, which had been illuminated...

Oslo, but the Battle of Drøbak Sound, resulting in the sinking by the Oscarsborg fortress delayed this, and thus allowed for the evacuation of the Norwegian...

Oslofjord, but were stopped when the Krupp-built artillery and torpedoes of Oscarsborg Fortress sank the German flagship Blücher: 65  and sank or damaged the...

Kattegat and the Skagerrak, the Dannebrog entered the Oslofjord, where at Oscarsborg Fortress near Drøbak, the family boarded the Norwegian naval ship Heimdal...

troops transported by ship to Oslo. Colonel Eriksen, Commander of the Oscarsborg fortress near Drøbak, mainly maintained for historical purposes, sank...

invasion fleet. The first salvo from the Norwegian defenders, fired from Oscarsborg Fortress about 950 meters distance, disabled the center propeller turbine...

Underoffiserskole) at Oscarsborg Fortress. He started his experiments developing a hand grenade while serving as a sergeant at Oscarsborg. He was encouraged...

the first Stukas took off at 10:59 from occupied airfields to destroy Oscarsborg Fortress, after the loss of the German cruiser Blücher, which disrupted...

German invasion fleet heading for Oslo was significantly delayed when Oscarsborg Fortress opened fire with two of its three old 28 cm guns, followed by...

outer fjord. It was not until the cruiser was at point-blank range that Oscarsborg Fortress opened fire, hitting with every shell. Within a matter of minutes...

Koht refuses, stating that Norway is a sovereign nation. Meanwhile, at Oscarsborg Fortress near Drøbak, Colonel Birger Eriksen prepares his undermanned...

(Alta) Hegra Fortress Helgøya Fortress Kvarven Fort Odderøya Fortress Oscarsborg Fortress Trondenes Fort Meløyvær Fortress Møvik Fortress Nielsen, Jens...

avoid damage. The Norwegians, including those manning the guns at the Oscarsborg Fortress were on alert, however. Steaming into the Oslofjord at a speed...

Oslo, the capital of Norway. Two old 28 cm (11 in) coastal guns in the Oscarsborg Fortress engaged the ship at very close range, scoring two damaging hits...

by two Whitehead torpedoes launched from fixed, shore-mounted tubes in Oscarsborg Fortress in Norway, and later sank. Whitehead's invention of the torpedo...

Royal Norwegian Navy (Coastal Artillery: Kaholmen torpedo battery at Oscarsborg Fortress) until 1993. Specifications: Mark VIII Entered service: 1927...

hit in the superstructure by two 28 cm shells from Norwegian fortress Oscarsborg, 15 cm shells from Kopås fortress and 5.7 cm gunfire from Husvik fortress...

finished the ship off after it had been severely damaged by cannon fire from Oscarsborg.[citation needed]  Austro-Hungarian Navy  Royal Navy  Imperial German...

Norwegian neutrality protection duties during the First World War, mostly at Oscarsborg Fortress. Remaining in military service after the end of the First World...