Spichern was raised in 1947, rebuilt, renamed Ringfjell and returned to Norwegian merchant service in 1949.

Burmeister & Wain built her engines, which were a pair of seven-cylinder, four-stroke, single acting diesels.

However, on 8 April Germany began its invasion of Norway, so Krossfonn made for the nearest British port.

[2] On 13 June Krossfonn left Brest in ballast to sail via Fort-de-France in Martinique to Cristóbal in Panama for orders.

On 26 May 1941 during Operation Rheinübung she bunkered the German cruiser Prinz Eugen at sea with 2,660 tons of heavy fuel oil.

[3] Between 4 and 10 February the heavy cruiser Admiral Hipper patrolled off the Azores and was refueled several times by Spichern.

[2] In 1947 Spichern's wreck was raised in two parts and towed to Kiel, where Howaldtswerke AG rebuilt her.

In May 1949 she returned to Norwegian merchant service as Ringfjell, owned by Ringals Rederi A/S and managed by Olav Ringdal of Oslo.