On 5 Sep 1939, the Eidanger (Master Johannes Presthus) picked up all 32 survivors from the Bosnia, which had been sunk by as sunk by U-47 (Prien) earlier that day.

At 06.51 hours on 24 Feb 1942, U-558 attacked convoy ONS-67, heard two explosions and saw a cloud of smoke rising near the bow of the Eidanger (Master Johan Kjærstad), which had been hit by one torpedo on the starboard side, causing extensive damage to the bridge and forward. The tanker stopped, shifted the ballast to the aft tanks to bring the propeller under water and with the bow partially awash tried to reach convoy, which had made a turn of 80 degrees to starboard to shake off the U-boats. At 09.50 hours, U-558 attacked convoy again in 43°51N/43°15W and fired three torpedoes in one minute intervals. Krech observed three hits and that two ships stopped, a third continued on. The first and third torpedo struck the Anadara, which was later finished off by U-587 (Borcherdt). The second torpedo may have been aimed at the Empire Celt, which continued on her way after she had been hit by U-158 (Rostin) at 08.55 hours (she foundered later), but the torpedo struck the damaged Eidanger on the starboard side right in front of the mast. At 15.40 hours, U-558 found the drifting Eidanger with the fore section now submerged and sank her with a coup de grâce in 43°51N/43°35W.

All 39 crew members abandoned the Eidanger and were picked up by the rescue ship Toward, a witness of the attack and landed at Halifax on 1 March.