The Maria Schröder began life as the Rolf Jarl, a 1,917 GRT steam powered cargo ship of the “three-island” style built at Trondhjems Mekaniske Værksted (Yard No. 174), Trondheim, Norway, for Det Nordenfjeldske Dampskibsselskab, also of Trondheim, Norway. She was launched 19 June 1920 and delivered the following October with a length of 81 meters, beam of 12.8 meters, and draught of just under 7-meters. Propulsion was provided by a triple-expansion steam engine provided by the builder, and a single shaft for a speed of 11.5 knots (trials speed).
One reference indicates that the Rolf Jarl was in Norway when Germany invaded the country, but was able to escape and sail to France in May 1940, after which, she was placed in Allied service.
In October 1940 the ship was slated to sail with Convoy HX83 to Sydney, Austrailia, but did not depart with the convoy. Instead, she was redirected to Belfast, Ireland for orders and a cargo of lumber, and then joined Convoy SC9 on the Sydney-UK passage.
In June 1941 the Rolf Jarl sailed with Convoy SL78, departing Freetown on 18 June and arriving in Liverpool on 12 July. And then in August, sailed with Convoy ON4 in the North Atlantic. After which she sailed with Convoy SL78 to Sydney. On the return trip, the ship was scheduled to sail as part of Convoy SC54 from Sydney to the UK, but joined the following convoy SC55 instead.
In July 1942 she sailed with Convoy SC91, and then in August she sailed on Convoy ON122 in the North Atlantic (Westbound leg).
The Loss of the Maria Schröder:
On 11 April 1956, while en route from Aqaba, Jordan to West Germany, the ship ran aground on a reef at Nabq at position 28.10N/34.30E. Attempts to refloat the ship were unsuccessful and she was declared a total constructive loss.
Miramar Single Ship Reports for 5605100