21 March 1940
Known Losses
MV ALGIER (Den 1654 grt): Crew: 23 (5 dead and 18 survivors): Cargo:General cargo, including 302 tons of copper, 228 tons of tin, 130 bottles of mercury and 11 Studebaker motor cars : Route: New York - Oslo - Copenhagen . Sunk west of the Orkney Islands. At 0105, the cargo ship was hit by a G7a stern torpedo fired by U-38. Survivors were rescued by Trawler MANX KING (UK), and landed at Scalloway.
Two hours layer at 0326 U-38 struck again.
MV CHRISTIANSBORG (Den 3270 grt): Crew:25 (1 dead and 24 survivors) :Cargo: 4107 short tons of maize : Route : Philadelphia - Frederikhavn - Copenhagen : Sunk west of the Orkney Islands. The after part of CHRISTIANBORG was sunk by gunfire from armed boarding vessel DISCOVERY II later the same day, who also rescued the surviving crew. These survivors were landed at Kirkwall.
Paddle Steamer GONDILIER (UK 250 grt): The paddle steamer ferry was scuttled as a block ship in Water Sound, Scapa Flow, Orkney Islands.
Still adhering to the rules of warfare for submarines, on the night of the 21st/22nd March,
S.S. HEDDERNHEIM (Ger 4,947 grt) was intercepted in the Skaggerak north east of Skagen by H.M. Submarine URSULA. After the crew were safe in their boats, in flat calm weather, the ship was torpedoed. The CO log of the URSULA provides a good profile of the difficulties faced by the RN submarine arm at this time. 2146 hours -
"Sighted a dim lights of a ship. Closed to investigate. When close signalled the ship to stop. This they did not do. After another attempt the ship was seen to increase speed so a practice round was fired with the gun as a warning shot. The ship now stopped and was asked to identify her self. She signalled 'Estonian'. Meanwhile Ursula crossed close astern of the ship and with the Aldis light the name 'Heddernheim - Bremen' could be read. The crew was ordered to abandon ship. Meanwhile they were also signalling. The crew eventually sent a boat over but this all took a very long time, it was obvious they were 'buying time'. Once again they were ordered to abandon ship, which they did but again very slow. A second warning round was now fired and this speeded up things a bit.".
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DKM War diary
Selected Extracts
Strong pro-British statements by U.S. President Roosevelt, who is especially in favor of large-scale deliveries of planes to the Western Powers. No hesitation in exporting even the most modern types of planes to Great Britain and France.
Pro-allied sympoathies in the US were increasing, but still restrained at this time.
Report by Oberregierungrat Dr. Ing. Hagemann on the assessment of British protective and defense measures against the German
magnetic mine. The enemy is undoubtedly on the right lines in placing cable loops around the hull. Roughly 50 per cent protection can be achieved with well set loops. There are, however, great difficulties in the way of large-scale use of this protective
DKM war diary then goes into a lengthy discussion as to the options available on modifications that can be made to the LMB type, and estimates that given the need to introduce widespread countermeasures throughout the merchant fleet as well as the Navy, it would be at least a year before effective countermeasures would be available to the allies. In fact degaussing was already underway, and sweeping technologies already being introduced. Special wooden constructed minehunters were already under construction and development of magnetic towed arrays had been designed. German mine technologies were constantly being changed and improved for the remainder of the war, making them always a dangerous threat at any time, but the threat posed by the pre-war technology was rapidly being brought under control. Within weeks, the DKM would be introducing new type magnetic mines (but without of course any stockpiles for en effective "shock and awe" campaign, and always limited production capability). The "battle of the boffins" would continue until the end of the war, but mines would never again be as deadly to Allied shipping as they had been in late 1939 to early 1940.
UBOATS
Kriegstagebücher (KTB) - War Diary
Departures
Wilhelmshaven: U-20, U-21
At Sea 21 March 1940
U-1, U-2, U-3, U-4, U-19, U-21, U-22, U-28, U-30, U-32, U-34, U-38, U-43, U-46, U-47, U-49, U-51, U-52, U-57.
19 boats at sea
OPERATIONS
North Sea
OA.114 departed Southend escort DD ANTELOPE from 21 to 23 March, DD AMAZON from 22 to 23 March, DD WINDSOR on the 23rd. The convoy dispersed on the 24th. OA.114 departed Southend escotted by destroyer ANTELOPE from 21 to 23 March, destroyer AMAZON from 22 to 23 March, destroyer WINDSOR on the 23rd. The convoy dispersed on the 24th.
MT.35 of 8 ships departed Methil escort ASW Gp 1 and and sloops FLEETWOOD and STORK. The convoy arrived in the Tyne later that day. FS.126 of 32 ships from the Tyne, fMiddlesbrough, and the Humber departed escort sloops FLEETWOOD STORK and ASW trawler LADY PHILOMENA (417grt). The convoy arrived at Southend on the 23rd. Due to increased U-boat activity in Moray Firth, DD IVANHOE and 3 trawlers on patrol in the Firth were placed under the control of Vice Admiral, Orkneys and Shetlands. DDs ESK, EXPRESS, IMPULSIVE, ICARUS were placed under the orders of Vice Admiral Orkneys and Shetlands.
Off Fro Havet near Trondheim, DDs FEARLESS and HASTY entered Norwegian territorial waters to challenge steamer NORDLAND (Ger 1902 grt), which was travelling under the protection of Norwegian torpedo boat TRYGG. FEARLESS was ordered away, but attempted again at Hustad, again unsuccessfully, to intercept the German ship. This search continued from 0645 to 1415. Wartime press reports and some postwar accounts identify this German ship as liner EUROPA (49,746grt) which remained anchored at Bremerhaven from pre war days throughout the war. German steamer NEUENFELS (8096grt) was challenged by two DDs of Operation DU near Lindesnes on the 22nd and escaped into Rosfjord.
The Admiralty commences the implementation of a safe corridors policy along the east coast (and parts of the west coast) of Britain which incorporates a series of searched channels for mines. Checks are conducted daily in these channels for the remainder of the war. On this day eight Magnetic Mines and a larger number of contact types are found and destroyed
Northern Waters
Base ship DUNLUCE CASTLE caught fire at Scapa, and was beached in Ore Bay until the fire was brought under control. CLA CAIRO and DDs HOSTILE, DIANA, FORESTER arrived at Sullom Voe at 0700 to refuel. The DDs departed at 1835 to rejoin the Fleet. CLA CALCUTTA departed Sullom Voe for duty as the AA ship for the Norwegian convoys. CLA CURLEW arrived at Scapa. DD JUPITER, detached from ON.21, arrived at Scapa with condenser trouble. DD JUNO arrived at Scapa after repairs and was dispatched to replace destroyer JUPITER in convoy ON.21. DDs ELECTRA and ENCOUNTER departed Scapa to Skerry Sound to guard the harbour entrance to Scapa after the Tower of Cliff battery fired on a U-boat in Holm Sound. The destroyers took up patrol in Skerry Sound to guard the eastern entrance to Scapa. ENCOUNTER attacked a contact in Stronsay Firth, later shown to be a wreck. Sub CLYDE departed Blyth for Scapa.
Subs SNAPPER and SUNFISH were ordered to intercept German steamer CHARLOTTE CORDS (1779grt), which was reported preparing to depart Rotterdam for Germany. Submarine SEAL was ordered to intercept German steamer JOHANN BLUMENTHAL (1626grt) off Arendal on the 23rd. Neither German ship was intercepted.
UK - France
SA.33 of one steamer departed Southampton, escort sloops FOXGLOVE and ROSEMARY. The convoy arrived at Brest on the 23rd.
SW Approaches
DDs WOLVERINE, VANSITTART, VIMY, VENETIA departed Plymouth to sweep prior to meeting HX.26.
Nth Atlantic
HX.29 departed Halifax escorted by RCN DDs OTTAWA and ST LAURENT. The DDs turned over the convoy to AMC AUSONIA and Fr sub SIDI FERRUCH on the 22nd. The AMC was detached on 2 April. DDs VERSATILE and WINCHELSEA escorted the convoy in home waters, and the convoy arrived at Liverpool 4 April.
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Med- Biscay
HG.23 with 36 ships departed Gib and was given ocean escort by sloops SCARBOROUGH and WELLINGTON from 21 to 30 March. In Home Waters, the convoy split and convoy HG.23A was escorted by the sloops. In Home Waters, convoy HG.23 was joined by DDs CAMPBELL and WALKER from convoy OG.23 and DD VOLUNTEER from 27 to 30 March. The convoy arrived at Liverpool on the 30th.
Fr DD SIMOUN arrived at Gib from Casablanca and sailed for Toulon.
Far East/Pacific/Australia
CL DANAE departed Singapore on patrol duties