German submarine U-373

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-373 had a displacement of {{convert|769|t|LT}} when at the surface and {{convert|871|t|LT}} while submerged.{{sfn|Gröner|1991|pp=43-46}} She had a total length of {{convert|67.10|m|ftin|abbr=on}}, a pressure hull length of {{convert|50.50|m|ftin|abbr=on}}, a beam of {{convert|6.20|m|ftin|abbr=on}}, a height of {{convert|9.60|m|ftin|abbr=on}}, and a draught of {{convert|4.74|m|ftin|abbr=on}}. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of {{convert|2800 to 3200|PS|kW shp|-1}} for use while surfaced, two AEG GU 460/8–27 double-acting electric motors producing a total of {{convert|750|PS|kW shp}} for use while submerged. She had two shafts and two {{convert|1.23|m|ft|abbr=on|0}} propellers. The boat was capable of operating at depths of up to {{convert|230|m}}.{{sfn|Gröner|1991|pp=43-46}}

The submarine had a maximum surface speed of {{convert|17.7|kn}} and a maximum submerged speed of {{convert|7.6|kn}}.{{sfn|Gröner|1991|pp=43-46}} When submerged, the boat could operate for {{convert|80|nmi}} at {{convert|4|kn}}; when surfaced, she could travel {{convert|8500|nmi}} at {{convert|10|kn}}. U-373 was fitted with five {{convert|53.3|cm|in|0|abbr=on}} torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm SK C/35 naval gun, 220 rounds, and a 2 cm FlaK 30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.{{sfn|Gröner|1991|pp=43-46}}

The submarine was laid down on 8 December 1939 at the Howaldtswerke at Kiel as yard number 3, launched on 5 April 1941 and commissioned on 22 May under the command of Kapitänleutnant Paul-Karl Loeser.

The boat's first patrol was preceded by short trips between Kiel in Germany and Horten Naval Base and Trondheim in Norway in July and August 1941. Her first patrol proper commenced with her departure from Trondheim on 4 September. Negotiation of the gap separating Iceland and the Faroe Islands was followed by sweeps southeast of Greenland. The submarine then docked at Brest in occupied France on 2 October.

U-373{{'}}s initial patrols were fairly routine. All that changed on the second part of her fourth sortie when she sank the Mount Lycabettus off the eastern United States/Canadian coast on 17 March 1942. She was chartered by Switzerland and was sailing with neutrality mark: Switzerland cross painting with "Switzerland" written on the hull.{{cite web |url= https://www.wrecksite.eu/wreck.aspx?16845 |title=Mount Lycabettys |publisher=wrecksite.eu |access-date=10 December 2017}} On the 22nd, she sank the Thursobank east of Chesapeake Bay. The surviving Chinese crewmen from this ship were arrested for mutiny immediately after landing. It was alleged that they had denied the British officers a share of the food and warm clothing.

She then sank the John R. Williams on 26 June 1942 with a mine laid on the 11th off Cape May.

U-373 was unsuccessfully attacked by {{HNoMS|Acanthus|K01|6}} in mid-Atlantic on 25 August 1942. The Norwegian corvette dropped five depth charges, but the U-boat was not damaged.

The boat's seventh foray was uneventful, but on her eighth she was bombed by a B-24 Liberator of the USAAF on 2 March 1943. Damage was moderate; after repairs, U-373 continued with her patrol.

On 24 July 1943, the submarine was attacked west of Madeira by Grumman Avenger and Wildcat aircraft from the escort carrier {{USS|Santee|CVE-29|6}}. Two men were killed, another seven were wounded. The boat was damaged by a FIDO homing torpedo, but was able to carry-on with her patrol.

During the third part of a three-part patrol on 10 November 1943, a lookout broke his arm while the submarine fought bad weather.

U-373 had a lucky escape when she was attacked by a British Vickers Wellington of No. 612 Squadron RAF on 3 January 1944 in the Bay of Biscay. A second aircraft, a Liberator of 224 Squadron joined in. On tying up in Brest, two unexploded depth charges were discovered lodged in the conning tower. The boat was compelled to put to sea once more to jettison her unwanted extra 'cargo' in another hazardous operation.

The boat left Brest for the last time on 7 June 1944. The following day, she was sunk by a RAF Liberator bomber of 224 Squadron in the Bay of Biscay. The Liberator than strafed several dinghies with floating survivors, killing Bootsmannsmaat Nielsen. Author Norman Franks writes “it was not unheard of for survivors to be shot-up in the water, although thankfully it was rare, or at least very few reported doing so - officially. In most cases it was no more than excited enthusiasm, the adrenalin pumping hard.” {{cite book |last=Franks |first=Norman L.R.|date=1997 |title=Dark sky, deep water |url= https://books.google.com/books?id=M74hAQAAIAAJ&q=U-373+%C2%A0nielsen+liberator |location=Lanham, Maryland |publisher=Rowman & Littlefield |page=24 |isbn= 978-1442232853 |access-date=6 August 2023 }} The same aircraft sank {{GS|U-441||2}} 20 minutes later.

Four men died in U-373; there were 47 survivors.

U-373 took part in 16 wolfpacks, namely:

• Markgraf (8 – 15 September 1941)
• Brandenburg (15 – 24 September 1941)
• Störtebecker (5 – 16 November 1941)
• Seydlitz (27 December 1941 – 2 January 1942)
• Lohs (11 August – 21 September 1942)
• Draufgänger (29 November – 2 December 1942)
• Büffel (9 – 15 December 1942)
• Ungestüm (15 – 26 December 1942)
• Neuland (4 – 13 March 1943)
• Dränger (14 – 20 March 1943)
• Seewolf (21 – 28 March 1943)
• Siegfried (22 – 27 October 1943)
• Siegfried 3 (27 – 30 October 1943)
• Jahn (30 October – 2 November 1943)
• Tirpitz 5 (2 – 8 November 1943)
• Eisenhart 8 (9 – 10 November 1943)

{{reflist}}

{{Refbegin}}

• {{cite book | last1 = Busch | first1 = Rainer | last2 = Röll | first2 = Hans-Joachim | translator-last = Brooks | translator-first = Geoffrey | title = German U-boat commanders of World War II : a biographical dictionary | publisher = Greenhill Books, Naval Institute Press | location = London, Annapolis, Md | year = 1999 | isbn = 1-55750-186-6 }}
• {{cite book

|last1=Busch

|first1=Rainer

|last2=Röll

|first2=Hans-Joachim

|title=Deutsche U-Boot-Verluste von September 1939 bis Mai 1945

|trans-title=German U-boat losses from September 1939 to May 1945

|series=Der U-Boot-Krieg

|volume=IV

|publisher=Mittler

|location=Hamburg, Berlin, Bonn

|year=1999

|isbn=3-8132-0514-2

|language=de

}}

• {{cite book

|last1=Gröner

|first1=Erich

|last2=Jung

|first2=Dieter

|last3=Maass

|first3=Martin

|translator-last1=Thomas

|translator-first1=Keith

|translator-last2=Magowan

|translator-first2=Rachel

|year=1991

|title=U-boats and Mine Warfare Vessels

|volume=2

|series=German Warships 1815–1945

|location=London

|publisher=Conway Maritime Press

|isbn=0-85177-593-4

|ref=CITEREFGröner1991

}}

• {{cite book

|last=Kemp

|first=Paul

|title=U-Boats Destroyed – German Submarine Losses in the World Wars

|location=London

|year=1999

|publisher=Arms & Armour

|isbn=1-85409-515-3

}}

{{Refend}}

• {{Cite web

|url=http://uboat.net/boats/u373.html

|title=The Type VIIC boat U-373

|last=Helgason

|first=Guðmundur

|website=German U-boats of WWII – uboat.net

|access-date=26 December 2014

}}

{{German Type VII submarines}}

{{June 1944 shipwrecks}}

{{DEFAULTSORT:U0373}}

Category:German Type VIIC submarines

Category:U-boats commissioned in 1941

Category:U-boats sunk in 1944

Category:U-boats sunk by British aircraft

Category:U-boats sunk by depth charges

Category:1941 ships

Category:Ships built in Kiel

Category:World War II submarines of Germany

Category:Maritime incidents in June 1944