French submarine Pasteur

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Pasteur
Sous marin Ajax.jpg
Pasteur′s sister ship Ajax in 1930.
History
Civil and Naval Ensign of France.svgFrance
NamePasteur
Namesake Louis Pasteur (1822–1895), French chemist and microbiologist
Operator French Navy
Builder Arsenal de Brest, Brest,  France
Laid down5 July 1926
Launched19 August 1928
Commissioned1 September 1932
Homeport Brest, France
Fate Scuttled 18 June 1940
General characteristics
Class and type Redoutable-class submarine
Displacement
  • 1,572 tonnes (1,547 long tons) (surfaced)
  • 2,092 tonnes (2,059 long tons) (submerged)
Length92.3 m (302 ft 10 in)
Beam8.1 m (26 ft 7 in) [1]
Draft4.4 m (14 ft 5 in) (surfaced)
Propulsion
Speed
  • 17.5 kn (32.4 km/h; 20.1 mph) (surfaced)
  • 10 kn (19 km/h; 12 mph) (submerged)
Range
  • 14,000 nmi (26,000 km; 16,000 mi) at 7 kn (13 km/h; 8.1 mph) (surfaced)
  • 10,000 nmi (19,000 km; 12,000 mi) at 10 kn (19 km/h; 12 mph) (surfaced)
  • 4,000 nmi (7,400 km; 4,600 mi) at 17 kn (31 km/h; 20 mph) (surfaced)
  • 90 nmi (170 km; 100 mi) at 7 kn (13 km/h; 8.1 mph) (submerged)
Test depth80 m (262 ft)
Complement
Armament

Pasteur was a French Navy Redoutable-class submarine of the M6 series commissioned in 1932. She participated in World War II until she was scuttled in June 1940.

Contents

Characteristics

Profile of Casabianca, sister ship of Pasteur. Casabianca profile view.svg
Profile of Casabianca, sister ship of Pasteur.

Pasteur was part of a fairly homogeneous series of 31 deep-sea patrol submarines also called "1,500-tonners" because of their displacement. All entered service between 1931 and 1939.

The Redoutable-class submarines were 92.3 metres (302 ft 10 in) long and 8.1 metres (26 ft 7 in) in beam and had a draft of 4.4 metres (14 ft 5 in). They could dive to a depth of 80 metres (262 ft). They displaced 1,572 tonnes (1,547 long tons) on the surface and 2,082 tonnes (2,049 long tons) underwater. Propelled on the surface by two diesel engines producing a combined 6,000 horsepower (4,474 kW), they had a maximum speed of 18.6 knots (34.4 km/h; 21.4 mph). When submerged, their two electric motors produced a combined 2,250 horsepower (1,678 kW) and allowed them to reach 10 knots (19 km/h; 12 mph). Also called “deep-cruising submarines”, their range on the surface was 10,000 nautical miles (19,000 km; 12,000 mi) at 10 knots (19 km/h; 12 mph). Underwater, they could travel 100 nautical miles (190 km; 120 mi) at 5 knots (9.3 km/h; 5.8 mph).

Construction and commissioning

Laid down at Arsenal de Brest in Brest, France, on 5 July 1926 [2] with the hull number Q139, Pasteur was launched on 19 August 1928. [2] She was commissioned on 1 September 1932. [2]

Service history

On 12 May 1936, Pasteur and the destroyer L'Indomptable collided at the mouth of the Gironde during an exercise of the 2nd Light Squadron. [3]

In 1937, Pasteur received orders to make an endurance cruise to Douala, French Cameroon, in company with her sister ship Achille. [3]

World War II

At the start of World War II in September 1939, Pasteur was assigned to the 2nd Submarine Division in the 4th Submarine Squadron in the 1st Flotilla, a component of the Forces de haute mer (High Seas Force), based at Brest. [3] [4] Her sister ships Achille, Casabianca, and Sfax made up the rest of the division. [3] [4]

On either 3 [3] or 14 [5] September 1939, according to different sources, the four submarines of the 2nd Submarine Division as well as their sister ships Agosta and Ouessant received orders to establish a standing patrol off the coast of Spain. [5] The six submarines spent six weeks patrolling off Vigo, where part of the German merchant fleet — which the Allies suspected of serving as supply ships for German U-boats [6] — had taken refuge at the start of the war. [7] One source specifies that Pasteur, Casabianca, and Sfax rotated on patrol off Vigo beginning on 1 October 1939. [3] Before their patrols ended on 30 [5] or 31 [3] October 1939, according to different sources, the six French submarines had spent a combined 67 days at sea on patrol in very harsh conditions with no results. [5]

On 14 November 1939, the 2nd Submarine Division received orders to proceed to Halifex, Nova Scotia, Canada, to take part in Allied convoy operations in the Atlantic Ocean. [3] Fighting bad weather, Pasteur, Achille, Casabianca, and Sfax arrived at Halifax at 07:30 on 25 November 1939,. [3] where the British Royal Navy submarines HMS Cachalot, HMS Narwhal, HMS Porpoise, and HMS Seal joined them for convoy escort operations on 26 November 1939. [5] During the winter of 1939–1940, the submarines escorted three convoys from Halifax to the United Kingdom always in difficult weather conditions. [3] [8]

Beginning on 22 March 1940, the division was based at Harwich on the North Sea coast of England. On 17 April 1940, the division moved to Dundee, Scotland, to operate in the North Sea in support of Allied forces fighting in the Norwegian campaign as German forces began their conquest of Norway. While departing Dundee for her first Norwegian patrol on 18 April 1940, Pasteur collided with Achille, suffering damage to one of her diving planes and one of her propeller shafts. [3] [9] She was towed first to Cherbourg, France, and then to Brest for repairs, arriving there under tow by the tug Abeille 4 on 15 June 1940. [3]

German ground forces advanced into France on 10 May 1940, beginning the Battle of France, and Italy declared war on France on 10 June 1940 and joined the invasion. Pasteur was unable to move under her own power as German forces approached Brest. [2] To prevent the Germans from capturing her, she was scuttled at Brest at 19:00 on 18 June 1940. [3] [2] [10] [11] The Germans later refloated her wreck to clear the berth. [3]

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French submarine <i>Archimède</i> (Q142)

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French submarine <i>Sfax</i>

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French submarine <i>Achille</i> (Q147)

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French submarine <i>Argo</i>

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French submarine <i>Le Centaure</i> (Q169)

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French submarine <i>Pascal</i> (Q138)

Pascal was a French Navy Redoutable-class submarine of the M6 series commissioned in 1931. She participated in World War II, first on the side of the Allies from 1939 to June 1940, then in the navy of Vichy France until she was scuttled at Toulon in November 1942. She was never again seaworthy, but the Italians seized her and refloated her, and the Germans later took control of her. She was sunk in March 1944.

French submarine <i>Fresnel</i> (Q143)

Fresnel was a French Navy Redoutable-class submarine of the M6 series commissioned in 1932. She participated in World War II, first on the side of the Allies from 1939 to June 1940, then in the navy of Vichy France until she was scuttled at Toulon in November 1942. She was never again seaworthy, but the Italians seized her and refloated her, and the Germans later took control of her. She was sunk in March 1944.

French submarine <i>Actéon</i> (Q149)

Actéon was a French Navy Redoutable-class submarine of the M6 series commissioned in 1932. She participated in World War II, first on the side of the Allies from 1939 to June 1940, then in the navy of Vichy France. She was sunk in November 1942.

French submarine <i>Achéron</i>

Achéron was a French Navy Redoutable-class submarine of the M6 series commissioned in 1932. She participated in World War II, first on the side of the Allies from 1939 to June 1940, then in the navy of Vichy France. She was scuttled in November 1942.

French submarine <i>Sidi Ferruch</i> (Q181) WWII French submarine

Sidi Ferruch was a French Navy Redoutable-class submarine of the M6 series commissioned in 1939. She participated in World War II, first on the side of the Allies from 1939 to June 1940, then in the navy of Vichy France. She was sunk in November 1942.

French submarine <i>Agosta</i> (Q178) WWII French submarine

Agosta was a French Navy Redoutable-class submarine of the M6 series commissioned in 1937. She participated in World War II on the side of the Allies until she was scuttled in 1940.

French submarine <i>Ouessant</i> (Q180) WWII French submarine

Ouessant was a French Navy Redoutable-class submarine of the M6 series commissioned in 1937. She participated in World War II on the side of the Allies until she was scuttled in 1940.

French submarine <i>Le Héros</i> (Q170) World War II French submarine

Le Héros was a French Navy Redoutable-class submarine of the M6 series commissioned in 1934. She participated in World War II on the side of the Allies until June 1940, and then in the naval forces of Vichy France until she was sunk in 1942.

French submarine <i>Le Glorieux</i> World War II French submarine

Le Glorieux (Glorious) was a French Navy Redoutable-class submarine of the M6 series commissioned in 1934. She participated in World War II, first on the side of the Allies from 1939 to June 1940, then in the navy of Vichy France until November 1942. She then returned to the Allied side, operating as part of the Free French Naval Forces. Along with Archimède, Argo, Casabianca, and Le Centaure, she was one of only five out of the 31 Redoutable-class submarines to survive the war. She remained in French Navy service after World War II, and was decommissioned in 1952.

References

Citations

  1. ↑ Helgason, Guðmundur. "FR Ajax of the French Navy – French Submarine of the Redoutable class – Allied Warships of WWII". uboat.net. Retrieved 30 March 2018.
  2. 1 2 3 4 5 Allied Warships: FR Pasteur, uboat.net Accessed 12 July 2022
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 u-boote.fr PASTEUR (in French) Accessed 4 September 2022
  4. 1 2 Huan, p. 49.
  5. 1 2 3 4 5 u-boote.fr ACHILLE (in French) Accessed 5 August 2022
  6. ↑ Picard, pp. 33–35.
  7. ↑ Huan, pp. 60–61.
  8. ↑ Huan, p. 67.
  9. ↑ Picard, p. 55.
  10. ↑ Huan, p. 79.
  11. ↑ "Naval Events, June 1940, Part 3 of 4, Saturday 15th - Friday 21st". Naval History. Retrieved 22 November 2011.

Bibliography

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