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SUFFREN heavy cruisers (1930 - 1932)


Photo



Foch 1933

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Suffren     Arsenal de Brest 17.4.1926 3.5.1927 1.1.1930 hulk 12.1962
Colbert     Arsenal de Brest 12.6.1927 20.4.1928 4.3.1931 scuttled 27.11.1942
Foch     Arsenal de Brest 21.6.1928 24.4.1929 15.9.1931 scuttled 27.11.1942
Dupleix     Arsenal de Brest 14.11.1929 9.10.1930 20.7.1932 scuttled 27.11.1942


Technical data


Displacement standard, t

10000

Displacement full, t

Suffren: 12928

Colbert: 13103

Foch: 13429

Dupleix: 13407

Length, m

Suffren: 185.0 pp 196.0 oa

Colbert, Foch: 185.0 pp 194.2 oa

Dupleix: 185.0 pp 194.0 oa

Breadth, m

Suffren: 20.0

Colbert: 19.4

Foch, Dupleix: 19.3

Draught, m

Suffren, Colbert: 7.34 full load

Foch: 7.50 full load

Dupleix: 7.20 full load

No of shafts

3

Machinery

Suffren, Colbert: 3 sets Rateau-Bretagne geared steam turbines, 8 Guyot du Temple boilers (6 oil- and 2 coal-fired)

Foch, Dupleix: 3 sets Rateau-Bretagne geared steam turbines, 6 Guyot du Temple boilers

Power, h. p.

90000

Max speed, kts

32

Fuel, t

Suffren, Colbert: oil 1700 + coal 640

Foch: oil 2620

Dupleix: oil 2585

Endurance, nm(kts)

Suffren, Colbert: 4600(15)

Foch, Dupleix: 5300(15)

Armour, mm

Suffren, Colbert: belt: 50, deck: 25 + 18, magazines: 50 - 20, turrets: 30, CT: 30

Foch: torpedo bulkhead: 54 - 40, bulkheads: 20, deck: 22 - 20 + 18, magazines: 54 - 20, turrets: 30, CT: 30

Dupleix: torpedo bulkhead: 60 - 20, bulkheads: 20, deck: 22 - 20 + 30, magazines: 60 - 30, turrets: 30, CT: 30

Armament

Suffren: 4 x 2 - 203/50 M1924, 8 x 1 - 75/50 M1927, 8 x 1 - 37/50 M1925, 4 x 3 - 550 TT, 2 catapults, 2 seaplanes (FBA.17, CAMS.37)

Colbert: 4 x 2 - 203/50 M1924, 8 x 1 - 90/50 M1926, 6 x 1 - 37/50 M1925, 2 x 3 - 550 TT, 2 catapults, 3 seaplanes (FBA.17, CAMS.37)

Foch: 4 x 2 - 203/50 M1924, 8 x 1 - 90/50 M1926, 6 x 1 - 37/50 M1925, 2 x 3 - 550 TT, 2 catapults, 3 seaplanes (FBA.17, CAMS.37, GL.810)

Dupleix: 4 x 2 - 203/50 M1924, 4 x 2 - 90/50 M1930, 6 x 1 - 37/50 M1925, 4 x 4 - 13.2/76, 2 x 3 - 550 TT, 2 catapults, 3 seaplanes (FBA.17, CAMS.37, GL.810, GL.812)

Complement

Suffren, Colbert: 602

Foch, Dupleix: 605



Standard scale images


<i>Foch</i> 1939
Foch 1939
<i>Dupleix</i> 1939
Dupleix 1939


Graphics


<i>Foch</i> 1933
Foch 1933
<i>Suffren</i> 1939
Suffren 1939
<i>Dupleix</i> 1940
Dupleix 1940
<i>Colbert</i> 1941
Colbert 1941


Project history

Built under 1925-1928 programmes, presented development of of the previous class with strengthened protection, differed by exclusively good seagoing capacities. Cruisers a little differed among themselves. Suffren and Colbert had on two coal-burning boilers and their protection of engine rooms and aft boiler rooms was strengthened by 2m-wide bunkers.

Last two ships of class had an internal armoured belt and, accordingly, lost a longitudinal armoured bulkhead. Armour weight for Suffren was 951t, for Colbert and Foch 1374t, and for Dupleix 1533t. More weak torpedo armament since the second ship of class became a payment for strengthened protection. Colbert, Foch and Dupleix had only two triple TTs instead of four on Suffren.

On trials they reached from 32.51 (Suffren) to 33.06 (Colbert) knots.

Ship protection, Suffren, Colbert

50mm armour belt with 2.56m height protected machinery spaces. Upper deck amidships was 25mm, main deck had 18mm thickness. Magazines had box-shaped protection with 50mm longitudinal bulkheads and 20mm transverse bulkheads and crowns.

Ship protection, Foch

54mm longitudinal bulkhead was 5.5-6.1m-high, connecting abreast aft machinery spaces with double bottom by 40mm lower part. Upper deck amidships was 22mm (small area near centerline was 20mm), main deck had 18mm thickness. Magazines had box-shaped protection with 54mm longitudinal bulkheads and 20mm transverse bulkheads and crowns. Steering gear compartment had 26-18mm protection.

Ship protection, Dupleix

60mm longitudinal bulkhead was 5.5-6.1m high, its part abreast aft machinery was double, consisting of two 40-20mm layers, and connected with double bottom. Upper deck amidships was 22mm (small area near centerline was 20mm), main deck between armoured longitudinal bulkheads had 30mm thickness. Magazines had box-shaped protection with 54mm longitudinal bulkheads and 20mm transverse bulkheads and crowns. Steering gear compartment had 26-18mm protection.

Modernizations

1933, Suffren: - 2 x 3 - 550 TT

late 1930s, Suffren, Colbert, Foch: + 3 x 4 - 13.2/76

1941 - 1942, Colbert: + 6 x 1 - 37/50 M1925, 4 x 4 - 13.2/76, 2 x 2 - 13.2/76, 4 x 1 - 8.80

1941 - 1942, Foch: + 4 x 2 - 37/50 M1933, 4 x 4 - 13.2/76, 2 x 2 - 13.2/76, 7 x 1 - 8.80

1941 - 1942, Dupleix: + 4 x 2 - 37/50 M1933, 4 x 4 - 13.2/76, 2 x 2 - 13.2/76, 3 x 1 - 8.80

mid-1942, Colbert: + Sadire radar

mid-1945, Suffren: - 8 x 1 - 37/50, 2 x 3 - 550 TT, catapults with seaplanes; + 8 x 1 - 40/56 Mk 1.2, 20 x 1 - 20/70 Mk 4, SA, SF radars

Naval service

Suffren in July, 1940 was disarmed at Alexandria and 30.5.1943 came over to the side of Gaullist Government in Algeria. She was paid id off into reserve in October, 1947 (really she was used as hulk since that time).

Remaining ships remained under control of Vichy. Colbert, Foch and Dupleix were scuttled 27.11.1942 at Toulon. Foch and Dupleix were raised by Italians in April and July 1943 respectively, but never repaired. Former was broken up, latter was sunk by Allied aircraft in 1944.