NAVYPEDIA

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

Graphics

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.