Seydlitz

Scuttled

Type	Heavy cruiser
Class	Admiral Hipper
War	Second World War
Main guns	8 × 8″ guns

Launched in 1939 but never completed. In 1942 work began to turn her into an aircraft carrier, then stopped; scuttled at Königsberg in 1945 and taken by the Soviets.

Fine screen halftone reproduction of a British Royal Air Force reconnaissance photograph of the Westhaven basin at Bremen, Germany, taken 8 May 1942. Ships present include the nearly complete heavy cruiser Seydlitz (launched in 1939 but never finished) and three destroyers. The destroyer alongside S Photo: Royal Air Force, Public domain · Wikimedia Commons

Armament and specifications

Armament

8 × 20.3 cm (8 in) guns
12 × 10.5 cm (4.1 in) SK C/33 guns
12 × 3.7 cm (1.5 in) SK C/30 guns
8 × 2 cm (0.79 in) C/30 guns
12 × 53.3 cm (21 in) torpedo tubes

Armour

Belt: 70 to 80 mm (2.8 to 3.1 in)
Armor deck: 20 to 50 mm (0.79 to 1.97 in)
Turret faces: 105 mm (4.1 in)

Builder	Deutsche Schiff- und Maschinenbau, Bremen
Laid down	29 December 1936
Launched	19 January 1939
Displacement	Normal: 17,600 t (17,300 long tons) Full load: 20,100 metric tons (19,800 long tons)
Length	210 m (689 ft 0 in) overall
Speed	32 knots (59 km/h; 37 mph)
Complement	42 officers 1,340 enlisted

As built, from the ship's Wikipedia article. Figures there may cover later refits too.

Career

She isn't listed in any of the fleet actions covered here.

Launched

19 January 1939

Fate

Scuttled

Scuttled incomplete, 29 January 1945