The German battlecruiser Von der tann was known as Germany’s first true battlecruiser.

Von der Tann specifications
Dimensions	171.6 x 26,6 x 9 m
Displacement	19 064 t, 21 700t FL
Crew	1174 (41+882)
Propulsion	4 screws, 4 Parsons turbines, 18 Schultze-Thornycroft boilers, 43 600 hp
Speed	24.7 knots ( km/h; mph)
Range	4,400 nmi (8,100 km; 5,100 mi) at 14 knots (26 km/h; 16 mph)
Armament	8 x 280 (4×2), 10 x 150, 16 x 88, 4 TT 450 mm (SM, front, rear, 2 sides)
Armor	Battery 150, citadel 180, turrets 230, belt 250, blockhaus 250, barbettes 230 mm

For the people that don’t know mm. The naval artillery or main battery. Secondaries will be listed below. Torpedo tubes are under the waterline or below the water. specifications translated. http://www.naval-encyclopedia.com

4 turrets () 8 x 280 mm or 11-in,10 x 150 mm or 5 in,16 x 88 mm or 3.4 in, 4 TT (torpedo tubes) 480 mm or 18.8 in.
Now the dimensions of Von der tann.
Length of von der tann 171.6 m or 562.9 ft, width 26.6 m or 87.2 ft, draft (how low it sits in the water) 9 m or 29.5 ft.
The von der tann had a crew of 1174 in total. 41 officers and 882 enlisted. It vary’s in crew during war time. The Displacement of von der tann.
19,004 t (tons) 21,700 t full load.
Armor of von der tann. Battery 150 mm or 5.9 in, Citadel 180 mm or 7 in, Turrets 230 mm or 9 in, Belt 250 mm or 9.8 in, Bulkheads 250 mm or 9.8 in, Barbettes 230 mm or 9 in. the rest of specifications are above. The von der tann had been in service in World war 1 including naval bombardment of British coastal cities. Even fought in the battle of Jutland.

The battle of Jutland proved battlecruisers had vulnerabilities . For example battlecruisers are vulnerable to incoming shell fire from any battlecruiser or battleship of any class. Battlecruisers like the Von der Tann had insufficient armor. Which meant if Von der Tann got hit directly on the turret or anywhere else it would knock the ship out of action or just sink it completely with a the crew. Speed was the armor of battlecruisers. If powder bags where in the shoots they could implode killing all hands on board.