Danish ironclad Helgoland

Helgoland
History
Kingdom of Denmark
Name:	Helgoland
Namesake:	Battle of Heligoland
Builder:	Naval Dockyard, Copenhagen
Laid down:	20 May 1876
Launched:	9 May 1878
Commissioned:	20 August 1879
Decommissioned:	29 June 1907
Fate:	Scrapped 1907 at Dordrecht
General characteristics
Type:	Barbette ironclad
Displacement:	5,480 tonnes (5,390 long tons)
Length:	79.17 m (259 ft 9 in)
Beam:	18.05 m (59 ft 3 in)
Draft:	5.9 m (19 ft)
Installed power:	4,000 ihp (3,000 kW)
Propulsion:	2 shafts, 2 Compound steam engines 8 cylindrical boilers
Speed:	13 knots (24 km/h; 15 mph)
Range:	1,400 nmi (2,600 km; 1,600 mi) at 9 kn (17 km/h; 10 mph)
Complement:	350
Armament:	1 × 305 mm (12 in) gun 4 × 260 mm (10.2 in) guns 5 × 120 mm (4.7 in) guns
Armour:	Belt: 152–315 mm (6.0–12.4 in) Barbette: 260 mm (10.2 in) Casemate: 260 mm (10.2 in) Deck: 52 mm (2.0 in)

The Danish ironclad Helgoland was a coast defence barbette ironclad named for the Danish victory over the combined Prussian and Austro-Hungarian squadron at Battle of Heligoland during the Second Schleswig War in 1864.

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