|Type:||2nd class cruiser|
|Propulsion:||Dürr boilers (Medusa)|
|Speed:||20 knots (37 km/h; 23 mph)|
Three of the ships, Melpomene, Magicienne and Marathon, were built for foreign (tropical) service, with a sheath of wood and copper - this added weight and made them slightly slower.
|HMS Marathon||Fairfields, Govan||10 August 1887||23 August 1888||1889|
|HMS Magicienne||Fairfields, Govan||10 August 1887||12 May 1888||1889|
|HMS Medea||Chatham||25 April 1887||9 June 1888||1889|
|HMS Melpomene||Portsmouth||10 October 1887||20 September 1888||1890|
|HMS Medusa||Chatham||25 August 1887||11 August 1888||1889|
- Brown, D.K. (2010) . Warrior to Dreadnought. Seaforth. p. 165. ISBN 978-1-84832-086-4.
- William Allan MP (22 April 1901). "Dürr water-tube boilers". Parliamentary Debates (Hansard). 92. House of Commons. col. 907.
Eight water-tube boilers of the Durr type have been ordered from Germany. The total cost of the boilers is £19,450. This is exclusive of spare parts and fitting on board. The boilers are to be placed on board H.M.S. "Medusa." They have been guaranteed by the maker to give 155,000 lbs. dry steam per hour from feed water at 80 deg. F., with an air pressure of 1½ inches; 104,000 lbs. per hour with ½ inch air pressure (that used for continuous steaming); and 80,000 lbs. per hour with natural draught.
- Colledge, J. J.; Warlow, Ben (2006) . Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
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