| Laid down | 1st August 1902 |
| Launched | 27th June 1903 |
| Completed | N/A |
| Commissioned | 5th April 1906 |
| Fate | Scrapped: 1921 |
| Builders | Imperial Dockyard, Kiel Germany |
| Complement | 35 + 598 |
| Dimensions | |
|---|---|
| Displacement | 9533 tons std 10266 tons max |
| Dimensions | 419' 7" x 66' 4" |
| Draught | 25' 6" |
| Armament | |
| Main guns | 4 x 9.4"/40 (2 x 2) 380 rounds |
| Secondary guns | 10 x 5.9"/40 (10 x 1) 1600 rounds |
| Torpedo tubes | 4 x 17.7" 11 rounds |
| Other weapons | 14 x 3.46" (14 x 1) 2100 rounds |
| Countermeasures | None |
| Armour | Deck: 1" - 2.5" Belt: 3" - 6" C.T.: 1" - 4" Turrets: 1.5" - 8" |
| Aircraft Facilities | |
| Aircraft | None |
| Flightdeck | None |
| Hangar | None |
| Catapults | None |
| Arrestor system | None |
| Aviation fuel | None |
| Electronics Fit | |
| Radar | None |
| Sonar | None |
| ECM | None |
| Other | N/A |
| Machinery | |
| Engines | 16 x Durr boilers 3 x 3 cyl. vertical triple expansion |
| Power output | 20625ihp |
| Speed | 21.1kts |
| Shafts | 3 |
| Range | 4200NM @ 12kts |
| Fuel | 1570 tons coal |
Roon was converted into an accomodation ship in 1916. It was proposed to convert her
into a seaplane carrier with 4 aircraft, but this never happened.
She was stricken on 25th November 1920, and scrapped at Kiel-Nordmole.
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