SS Castillo de Olite
| Official photo of Castillo de Olite | |
| History | |
|---|---|
| Name | 
 | 
| Namesake | 
 | 
| Owner | 
 | 
| Operator | 
 | 
| Port of registry | |
| Builder | De Rotterdamsche Droogdok Maatschappij NV, Rotterdam | 
| Yard number | 69 | 
| Laid down | 2 April 1920 | 
| Launched | 20 November 1920 | 
| Completed | 19 February 1921 | 
| Identification | 
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| Fate | Sunk by gunfire, 7 March 1939 | 
| General characteristics | |
| Type | cargo ship | 
| Tonnage | 3,545 GRT, 2,150 NRT | 
| Length | 110.1 m (361.3 ft) | 
| Beam | 15.2 m (49.8 ft) | 
| Draught | 6.60 m (21 ft 8 in) | 
| Depth | 6.7 m (22.0 ft) | 
| Installed power | 342 NHP | 
| Propulsion | triple-expansion engine | 
| Speed | 10 knots (19 km/h; 12 mph) | 
| Armament | 
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Castillo de Olite was a cargo steamship that was launched in 1920 in the Netherlands as Zaandijk. She passed through a series of Dutch and Soviet owners, and at different times was renamed Zwartewater, Postyshev and Akademik Pavlov. In 1938 the Spanish Nationalist Navy captured her and renamed her Castillo de Olite. In the last days of the Spanish Civil War she was sunk with great loss of life while serving as a troop ship. A total of 1,476 Nationalist soldiers were killed, making it the worst ship sinking in the history of Spain.