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Minelayer Júpiter
Class overview
Builders	SECN
Operators	Spanish Navy
In commission	1935–1977
Completed	4
Retired	4
General characteristics
Type	Minelayer
Displacement	2,100 long tons (2,100 t) standard 2,600 long tons (2,600 t) full load
Length	100 m (328 ft 1 in)
Beam	12.36 m (40 ft 7 in)
Draught	3.6 m (11 ft 10 in)
Propulsion	2 shaft Parsons type geared turbines 2 Yarrow boilers 5,000 hp (3,700 kW)
Speed	18 knots (33 km/h; 21 mph)
Range	3,700 nmi (6,900 km) at 12 knots (22 km/h; 14 mph)
Complement	180
Armament	4 × 120 mm (4.7 in) guns (4×1) 2 × 76 mm anti-aircraft guns 3 × 20mm 264 mines or depth charges

Júpiter-class minelayers was a group of four vessels of the Spanish Republican Navy built during the Spanish Republic. Three of them came into service during the Civil War after joining the rebel side.

Design and construction

The minelayers were commissioned by the Government of the Republic to SECN shipyards at Ferrol in 1935, a year before the start of the Spanish Civil War. The construction had been approved by the Cortes on 27 March 1934, after a proposal from the minister of the navy Juan José Rocha García. The warships of the class were designed to protect the Balearic islands in the event of a war between France and Italy.

Operational history

Civil War

The first three ships of the class were seized by the insurgents and served in the rebel fleet at the very beginning of the war. Their first deployment was the blockade of Bilbao. Due to the lack of destroyers in the Franco's fleet, and the potential of their armament, the main mission of these vessels was not minelaying, but to face Government units in open combat, despite their slow speed.

Júpiter

Along with Vulcano, Júpiter was one of the main players in the blockade of international shipping in the ports of Biscay, where she took part in the capture of several merchantmen, especially the British Candleston Castle, Dover Abbey and Yorkbrook, the French Cens and a number of Basque Auxiliary Navy trawlers during the second half of 1937. She also laid four minefields off Santander and Gijón, from April to July 1937. The rebel battleship España was lost on 30 April after hitting by accident one of her mines at Santander. There were only four casualties among España's crew.

On 17 July, while on patrol off Gijón, Júpiter caught two British cargo ships while they were attempting to run the blockade. One of them, Sarastone, managed to reach the harbor despite being fired on. The other steamer, Candleston Castle, stopped after the minelayer fired two shots across her bows. She was handed over by Júpiter to the auxiliary cruiser Ciudad de Palma, which escorted the captured merchantman to Ferrol. A fruitless sortie was launched from the French port of Saint Jean de Luz by the Royal Navy battleship HMS Royal Oak and the destroyer HMS Basilisk.

She engaged the Basque Auxiliary Navy destroyer Císcar on 10 August off Gijón. During this exchange of fire, Júpiter's gunfire accidentally straddled the British destroyer HMS Foxhound. Occasionally, she also provided support fire for the rebel troops inland. On 24 August 1937, after the fall of the port of Santoña, Júpiter, along with other naval units was called from Bilbao to watch the British steamer Seven Seas Spray, taken in custody by Nationalist troops while attempting to evacuate Basque troops as part of the ill-fated Santoña Agreement between the Italian Corpo Truppe Volontarie and the Basque Nationalist Party.

On 5 October, while she was escorting the seized freighters Dover Abbey and Yorkbrook to Ribadeo, the former vessel sent a distress message to HMS Resolution, giving the position and course of the convoy and claiming that her capture had taken place outside territorial waters. Actually, they have been caught by armed trawlers 2 nautical miles (3.7 km) off shore, well inside Spanish maritime boundaries. Júpiter successfully outran the British battleship and the convoy reached destination without incident.

At least five minor vessels carrying refugees and soldiers of the Republican army where seized by the minelayer after the fall of the last government's strongholds on northern Spain by the end of October.

On Christmas Day 1937 Júpiter shelled the port of Burriana, near Castellon, in the Mediterranean coast, where the British freighter Bramhill was at anchor. The merchant was hit by several rounds, specially on her bow, and had to withdraw to Marseille to undergo repairs.

Towards the end of the war, along with the auxiliary cruiser Mar Negro, she supported the landing of an infantry division on Mahón, Menorca, after the Republican surrender of this island, on 9 February 1939. She was one of the units involved in the blockade of Alicante, where thousands of refugees gathered in order to flee Spain when Franco's victory was in sight. Assisted by her sister ships, Júpiter entered the port on 31 March, the day before the official end of the conflict, in order to land the 121st and 122nd Galician Regiments.

After the Spanish Civil War, in December 1940, Júpiter carried out an undercover reconnaissance mission around Gibraltar with Admiral Canaris, General Lang and a Spanish officer aboard. The goal was to gather intelligence about the British fortifications and boom defenses as a first step toward the proposed Operation Felix.

Vulcano

Vulcano temporarily blocked the entrance to Gijon of the British merchants Stanray and Stangrove. At the end of the war in the north she joined a naval squadron which drove back the steamers Hillfern, Bramhill, Stanhill and Stanleigh off Cape Peñas, seizing a number of small Republican vessels crowded with refugees in the process. During this period she shelled, without success, the British Thorpebay when this steamer entered the port of the Musel. Between the last months of 1937 and 1939 Vulcano was active in the Mediterranean, where she was part of the rebel fleet which bombarded Castellon, Burriana and Vinaròs on Christmas Day 1937. She played a key role, along with her sisters ships, in ferrying troops after Franco's army reach the coast between Valencia and Barcelona in April 1938.

On 17 October 1938, she seized the Soviet cargo ship Katayama, of 3,200 tons. She also played a secondary role in the capture of the Greek merchant Victoria by the auxiliary cruiser Mar Cantábrico and the British Stangrove by the gunboat Dato, in the final months of the civil war. All these freighters joined the Spanish merchant fleet at the end of the conflict.

Perhaps the most famous action of Vulcano is the chase and capture of the Republican Churruca-class destroyer José Luis Díez off Gibraltar, in the course of a battle fought as close as 50 metres (160 ft) between the ships involved. José Luis Diez eventually became stranded in Catalan Bay, in the territory of Gibraltar, the last day of 1938. The destroyer was turned over to Franco's government after its recognition by Britain as the legitimate authority in Spain.

She was the leading unit of an aborted landing at Cartagena on 7 March 1939, after the withdrawal of the Republican fleet from its bases and its internment at Bizerte. The operation was mounted on the belief that anti-communist Republicans had taken over the port once the Government navy fled. However, loyalist forces retook control of the coastal batteries around the harbour. All the ships received the order of aborting the operation, but two transports, Castillo de Olite and Castillo Peñafiel, deprived of radio, continued toward Cartagena undeterred. They were the former Soviet steamers Postishev and Smidovich, of 3,545 and 2,485 tons respectively, which had been seized by the Nationalists at high seas. Castillo de Olite was sunk by a 381 mm (15 in) battery close to the docks, with a loss of life of almost 1,500. Meanwhile, Castillo Peñafiel had a narrow escape, harassed by Republican aircraft. In a letter to General Franco, Admiral Francisco Moreno put the blame on Vulcano's commander for his failure to prevent the departure of the freighters, as ordered by Moreno himself. Vulcano apparently gave a green light to the transports after receiving contradicting orders from the high command to proceed.

Along with her sister ships, Vulcano landed two infantry battalions at Alicante on 31 March, the day before the official end of hostilities.

Marte

Marte was the last minelayer of the class to be commissioned before the end of the civil war. Neptuno, the last of the batch, was not completed until November 1939, seven months after the war was over. Marte was released to the Nationalist navy on 11 November 1938. The minelayer departed from El Ferrol in December 1938 to take part in the chase of the Republican destroyer José Luis Díez, which had taken shelter in Gibraltar. Given the inexperience of her crew, Marte didn't play any major role in the neutralization of the Republican warship. Later, in January 1939, while based at the port of Palma, Marte participated in gunnery trials off Majorca and in blockade activities along the Catalan coast and the Gulf of Lion. In February, she relieved her sister Júpiter from her blockade duties off Catalonia, and on 21 February she attended a naval parade at Salou. On 7 March 1939, during the ill-fated landing on Cartagena, Marte loaded troops and cargo at Castellon before the operation was cancelled. Along with her sisters, she patrolled the Republican waters off Alicante in the waning days of the war. Marte took part in one of the last international maritime incidents of the war on 19 March 1939, when she prevented the British steamer Stanbrook from entering Alicante. The ship, chartered by the Republican government, went back to Oran, Algeria. The Stanbrook eventually reached the Spanish port on 27 March, after the Nationalist side displayed some indulgency toward the evacuation of refugees in return for the British recognition of Franco's legitimacy. Two days later, Stanbrook left Alicante bound for Oran, crowded with at least 2,000 people, one of the last ships to either enter or flee Republican Spain. Her Welsh skipper, Captain Archibald Dickson, later killed during the sinking of his ship in World War II, is today remembered as a hero in Alicante.

Refurbishment

Of the four vessels, only Júpiter and Vulcano took part in a modernization program after the agreements between Spain and the United States in the 1950s, and were reclassified as frigates. The modernization was held in Cartagena from 1958 to 1961. The antisubmarine and antiaircraft weapons were updated by adding a squid multiple mortar and Bofors 40 mm guns. The units were also fitted with radar. Both ships joined the frigate squadron along with those units of the first Pizarro class. Júpiter was written off the Navy List on 23 November 1974, and Vulcano was used as a store ship from 12 March 1977 until her final decommissioning on 30 April 1978, this being the last warship to be removed from service of those who participated in the Civil War.

Marte and Neptuno remained unchanged until their decommissioning in 1971 and 1972 respectively.

Units of the class

References

1. "Historia Naval de España: Minador Vulcano". Todoavante (in Spanish). Retrieved 12 September 2017.
2. "La Ocupación de Tánger" (PDF). Boletín de Infantería de Marina (in Spanish). July 2016. p. 11. Retrieved 12 September 2017.
3. Pérez, Artemio Mortera (2008). "Los minadores de la clase "Jupiter" (1ª parte)". Revista española de historia militar (in Spanish) (93). ISSN 1575-9059.
4. ^ Moreno de Alborán y de Reyna, Fernando: La guerra silenciosa y silenciada: Historia de la campaña naval durante la guerra de 1936–39. Madrid, 1998, v. 2. (in Spanish)
5. ^ El rastreo de minas (in Spanish)
6. ^ Log of insurgent cruiser Almirante Cervera Archived 2008-10-14 at the Wayback Machine (in Spanish)
7. Tres días después, el minador “Júpiter”, de patrulla frente a Gijón, apresaba al “Candlestone Castle”, no pudiendo evitar, pese a cañonearlo, que el “Sarastone” entrara en El Musel. El “Candlestone Castle” y el “Kellwyn”, de pabellón británico como los anteriores, habían salido el día uno de Julio de Santander hacia Francia con refugiados, protegidos por dos destructores y un acorazado ingleses. Después de ese viaje, ambos barcos llevaban varios días esperando para entrar en Santander, dirigiéndose a Gijón ante la imposibilidad de hacerlo en aquel puerto. El “Candlestone Castle” procedía de Burdeos y el “Sarastone”, también en lastre, había salido de Saint Nazaire. El “Candlestone Castle” fue conducido al Ferrol por el crucero auxiliar "Ciudad de Palma". Asturias Republicana Archived 2020-10-18 at the Wayback Machine (in Spanish)
8. Parliamentary debate, 21 July 1937
9. "British Vessel is Seized by Spanish Rebels - Battleship and Destroyer Dash from France". The New York Times. 19 July 1937. Retrieved 2012-09-23.
10. Gretton, Peter (1984). El Factor Olvidado: La Marina Británica y la Guerra Civil Española. Editorial San Martín, p. 385. ISBN 84-7140-224-6. (in Spanish)
11. Foreign Office: Index to the correspondence of the Foreign Office for the year 1937, Part 4. Kraus-Thomson, 1937, page 545
12. Moreno de Alborán y de Reyna, Fernando: La guerra silenciosa y silenciada: Historia de la campaña naval durante la guerra de 1936–39. Madrid, 1998, p. 278. ISBN 84-923691-2-4 (in Spanish)
13. Ordené reunir las presas para ser conducidas por el “Tito” a Ribadeo, ya que este bou debía de ser relevado por la tarde por el “Tritonia”. Al “Júpiter” le ordené escoltar los bous hasta verlos entrar en Ribadeo y al “Fantástico” le ordené continuar la vigilancia frente a Avilés. A mediodía se sorprendieron unos radios que el “Dover Abhey” dirigía al “Resolution”, dándole su situación 6 millas al NW de cabo Peñas. Indebidamente continuaron confundiendo cabo Vidio con cabo Peñas. Le decían habían sido obligados a parar en esa situación y que, aparentemente, eran conducidos a Ferrol. Como el “Resolution” contestó que se dirigía a su encuentro, arrumbé nuevamente al encuentro del convoy desde el N de cabo Peñas, donde me encontraba en aquellos momentos. A las 2h. 30m., los buques se encontraban a la altura del cabo Busto y navegaban sin novedad hacia Ribadeo. No viendo cerca el acorazado inglés, regresé nuevamente al cabo Peñas y las 15h. encontré al “Resolution” a la altura de Avilés. Dicho buque me pasó el siguiente despacho: De “Resolution” a “Cervera”.– Ruego me diga si tiene usted alguna información del barco mercante inglés “Dover Abhey”. De “Cervera” a “Resolution”.– Sí, vapores “Dover Abhey” y “Yorkbrook” fueron capturados esta mañana 2 millas al NE cabo Vidio y son conducidos a Ribadeo. Log of insurgent cruiser Almirante Cervera Archived 2008-10-14 at the Wayback Machine (in Spanish)
14. Relación de buques capturados por los nacionales Archived 2009-09-23 at the Wayback Machine (in Spanish)
15. Heaton, Paul Michael: Welsh Blockade Runners in the Spanish Civil War. Starling Press, 1985. Page 74. ISBN 0-9507714-5-7
16. Foreign Office: Index to the correspondence of the Foreign Office for the year 1938, Part 4. Kraus-Thomson, 1969, page 81
17. ^ Guerra Naval en Castellón (in Spanish)
18. Salas Larrazábal, Ramón & Jesús: Historia general de la Guerra de España. Rialp, 1986, page 393. ISBN 84-321-2340-4 (in Spanish)
19. ^ INFORMACION. "El final de la Guerra Civil en Alicante". www.diarioinformacion.com (in Spanish). Retrieved 2016-04-23.
20. Suárez Fernández, Luis (2005). Franco. Ariel, p. 188. ISBN 84-344-6781-X
21. A mediodía, encontrándome a 18 millas al N de Tazones, recibí un radio en claro del “Vulcano” en el que me decía salía un destructor de Gijón. Arrumbé a cabo Peñas y avisté al “Vulcano” con un vapor inglés y un destructor. Según me comunicó más tarde, a mediodía intentaron entrar los vapores ingleses “Mydol” y “Stanray”. Al entrar dentro del límite de las aguas jurisdiccionales este último, disparó y le ordenó parar, viendo que este barco metía a una banda, lo creyó capturado, pero como, al parecer, no paró las máquinas, el almirante inglés no concedió captura, diciendo que el barco había metido para escapar. Log of insurgent cruiser Almirante Cervera Archived 2008-10-14 at the Wayback Machine (in Spanish)
22. El “Vulcano” comunicó que a 1h. había encontrado al vapor inglés “Stangrove” que se dirigía a Gijón con luces apagadas. Al ser reconocido, se alejó hacia el N. Log of insurgent cruiser Almirante Cervera Archived 2018-06-13 at the Wayback Machine (in Spanish)
23. Log of insurgent cruiser Almirante Cervera Archived 2018-06-13 at the Wayback Machine (in Spanish)
24. Log of insurgent cruiser Almirante Cervera Archived 2008-10-14 at the Wayback Machine (in Spanish)
25. ^ Moreno de Alborán y de Reyna, Fernando: La guerra silenciosa y silenciada: Historia de la campaña naval durante la guerra de 1936–39. Madrid, 1998, v. 4, part 2. (in Spanish)
26. The José Luis Diez issue Archived 2008-03-15 at the Wayback Machine, a lecture by Dennis D. Beiso, Gibraltar, 2002
27. González Etchegaray, Rafael : La Marina Mercante y el Trafico Maritimo en la Guerra Civil. Editorial San Martin, Madrid, 1977, Appendix II. ISBN 84-7140-150-9
28. De la Cierva, Ricardo: La victoria y el caos: a los sesenta años del 1 de abril de 1939. Fénix, 1999, pp. 512-518. ISBN 84-88787-25-1 (in Spanish)
29. "Neptuno (1943)". Todoavante.es (in Spanish). Archived from the original on 9 May 2016. Retrieved 22 April 2016.
30. "Marte (1938)". Todoavante.es (in Spanish). Retrieved 22 April 2016.
31. Moreno de Alborán y de Reyna, Fernando: La guerra silenciosa y silenciada: Historia de la campaña naval durante la guerra de 1936–39. Madrid, 1998, v. 4, part 2, p. 144. (in Spanish)
32. Arias, Fernando: La Valencia de los años 30. Entre el paraiso y el infierno. Carena Editors, S.l., 1999, page 235. ISBN 84-87398-35-9 (in Spanish)
33. Republicanos. De Alicante hacia África.1939 (in Spanish)
34. "The British government assumed that Franco would overlook the activities of the occasional merchant ship." Graham, Helen: The Spanish Republic at war, 1936-1939. Cambridge University Press, 2002, page 422. ISBN 0-521-45932-X
35. Alicante recuerda al galés que salvó a miles de republicanos (in Spanish)
36. ^ Asamblea de Capitanes de Yate:La armada española. Editorial San Martín, 1978. Page 77. ISBN 84-7140-172-X (in Spanish)

• Mine warfare vessels of the Spanish Navy
• Ships built in Spain
• Military units and formations of the Spanish Civil War (National faction)
• Minelayers
• Spanish Civil War ships
• Spanish Republican Navy