Thanks bugsier for your input! Yes, it is really an interesting thread! And when the big naval powers were involved, it was even more interesting.
The first Exodus: The Basque exile.
The Basque Country is a strip of land between the mountains (very rich in minerals mountains indeed) and the Bay of Biscay, split between Spain and France, with a very different lenguage (Euskera, the name of the language, is not related to Latin, Germanic, Slavic, Semitic or North African languages, in fact, it is not related to any known language) and a strong sense of identity, an identity that is based in a deep Catholicism. The prevalent Basque party was PNV, a liberal (in Adam Smith´s sens of liberalism) nationalist party that was searching more autonomy from Madrid, very far ideologically from the Popular Front (much more alike to a "mix" between CEDA -non Falangist/fascist right wing alliance of parties- and Carloists, traditionalist monarchist-catholic party), but as the leftist alliance promised the much desired autonomy, PNV was aligned with the Popular Front, and the Basque population was split between this dichotomy.
After the failure of July´s coup d’état, the main objective of the Rebellion in the North was to separate the republican North from the French border, and later conquest one to one the 3 Basque Provinces, then the Cantabrian region with the city and port of Santander and finally Asturies and her mines. So, the first objective was Irun right over the border conquered in late August 1936, then the city and port of San Sebastian, the main urban center of Gipuzcuoa , and finally the fishery harbours of Pasajes and Zumaya, which fell to the rebels in September 1936.
With the fall of this harbours (San Sebastian, Pasajes and Zumaya), a continuous stream of refugees crossed the French border. But many others went to Bilbao, many of them by sea.
Danak Ondo was a steel drifter with diesel engine, built at Pasajes, and gone to Bilbao in September 1936, the recently created Basque Navy seized the vessel and used it as a training vessel for harbour pilots. Later she fleed to Santander, and then to France. After the end of the war, the owner retrieved her and continued with her fishing work.
Marcos is a fishery drifter, wooden made and with steam reciprocating engine. Built in Zumaya, it was a little vessel, a prevalent model in the Basque coastal fishery fleet. Gone to Bilbao with the fall of Guipuzcoa, she was seized by the Basque Navy and used as a minesweeper with the numeral D17.
After the fall of Bilbao, she went to Santoña and during the evacuation of this Cantabrian harbour, she ran aground and was a complete loss.
Sevaral other fishing vessel from Guipuzcoa went to Bilbao in September 1936 and were used as minesweepers:
Mourisca was a british made dirfter from Vigo, of steel contruction and with a reciprocating steam engine. She was at Bilbao at the beginning of the civil war, early in 1937 she was seized and renamed D4. First she was used as a MCMs vessel, but later she was employed as a laison ship between Bilbao and Bayone. With the fall of Bilbao she was interned in Bayone until she was retorned to her owners in 1939.
Eduardito was also a dirfter, wooden made but with a diesel engine, she was made at Pasajes, and registered in San Sebastian. In early 1937 she was seized, militarized and converted in a minesweeper and used to clear the access routes to and from Bilbao. During the bombings of Portugalete (the main base of the Basque Auxiliary Navy) in June 13th 1937, Eduardito was bombed and sunk.
One of the vessels that left San Sebastina in September 1936 was the german built yatch Loli II. A wooden made and diesel powered luxurious boat was owned by Duke of Cubas. She went to Bilbao with gipuzcoan refugees and was seized by the government and renamed Severiano Asarta and alocated as a laisson ship between Bilbao and Bayonne. Later in June 1937 she was again used shipping basque and republican refugees to Santander. And with the fall of this cantabrian harbour, Severiano Asarta went to Bayonne and was interned in that french port until the end of the war.
In 1939 she was returned to her owner, and late in that year sold to the Spanish Navy as state yatch for Generalissimo Franco and renemed Azor. In 1946 she was witness of a critical meeting between Franco and the uncrowned king Don Juan (father of the former king, Juan Carlos I) who was forbiden to step spanish soil, so the meeting was at sea, off San Sebastian, arriving in the ketch Saltillo. In that meeting it was decided that Don Juan´s heir, Juan Carlos, will be trainied in spanish militry academies as probable (and just "probable") Franco´s succesor.
In 1948 she was converted in a fishery patrol boat and renamed V-0, and was used until late December 1982, when she was paid off and sold to a private owner in Galicia and briefly used as floating restaurant. In 2005 she was sold to a dutch owner and now is currently in Holland, being the one and only survivor of all the vessels involved in the SCW.
As the war in the Basque country progressed, the Nationalist fleet made an effective blocade to Bilbao, having several tense situations with the RN, this situation was even worse when the population begun to flee from the besieged city by sea. In May 6th 1936, a luxurious steam yatch, Goizeko Izarra, owned by Mr. Sota, a well known basque industrialist, a firm supporter of the basque nationalism, and main share holder of Sota y Aznar Shipping Line, and also of Euskalduna Shipyards, was put under the International Red Cross ensign and used to transport refugees to Pauillac. The same day, the ocean liner SS Habana sailed from Bilbao with refugees to La Pallice.
Within the 3 miles limit, both vessels were escorted by the armed trawlers Bizkaya (qv) and Gipuzkoa (qv), and in international waters by the battleship HMS Royal Oak and 4 destroyers of the F class, including the leader, HMS Faulknor.
In May 9th 1937, a convoy of 3 french ships, the twins Chateau Palmer and Chateau Margaux from Worms et Cie, and Carimare sailed from Bilbao to La Pallice.
In international waters, the vessels were escorted by a powerful french squadron composed by the battleships Lorraine and Provence, the cruiser Emile Bertin and the destroyers La Fantasque and Terrible.
During June, the francoist land forces were able to breech the Iron Belt, a strong (but wrongly designed: there was no depth enough for an effective defence of the city) fortified line around Bilbao, in June 16th 1937 two of the last ships with refugees fleeing from that harbour, SS Cabo Corona (one of the smallest steamers of Ybarra Lines fleet) and SS Galea broke the blocade and sailed to the west, until reach the safe (for a while) republican port of Santander.
In June 19th, early in the morning the first francoist troops begun the ocupation of Bilbao, and by the end of the afternoon the red and yellow flag replaced the republican tricolour from the City hall balcony.
Two days later, the french steamer SS Tregastel was intercepted by the francoist cruiser Cervera (qv) within the 3 mile limit, and caused an incident with the french aviso Vauqouis. Tregastel was owned by France Navigation, a company owned by the French comunist party and was manned by a comunist crew, and thus very involved in smuggling war material to the republicans. But in this ocation, she was just transporting basque children refugees to Santander, so Tregastel was relesed this time.
Credits: When I ran out of information about more spanish vessels, Colombamike gave me the drawings and data of the minor basque/republican vessels, so he was aiding me since the inception of this post. Lots of thanks! Hood and Gollevainen kindly allowed me to use their magnificent drawings of RN ships. I also used Novice well done liner Habana (drawn as Alfonso XIII) with minimal modifications. Lot of thanks! The color of the fishing vessels was obtained from an oil on canvas of the prewar basque fishing fleet at Pasajes, but I don´t know if is the exact livery was alocated to the correct vessel. My appologies. Unfortunatelly, until now I had little or no refferences about the exact appearance of the Marine Nationale squadron at the Bay of Biscay in May - June 1937, I hope to find the correct references and in a near future being able to depict these ships in this post. Cheers!