The following ships have not been identified. I will be grateful to anyone who knows any name or data if sending me an email, both in case of totally sure or probable identification.
The first steamer was the Segundo. The following is not identified..
 The CAMPSA tanker berthed at other side was the Campoamor. The two identified by Paco Bolado were the hoppers Cadagua, Asua or Gobela, part of the Bilbao dredging equipment. The identified by Javier Careaga were, those of the upper arrow: 100 MT floating crane of La Naval and its service tug
Consor, to the right was the Monte Urquiola (the bigger vessel), and to the left, alongside one each other, the Villaviciosa and Villagarcia; those of the first intermediate arrow: suction dredger Euskalherria or Consulado de Bilbao, bucket ladder dredger Ibaizabal and 100 MT floating crane of the Junta de Obras del Puerto; the one of the second intermediate arrow: fishing ship Erandio or Tartanga; the last arrow points out to a landing craft owned by Elcano, that bought two type LCT-4 to the British Navy. Specs: displacement: 722 MT; length: 56.5 meters; beam: 11.8 meters; depth: 2.3 meters; propulsion: 2 diesel engines Paxman Ricardo 12 cylinders in V, 500 H.P each. They were bought in 1946 and were almost new because they were built in 1945, being named Foca and Morsa. They were sold in 1948 to the Spanish Navy and renamed BDK-1 and BDK-2, being scrapped in 1978 y 1983. Due to the identification of the different vessels the photo can be dated between May and November of 1948.
On the left the vessel in the background was the Trece, owned by Rafael Ferrer Malzárraga. She was later the Jaime Girona, after sold to Altos Hornos de Vizcaya.
Ships at Melilla. To the left was the Lola, with home port Málaga, that seems a small coaster. I found out the Covadonga data: she was a port tug built in 1910, owned by Sociedad Española de Minas del Rif. Length: 16.0 meters; Beam: 3.7 meters; Depth: 1.6 meters; Gross register: 38.3 GRT; Net register: 27.3 NRT. In the photo the home port was Cádiz, changed to Melilla in 1926. I don't have any data about her scrapping.
The San Sebastián old port. Can be seen the Cementos Rezola Nº 1, Piles and Manuel, the last two identified by Javier Careaga. The vessel maneuvering close to the port inlet is not yet identified.
The small tanker was the Campanilla, that was based there for supplying fuel to ships.
Javier Careaga has identified the berthed ship, that was the Cartes, because there was the doubt between her and her sister the Mercadal. The other identified were two of the four barges built by Astilleros del Cadagua for Flota Mercante del Estado de Paraguay. They were the Tatayiba and Pykysiry, being the other two Curupayty and Tuyuti. Their dead weigth was 480 MT; the gross register 518 GRT; the length 49.5 meters; the beam 10.4 meters and the depth 3.3 meters. They had auxiliary engines to generate the electricity for the rudder, deck and cargo machinery, lighting and accomodation. The same shipyard built an smaller refrigerated barge named Lomas Valentinas.
In the same years the same shipping company ordered several ships to Tomás Ruiz de Velasco.
At the far end was the German Apollo, built at Rendsburg in 1957. In 1972 she was flagged in Greece when sold to a Greek company, ad renamed Peliki. She was scrapped in Greece in 1984.
Javier Careaga has identified almost all vessel in this photo. The hopper Somo was built in 1930 in Netherlands for Junta de Obras del Puerto de Santander, together with her sister Raos. In 1962 she was transfered to Burriana.
Valencia. The vessels in both ends were not identified. After the above identification Chris found out that the one on the left was the Gladiator. He also found out that the one on the right was the Nordsoen.
The Verna Clausen was a Danish vessel with 2,530 TM of dead weight, built in Italia in 1948, that after several owners and names sunk in 1977 due a collision. Her first name change was in 1955, so the photo can be dated between 1948 and 1955. On other photo she can be seen at La Coruña together with the Caranza. By her bow was the tug España II, and alongside her the Cepsa only half seen. The Campoamor was owned by CAMPSA and the Bailen and Monteleon by CEPSA. The gun ship Magallanes was a Spanish Navy vessel that in 1958 was classified as frigate. By her aft was a Trasmediterránea ship, one of the sisters: Ciudad de Alcira or Ciudad de Salamanca. By her stern was the Ciudad de Valencia. The Llumeres was a small coastal vessel owned by Hermanos Varela. The ship at anchor close to the Campoamor was the Esperanza.
The ship at anchor was the Liberty vessel Alheli. She was built in 1943 as Henry Dodge, being Giovanni Amendola since 1946 and Alheli from 1961. She sunk on 24/April/1968 during a trip from Almería to Wilmington.
Close to her was the Campanilla. The vessels in the row were from right to left: El Saturno, Monte Iciar, Monte Serantes, Apolo and only showing a small part Monte Teide.