


| Shipyard / Year | S.E.C.N. - Sestao / 1945 | |
| Owner | Naviera Pinillos | |
| Name | Tajo | |
| Owner / Year | Naviera Letasa / 1966 | |
| Name | Tajo | |
| Dead weight | 2,742 | MT |
| Gross register | 2,747 | GRT |
| Length | 94.8 | metros |
| Breadth | 13.1 | metros |
| Depth | 7.6 | metros |
| Propulsion | Reciprocating quadruple expansion | |
| Power | 1,800 | H.P. |
| Bought | 1967 | a |
| Owner / Year | Naviera Letasa / 1966 | |
| Name | Tajo | |
| Sold | 1970 | a |
| Owner | Naviera Dinamar | |
| Name | Dinamariola | |
| Owner / Year | Cía. Técnica de Gestión Naval / 1971 | |
| Name | Dinamariola | Fire | 07/01/1972 - Bejaia (Algeria) | Scrapped | 1972 - Burriana |


| Shipyard / Year | Blyth Shipb. & Drydocking Co. / 1920 | |
| Owner | Hijos de Astigarraga | |
| Name | Bachi | |
| Owner / Year | Compañía Naviera Bachi / 1931 | |
| Name | Bachi | |
| Owner / Year | S.A. Cooperativa di Nav. Garibaldi / 1936 | |
| Name | Bologna | |
| Owner / Year | Compañía Naviera Bachi / 1937 | |
| Name | Bachi | |
| Owner / Year | Compañía Naviera Vascongada / 1951 | |
| Name | Alejandro Zubizarreta | |
| Owner / Year | Compañía Naviera Vascongada / 1957 | |
| Name | Abasolo | |
| Owner / Year | Ramón Garzón González / 1959 | |
| Name | Abasolo | |
| Dead weight | 5,283 | MT |
| Gross register | 3,071 | GRT |
| Length | 100.1 | mtr |
| Breadth | 14.2 | mtr |
| Depth | 7.1 | mtr |
| Propulsion | Reciprocating triple expansion | |
| Power | 1,150 | H.P. |
| Speed | 10 | knots |
| Bought | 1967 | a |
| Owner | Ramón Garzón González | |
| Name | Abasolo | |
| Sold | 1974 | a |
| Owner | Naviera Butrón | |
| Name | Nogales | Scrapped | Gijón - 1976 |

| Shipyard / Year | William Gray and Co. / 1910 | |
| Owner | La Tunisienne Steam Navigation Co. | |
| Name | Camerata | |
| Name / Year | Ronturn / 1928 | |
| Name / Year | Everards / 1933 | |
| Owner / Year | Empresa Nacional Elcano / 1938 | |
| Name | Castillo Fuensaldaña | |
| Owner / Year | Naviera Crú, S.A. / 1957 | |
| Name | Cru Mediterraneo | |
| Owner / Year | Marcosa / 1961 | |
| Name | Sendye | |
| Dead weight | 6,180 | MT |
| Gross register | 3,726 | GRT |
| Length | 106.7 | mtr |
| Breadth | 15.3 | mtr |
| Depth | 7.2 | mtr |
| Propulsion | Reciprocating triple expansion | |
| Power | 1,280 | H.P. |
| Bought | 1967 | to |
| Owner | Marcosa | |
| Name | Sendye | |
| Scrapped | Santander / 1968 | |

| Shipyard / Year | Euskalduna / 1930 | |
| Owner | Compañía Marítima del Nervión | |
| Name | Mar Negro | |
| Owner 1967 | Transportes de Petróleo-Naviera Castilla | |
| Name | Rio Pisueña | |
| Dead weight | 7,600 | MT |
| Gross register | 6,632 | GRT |
| Passengers | 48 | |
| Length | 128.2 | mtr |
| Breadth | 16.5 | mtr |
| Depth | 10.4 | mtr |
| Propulsion | 2 x Burmeister & Wain 8C-4T | |
| Power | 3,750 | H.P. |
| Auxiliary | B&W - 2 x 150 H.P. + 1 x 105 H.P. | |
| Dynamos | 2 x 100 kW + 1 x 70 kW - 220 VDC | |
| Speed | 13 | knots |
| Bought | 1970 | a |
| Owner | Transportes de Petróleo-Naviera Castilla | |
| Name | Rio Pisueña | |
| Sold | 1971 | to |
| Owner | Navimex - Veracruz (México) | |
| Name | Rio Frio | Scrapped | Kaohsiung (Taiwan) - 1973 |



| Shipyard/Year | Permanent Metals / 1943 | |
| Name | R. F. Peckham | |
| Owner / Year | Fernando Pereda Aparicio / 1952 | |
| Name | Rio Tajo | |
| Owner / Year | Nicomedes García / 1962 | |
| Name | Rio Tajo | |
| Owner / Year | MARCOSA / 1967 | |
| Name | Rio Tajo | |
| Dead weight | 11,317 | MT |
| Gross register | 7,696 | GRT |
| Length | 139.7 | mtr |
| Breadth | 17.4 | mtr |
| Depth | 8.7 | mtr |
| Propulsion | Reciprocating triple expansion | |
| Power | 2,500 | H.P. |
| Speed | 11 | knots |
| Bought | 1975 | to |
| Owner | MARCOSA | |
| Name | Rio Tajo | |
| Scrapped | Santander - 1976 | |
