The history of this ship is closely linked to that of the Ulla and the Turia. The three are ships belonging to the Spanish Navy and it was this that yielded them for their subsequent sinking in Murcian coastal waters, (Resolution of the Ministry of Defense 236/1998 of September 10, 1998, BOE 224 of September 18, 1998) . The Navy, in addition to giving the three ships free, was in charge of their preparation, conditioning and subsequent sinking: the Nalón sank on June 6, 1999 in the Bay of Mazarrón.

The M-21 Nalón and eleven other minesweepers of this class were the first practical demonstration of the Spanish-North American agreements, and were transferred to the Spanish Navy as a consequence of the so-called MDAP (Mutual Defense Assistant Program, or Mutual Defense and Aid Program). ), signed between Spain and the United States on September 26, 1953, which in its day meant the resurgence of a Navy whose units were mostly survivors of the 1936-39 civil war.

El Nalón, one of the “Ducklings Yankis” known as such by Spanish sailors, because he usually sails in a row, served from the beginning as minesweepers, until 1980 when he began to serve as a Patrolman; first as PVZ-51 (Zone Surveillance Patrol) and later as P-51. After almost 40 years of service, in 1993 he was discharged from the Navy.

Currently, and given the passing of the years, the ship has deteriorated to the point that it is NOT RECOMMENDED to visit the inside.



Autonomous Community: Murcia

Provincia: Murcia

Localidad: Mazarrón



Apelativo: M21 (P51) - Nalón

Año del hundimiento: 1999

Causas: Hundido como arrecife artificial en la Bahía de Mazarrón el 6 de junio de 1999.

Año de construcción: 1950

Lugar: Astilleros "South Coast Co. Newport Beach CA"; U.S.A.

Eslora: 44.5

Manga: 8.5

Profundidad máxima: 35

Profundidad media: 30

Profundidad mínima: 28