Navantia closes the resistant hull of S81 “Isaac Peral” submarine.

Navantia has finalized, in the Cartagena facilities, the closure of the resistant hull of the S-81 ‘Isaac Peral’ submarine for the Spanish Navy, after the union of the last section of the ship.

S81 “Isaac Peral” submarine (Picture source: Navantia)

The event has been attended by the General Director of Programs from the MoD, General Salvador Álvarez Pascual; the Chief of the Cartagena Arsenal, Vice Admiral Aniceto Rosique Nieto; the Director of Engineering and Construction, Vice Admiral Manuel Martínez Ruiz; the Chief of the Logistics Division, Admiral Gonzalo Sanz Alisedo; the Head of the Naval Systems Department of the DGAM, Nicolás Lapique Martín, and the Head of the S-80 Program, Javier del Corral. On behalf of NAVANTIA, the Director of Operations and Business, Gonzalo Mateo Guerrero-Alcázar; the Director of the Shipyard and S-80 submarines Program, Agustín Álvarez Blanco; the Director of Navantia Sistemas, Vicente Santamaría Calvario, and the head of the S-80 Program Office, Ignacio Núñez.

The event began with a brief tour of the submarine, where the progress of the construction of both the S-81 and S-82 submarines was shown. Next, a brief presentation of the submarine’s construction process was made, after which the Director of the Shipyard of Cartagena and the General Director of Programs from the MoD has given a speech, highlighting the importance of this event and the S-80 submarines program.

The closure of the resistant hull is a crucial milestone in the construction of a submarine, as it appears as a complete vessel. Previously, the loading of all the main modules has been carried out, as well as a very high level of completion of the sections. The next step is the completion of the fitting works and the beginning of the testing stage.

This step represents a change of phase. The work in the submarine is now focused on its launching, following a formal and regulated process, based on overcoming safety milestones. This process begins with the tensioning when the submarine begins to receive electric current; then the battery boarding, to gain autonomy in power generation, and finally the floating and the sea trials.

The scheduled date for floating is October 2020.