The Spanish Navy’s F110 frigates will feature the Kongsberg Maritime anti-submarine propeller system

The Norwegian Kongsberg Maritime has received an order worth NOK 200 million (EUR 18.6 million) with the Spanish shipyard Navantia to supply propeller systems for five of the future F110 frigates of the Spanish Navy. Kongsberg Maritime supplies specially developed propellers for frigates for the implementation of anti-submarine or ASW (anti-submarine warfare) operations.

These new generation ships are designed as a continuation of the frigate Navantia F-100/105 and as a replacement for the F-80, although unlike the first ships that carried the Finnish Wrtsil propellers, Navantia now relies on the Norwegian company Kongsberg is maritime. Each F-110 is equipped with two controllable pitch propellers or CPP systems (Controllable Pitch Propeller) from Norway. This is a development specially designed to minimize noise and vibration throughout the system. from the propeller blades to the shaft line to associated devices such as the bearings and the hydraulic unit.

The ships involved in ASW operations, one of the many roles of the F-110, must meet the high requirements for a minimum level of submarine radiation noise or URN (Underwater Radiated Noise), initial cavitation speed or CIS (Cavitation Inception Speed). , Pressure pulses, etc. It is noteworthy that Navantia in the selection process for the F-110 propeller tests of the scale models at the Dutch marine research institute MARIN (Maritime Research Institute Netherlands) and at the CEHIPAR (Center for Hydrodynamic Experiences of El Pardo), an ETA ( National Institute of Aerospace Technology) Esteban Terrada’s dependent center in El Pardo (Madrid) to verify that the required objectives have been achieved.

Unlike other engine designers, this company has its own hydrodynamics research center in Kristinehamn, Sweden, known around the world for its pioneering work in hydrodynamics and advanced design. Equipped with two cavitation tunnels, this center has been in operation for more than 40 years and has tested around 1,400 waterjet propellers and engines to refine and test the design. Kongsberg Maritime Propellers offer good fuel economy, low vibration and noise levels and minimal cavitation.

Egil Haugsdal, President of Kongsberg Maritime, said: We are very excited to be working with Navantia on this project. They are a world class company and experts in shipbuilding. This order again confirms the recognition of the Kongsberg shipbuilding industry as the world market leader for ship propulsion systems. (Julio Maz Sanz)

Photo: Digital image of the future frigate F-110, where the propellers can be seen in the stern (rear). (Navantia photo)

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