Dutch Walrus Submarines for Morocco..Training and as first submarines!?
Walrus-class submarines are solely operated by the Royal Netherlands Navy (RNLN). They are considered as one of the most advanced non-nuclear attack submarines in the world. The Walrus-class was put into service for the first time in 1990 with the Dutch Navy.
The Walrus-class fleet comprises four ships, which include the S802 Walrus, S803 Zeeleeuw, S808 Dolfijn and S810 Bruinvis. The ships were built indigenously by Rotterdamse Droogdok Mij (RDM), which was a Norwegian shipbuilding and ship repair company operating out of Rotterdam.
The Dutch government is set to start a progressive refit programme, known as the Walrus-class sustainment programme, in 2013 to extend the service life of the boats to 2025. The programme will give the boats enhanced intelligence-gathering capabilities and the ability to meet modern ergonomic and technological requirements.
L-3 ELAC Nautik was contracted in June 2008 to upgrade the medium-range sonar systems of three of the four Walrus class submarines. Howaldtswerke-Deutsche Werft, a German shipbuilding company, was contracted in June 2009 to supply and integrate the second-generation escape system HABETaS into RNLN’s existing submarines.
In August 2010, Analox Military Systems was contracted to provide nine Sub Aspida devices for installation on the submarines. In June 2011, the Dutch Defence Materiel Organisation (DMO) awarded a contract to Kongsberg for supplying passive sonar processing systems (PSPS).
Electronic systems in the Walrus class submarines
"State-of-the-art stealth technologies allow the submarines to remain invisible to ships, aircraft or other submarine."
The four Walrus class ships are incorporated with modern electronics and an integrated sensor, weapon and command system (SEWACO). Control and surveillance of platform and SEWACO systems are concentrated in the central control system (CCS) located towards the centre of the submarines.
The attack submarines feature Geautomatiseerd Informatieverwerkend Presentatie Systeem (GIPSY), an integrated information and presentation system developed by Holland Signaal (HSA). All the important subsystems of SEWACO and towed passive long range sonar system are fully integrated into the GIPSY.
Weapons and armaments
The submarines are armed with four 21in Honeywell Mk 48 Mod 4 and Mk 48 ADCAP. The ships can carry 40 mines in lieu of torpedoes.
They can also be equipped with McDonnell Douglas Sub-Harpoon surface-to-surface missile (SSM). The Dutch government, however, has not purchased any SSMs for the submarines.
Propulsion
Walrus-class submarines are fitted with diesel-electric propulsion systems. There are three SEMPT-Pielstick 12-cylinder, four-stroke diesel engines. The lone main motor is an electric motor is manufactured by Holec.
https://www.naval-technology.com/projects/walrus-class-submarines/
The RNLN possesses four Walrus-class diesel-electric attack submarines. These vessels are 67.7 meters long with an 8.4-meter-wide beam and can travel up to 20 knots when submerged.
They can remain submerged for 60 days without surfacing. Their weapons systems are capable of firing torpedoes..
https://www.nti.org/analysis/articles/netherlands-submarine-capabilities/
Dutch submarine Walrus class
