The Walrus-class submarine is the only submarine class currently in operation in the Royal Netherlands Navy. They have been in use since 1990 and are all named after sea mammals.

Design

The Walrus-class submarines are unusual in that instead of a cross-shaped assembly of stern diving planes and rudders, they mount four combined rudders and diving planes in an "X" configuration. This tail configuration was first tested in 1960 on the United States Navy's USS Albacore (AGSS-569), but has since been used only by the Walrus class, all Swedish Navy submarines since the Sjöormen class, the Royal Australian Navy's Collins class and the German Type 212A.

Ships

• S802 Walrus

• S803 Zeeleeuw

• S808 Dolfijn

• S810 Bruinvis

General characteristics

• Displacement: 2,350 t surfaced, 2,650 t submerged, 1,900 t standard

• Dimensions: 67.73 x 8.4 x 6.6 m

• Propulsion: 3 diesels, diesel-electric, 5,430 shp, 1 shaft, 5 blades

• Speed: 13 knots surfaced, 20 knots submerged

• Complement: 50 to 55

• Surface Search Radar: Signaal/Racal ZW 07

• Sonar Systems: Thomson Sintra TSM 2272 Eledone Octopus, GEC Avionics Type 2026 towed array, Thomson Sintra DUUX 5 passive ranging and intercept

• Fire Control: HSA SEWACO VIII action data automation, GTHW integrated Harpoon and torpedo FCS

• Armament: 4 x 21 inch (533mm) torpedo tubes (20 Honeywell Mk 48 or Honeywell NT 37 torpedoes, mines, SubHarpoon SSM)