Editing Walrus-class submarine (section)

{{Short description|Attack submarine class of the Royal Netherlands Navy}}
{|{{Infobox ship begin}}
{{Infobox ship image
 | Ship image =  4 walrusklasse onderzeeboten.jpg
}}
{{Infobox ship class overview
 | Name=''Walrus'' class
 | Builders =[[Rotterdamsche Droogdok Maatschappij]]
 | Operators = {{navy|Netherlands}}
 |Cost= [[Guilder|ƒ]]500 million per unit (1992)<ref>{{cite web|author=Jaime Karremann |url=https://marineschepen.nl/kosten-onderzeeboten.html |title=Hoeveel kost de Onderzeedienst? |publisher=marineschepen.nl |date=2013-03-15|language=nl|access-date=2018-03-18}}</ref>
 | Class before =*{{sclass|Dolfijn|submarine|4}}
*{{sclass|Zwaardvis|submarine|4}}
 | Class after = {{sclass|Orka|submarine|4}}
 | Subclasses = 
 | Built range =1979–1992
 | In commission range = 1990–present
 | Total ships building = 
 | Total ships planned = 6<ref name="Nooteboom144">Nooteboom (2001), p. 144.</ref>
 | Total ships completed = 4
 | Total ships cancelled = 2
 | Total ships active =  3
 | Total ships laid up = 
 | Total ships lost = 
 | Total ships retired = 1
 | Total ships preserved = 
}}
{{Infobox ship characteristics
 | Hide header = 
 | Header caption = <ref name="Horneman1011">Horneman (2018), pp. 10-12.</ref><ref name="Amstel59">van Amstel (1991), p. 59</ref><ref name="Nooteboom182">Nooteboom (2001), p. 182.</ref>
 | Ship class=
 | Ship type =  [[Diesel-electric transmission|Diesel-electric]] [[attack submarine]]
 | Ship displacement =*2,450 t surfaced,
* 2,800 t submerged,
* 1,900 t standard
 | Ship length ={{convert|67.725|m|ftin|abbr=on}}
 | Ship beam ={{convert|8.40|m|ftin|abbr=on}}
 | Ship draft ={{convert|6.60|m|ftin|abbr=on}}
 | Ship propulsion = *1 shaft (5 blades)
*3 x [[SEMT Pielstick]] PA4 200 VG [[diesel engine]]s {{cvt|6300|hp}} 
*1 x HOLEC electric motor 
*420-cell [[VARTA]] batteries
 | Ship speed =*{{convert|13|kn}} surfaced,
* {{convert|21|kn}} submerged
 | Ship range =  {{convert|18500|km|nmi|abbr=on}} at {{convert|9|kn|abbr=on}}
 | Ship endurance = 
 | Ship test depth =  >{{Convert|300|m|abbr=on}}
 | Ship complement =  49 to 52
 | Ship sensors =*'''Radars''':
* [[Signaal]]/[[Decca Radar|Decca]] 1229
* [[Signaal]] ZW-07
* Argo Phoenix I
* '''Sonar Systems''':
* Thomson Sintra TSM 2272 Eledone Octopus
* GEC Avionics Type 2026 towed array
* Thomson Sintra DUUX 5 passive ranging and intercept
* '''Fire-control system''':
* [[Thales Nederland|HSA]] GIPSY (SEWACO VIII)
 | Ship EW = 
 | Ship armament =
* 4 × 21-inch (533 mm) [[torpedo tube]]s 
*20 × [[Honeywell]] [[Mark 48 torpedo|Mk 48]] torpedoes or Honeywell [[Mark 37 torpedo|NT 37 C/D/E]] torpedoes
*[[Harpoon (missile)|UGM-84 Harpoon]] [[Surface-to-surface missile|SSM]]  
*40 [[Naval mine|mines]]
 | Ship notes = 
}}
|}

The '''''Walrus''-class submarine''' is the only [[submarine]] class currently in operation in the [[Royal Netherlands Navy]]. The boats have been in service since 1990 and are all named after [[sea mammal]]s.