Editing Upholder/Victoria-class submarine (section)

===Machinery===
The submarines are powered by a single-shaft diesel-electric system. They are equipped with two [[Paxman Valenta]] 1600 RPS SZ [[diesel engine]]s, each driving a {{convert|1.4|MW|lk=on|adj=on}} GEC electric [[alternator]]. There are two 120-cell [[Chloride batteries]].<ref name=gardiner532/><ref name=perkins196>Perkins, p. 196</ref> The batteries have a 90-hour endurance at {{convert|3|kn|lk=in}}.<ref name=perkins196/> The submarine is propelled by a {{convert|4.028|MW|adj=on}} GEC dual [[Armature (electrical engineering)|armature]] electric motor turning a seven-blade fixed pitch propeller.<ref name=perkins196/> This gives the vessels a maximum speed of {{convert|12|kn}} on the surface and {{convert|20|kn}} submerged. They have a diesel fuel capacity of 200 tons, giving a range of {{convert|8000|nmi|lk=in}} at {{convert|8|kn}} and {{convert|10000|nmi}} at [[Submarine snorkel|snorting]] depth.<ref name=gardiner532/><ref name=cocker123/>