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During a refit in 2008, Nautilus received a 10.5-metre (34 ft) extension in the mid-section and a new bow thruster among other things. The lengthening increased the displacement from 223 t (219 long tons) to 340 t (335 long tons).
It is expected that Nautilus will reach the end of her lifecycle in 2026/27.
References
^ "Duikvaartuigen" (in Dutch). Ministerie van Defensie. Retrieved 14 June 2023.