To replace the "Stena Discovery", Stena Line invested 100 million euro in rebuilding the existing ferries of the route. The Ro-Pax vessels were both lengthened and converted at the Lloyd Werft shipyard in Bremerhaven so that they could carry additional passengers. Both ships are now 240 metres long, the "Stena Britannica" being lengthened by 28 metres and the "Stena Hollandica" by 52 metres. The "Stena Britannica" returned to service on 12 March 2007 and the "Stena Hollandica" on 14 May 2007.