 Instead of replacing the QE2 with a newer vessel, Cunard decided that it was more prudent to simply make improvements to her.Therefore, from 27 October 1986 to 25 April 1987, "QE2" underwent one of her most significant refurbishments when she was converted by Lloyd Werft at their shipyard in Bremerhaven, Germany from steam power to diesel.Nine MAN B&W diesel electric engines, new propellers and a heat recovery system (to utilise heat expelled by the engines) were fitted, which halved the fuel consumption.