The original tug boat went to sea in 1967. It got bought in 2004 and put through years of interior and exterior remodelling, which included a spa, a gym, sauna, whirlpool bath and luxurious suites. Then it was reborn under the name Ariete Primo, a kick-arse ship that you can use to go to lusty beaches in the Pacific or push oil tankers in the Indian Ocean. [James List]