Vertical ship marks 50 years at sea

"Researchers have been showing off a 355 ft vertical ship in the Pacific Ocean, as it marks its 50th birthday.

FLIP, or Floating Instrument Platform, is owned by the US Navy, and flips from horizontal to a vertical position by pumping 700 tonnes of seawater into the 'handle' end."

http://www.bbc.co.uk/news/science-environment-18684075