HMS Challenger (K07)

HMS "Challenger" was a unique vessel in Royal Navy service — she was purpose built to support deep sea operations and saturation diving. However, she was commissioned in 1984, during a time when the Royal Navy was cutting back on expenditure, with the consequence that the "Challenger" was seen as an extravagance that the Admiralty could not afford. As a consequence, after less than ten years service, the ship was laid up and offered for sale. The ship was purchased by a company called Subsea Offshore, to be converted for work decontaminating hazardous waste dumped in the Baltic Sea and North Atlantic.

See HMS "Challenger" for other ships of the same name.