She's one of the 'Strider' type, built in Japan in the mid seventies. Four of them carried ... BOUNTY names ; JADE, OPAL, SAPPHIRE and TURQUOISE BOUNTY, and looking at the length of the name it must be one of the latter.
Thanks for your feedback. She's been confirmed as the TURQUOISE BOUNTY who came into Dover in the very early 80s after a crankcase explosion.
After repairs she sailed again only for the same thing to happen & she returned to Dover, remaining in port for about three weeks.
I sailed on all the Bounty ships. They were run by Sea Containers, a Bermudan shipping company founded by James Sherwood. They were designed to ship containers to ports with no gantry cranes. They had their own gantry crane, a hole through the middle of the accommodation and a ramp that could be lowered to the quay to allow container tractors to drive on board and take the containers ashore. They used to load reefer boxes full of halal mutton in Geelong and Fremantle and discharge in Sharjah and Bandar Shapour. On the way back they'd call in at Colombo and Singapore. British officers, Filipino crew - 20 altogether.
They also had sister Crown ships (Aqaba Crown etc.) that did Felixstowe - Le Havre - Jeddah - Hodeidah - Aqaba and back.