Mantis

A Mantis underwater vehicles operated by HMB Subwork of Great Yarmouth in the 1980s

Rigworker

The OSEL Rigworker around 1986

Dragonfly

OSEL’s modularised Dragonfly ROV, developed in conjenction with GEC Avionics. With its 12 thrusters it was the big brother of the Rigworker. It is being tested on Britoil’s Thistle field