The coastal tanker player said it has bought 100% of SubseaVision for £2.5m ($4.13m).
The UK company runs five remotely operated vehicles (ROVs) foroil and gas survey work.
Its pre-tax profit in the year to 31 March 2013 was £0.4m,with assets at £0.7m.
Fisher CEO Nick Henry said: "The acquisition of SubseaVision is a further step in our growth, providing niche specialist services forthe offshore energy sector."
