Small Underwater Vehicles

Subzero: a low cost Remotely Operated Vehicle for underwater inspection


Small underwater vehicles are used for applications in offshore engineering, oceanographic research and marine leisure activities. Steph Merry, Director and principle engineering consultant of Focus Offshore Ltd, contributed to the development of the UK’s first Autonomous Underwater Vehicle (AUV) “Autosub” and has worked with Seaeye Marine, a leading manufacturer of Remotely Operated Vehicles (ROVs). Her speciality is the design of energy-efficient submarines and she organised the 1st International Submarine Races for human-powered vehicles in 1989.


Human-powered submarines designed for the International Submarine Races
The following services for the development of ROV, AUV and crewed submersible prototypes are available through Focus Offshore:
  • Conceptual design
  • Hydrodynamic design
  • Performance optimisation
  • Experimental specification for physical modelling
  • Model testing and assessment
  • Audits and market surveys

Representative projects

Underwater vehicle projects directed by Steph include:

The AUV Autosub after successfully completing the first ever under ice shelf mission


Seaeye Marine’s Remotely Operated Vehicle (ROV) Cougar

Efficient Control Surface Design

Engineering subsystems for a
human-powered submarine

Testing a launch and retrieval system for Autosub