Offshore Consulting Group (OCG) is a small engineering consultancy that was founded in 2015. OCG is based in London and led by Richard Gibson and Marios Christou.

Richard Gibson

Richard studied Civil Engineering at Imperial College London where he graduated with first class honours MEng degree and the Sir Bruce White Prize for Fluid Mechanics. He then completed his PhD in nonlinear wave mechanics at Imperial College before joining BP where he worked from 2005-2015.

Whilst at BP Richard worked in a wide range of roles, and on various projects, including: the design and construction of fixed platforms; the analysis of floating systems; Arctic engineering; metocean analysis; and structural reliability.

Richard is a chartered engineer with the Institution of Civil Engineers, and a chartered marine scientist with the Institution of Marine Engineering Science and Technology.


Marios Christou

Marios graduated with a first class honours MEng degree in Civil Engineering from Imperial College London, during which he spent his final year abroad at École Nationale des Ponts et Chausées, Paris. He then returned to Imperial College London to undertake his PhD on the topic of fully nonlinear waves and wave-structure interaction.

Marios then worked for five years as a Metocean & Offshore Structures Engineer at Shell in The Netherlands. This involved undertaking research as part of the working group member of several joint industry projects, which included analysing field measurements of raw wave data, examining limiting shallow water waves and the evolution of the wave spectrum as well as modelling infragravity waves. In terms of engineering design, Marios was involved in setting metocean design criteria, examining side-by-side and tandem offloading between a Floating LNG vessel and an LNG carrier and performing global motion, mooring & riser analysis for floating offshore structures.

Marios became a member of academic staff in the Department of Civil & Environmental Engineering at Imperial College London in 2012 and currently holds this post. He teaches a variety of modules (Mathematics, Coastal Engineering, Extreme Value distributions, Processing and Managing Field Data) and supervises several PhD students.

Chris Coffey

Chris holds a PhD in Fluid Dynamics from Imperial College London and an Honours degree in Mathematics with Theoretical Physics from University College London. He is a Chartered Mathematician and also holds an MBA from the Open University.

Chris has over ten years’ experience in fluid mechanics and technical safety, working in the academic, defence and industrial sectors. He works across industry using physical, mathematical and computational modelling to analyse ventilation, dispersion, gas and dust explosions.