GW Marine Consultants are a dynamic group of professionals whose primary goal is to assist clients to Grow their Business Safely.

GW Marine is a specialist provider of QC, HSE and marine services to the oil & gas exploration, construction & operational sectors. Additionally we offer marine auditing, management system auditing, project management, HSE documents and business support tailored to your needs.

GW Marine Consultants promote a team oriented

approach where communication, cooperation and partnerships are key elements to successful outcomes.

Headquartered in Perth, with a subsidiary office in Houston, we have operated in all the world’s leading oil & gas provinces.

If you want to align your business with a company that operates with honesty, integrity, transparency and respect for people and the environment GW Marine Consultants are the only choice.

Our Commitment

GW Marine Consultants are committed to providing our clients with the highest level of professional service possible, which will meet or exceed their expectations.

Utilizing Regulatory, International and Industry Standards to consistently achieve and improve “Best Practices”, we will work together with our Clients to ensure all their objectives are achieved.

Health, Safety and Environment responsibilities are integral in all our business activities and shall

complement our clients HSE aspirations.

We will continue to develop our company in a responsible and controlled manner which reflects our commitment to providing a high quality product, produced by a strong, experienced and professionally dedicated team.

We will strive to build partnerships with both our clients and consultants based on mutual trust and honesty and in doing so develop sustainable value for all concerned.


Commencing operations in 2001, GW Marine Consultants was the product of a long time professional friendship between Larry Williams and Chris Grubba. The Directors met whilst they were both working for GSI back in 1977. Since then they have both mastered their individual chosen career paths which lead them to take on the new challenge of starting a consulting business, both bringing with them a combined total of over 75 years in the oil and gas industry.

In July 2014 the company was restructured with Chris retiring as a Director and from Operational Management but still remaining active within the company as a Marine Auditing Consultant.

GW Marine Consultants started out with just the two Directors consulting for a handful of clients mainly in the areas of HSE Management Systems and vessel auditing, the company has now grown to have over 200 qualified professional consultants on the database and now offers a broad range of services to more than 100 clients. GW Marine Consultants have grown from offering a limited range of services for upstream exploration projects to now supplying a wide variety of consultants in all aspects of the oil and gas exploration offshore and onshore industry.

Below are some of the highlights from the GW Marine Consultants project history.

PGS – Ramform Titan and Ramform Atlas – New Build Inspections

Petroleum Geo-Services (PGS) recently launched their next generation seismic survey vessels the Ramform Titan and Ramform Atlas. GW Marine Consultants was extremely privileged to be contracted to undertake the new build pre-inspections for both vessels. Our long time, highly qualified Master Mariner and lead auditor Captain Richard Court travelled on both vessels maiden voyages to carry out the inspections.

Video Gallery - Our Services

Key Staff

Larry Williams

Managing Director

Larry has extensive experience in the offshore oil and gas industry with a primary focus on the upstream exploration. His impressive career has seen him progress from using his trade skills as a mechanical fitter on-board a seismic exploration vessel working as a gun mechanic in 1976 through to the on-board Party Manager position and then moving ashore and holding various operations management positions before achieving the position of Global Marine HSE Manager in 1998 for a major exploration company based in the United Kingdom.

Larry successfully transferred his many years of field and corporate experience into developing GW Marine Consultants into an industry leader in the provision of HSE & quality resources to the oil & gas industry.

GW Marine Consultants was founded in 2001 by Larry Williams & Chris Grubba and has consistently delivered outstanding results to its clients in a challenging environment & commercially competitive market.

Samantha Robinson


Samantha is a resourceful and results-driven Manager with an eye for detail. Joining GW Marine in 2008 Samantha brought her experience from an IT development company.

Analytical with strong systems skills, Samantha specialises in structuring, standardising, and streamlining processes to provide more accurate and productive systems that enhance and facilitate better business decisions.

Samantha is the “engine” that keeps the office running in what would otherwise be chaos. Her professional and interpersonal skills enhance the GW Marine brand with vitality and energy.

Lynda Williams

Accounts Manager

The exacting task of balancing the books is Lynda’s sole responsibility. GW Marine prides its self on the level of financial management and discipline used to ensure high standards of commercial and legislative compliance are reached.

In a challenging market where expenditure must be tightly controlled and value for money maximised, Lynda can analyse and deliver the data required by the directors to make sound investment decisions.

Highly qualified with 35 years’ experience in the area of financial management Lynda adopts a “no room for error” principle to her duties.

In addition Lynda makes the best brewed coffee in Perth. You are all encouraged to visit our offices for a cup of pure delight.