Who We Are

We are helping develop the economic and strategic benefits of a strong, sustainable, and technologically advanced maritime enterprise in Australia. 

Gibbs & Cox Australia is a naval and marine engineering firm focussing on naval architecture, shipbuilding, nuclear submarine engineering, maritime systems engineering, program management, and marine autonomous systems. Our team represents leading expertise from across Australia, US, UK, NZ and Canada.

Our clients include Department of Defence major naval projects, other Defence teams, Australian government civil operators, and corporate clients. GCA provides a range of specialty engineering and program management support to our clients with a focus on knowledge transfer that enables the upskilling of our clients’ workforce in support of the Australian maritime enterprise.

We benefit from the heritage and expertise of our parent company Gibbs & Cox, A Leidos Company. One of the world’s leading naval architecture and marine engineering firms, Gibbs & Cox has been servicing naval, government, commercial, and recreational marine markets worldwide since 1929. Gibbs & Cox is underpinned by global systems integration expertise, systems and scale by our parent company, Leidos. Gibbs & Cox Australia is headquartered in Canberra, ACT.

Our Mission & Values

At Gibbs & Cox Australia, our mission is to provide world-leading naval and marine engineering expertise for Australia’s shipbuilding, design, and maritime enterprise.

Our values describe what we stand for and our approach to our work, setting the standard for how we establish trust, and collaborate with our clients and partners to deliver successful outcomes. Our century-long heritage of excellence is the evidence of our commitment to our values.

The core of our business

Acting with honesty and honour

Professional, knowledgeable and experienced

Accurate, capable and effective

Engagement and cooperation with stakeholders

Dedicated to our customers' success

Our History

Gibbs Brothers was founded in 1922 in New York as by naval architect William F. Gibbs and his brother Frederic H. Gibbs. In 1929 they were joined by Daniel H. Cox to form Gibbs & Cox, Inc.

During World War II, Gibbs & Cox was a leader in the shaping of the U.S. maritime forces. Over 5,400 ships were built to Gibbs & Cox, Inc designs during World War II. These included destroyers, destroyer escorts, light cruisers, landing ships, and amphibious assault vessels, minesweepers, icebreakers, tanks, and tenders. Gibbs & Cox also designed the famous, standardised cargo-carrying Liberty ships of World War II and was instrumental in the implementation of modular construction, centralised material, and equipment procurement, and design-for-production features that are the foundation of modern cost-effective shipbuilding today.

In Australia, Gibbs & Cox has been supporting the RAN for over 60 years. We have been involved in every surface combatant program of the RAN since designing the RAN Brisbane class / DDGs USN Charles F. Adams in the 1960s. In 2017, Gibbs & Cox establishing Gibbs & Cox Australia (GCA), a wholly owned subsidiary of Gibbs & Cox as a permanent Australian business. GCA now operates four lines of business supporting a range of naval, government civil, commercial, and autonomy projects.

We’re proud of our heritage, but we are focused on the next generation of naval technologies, supporting the development of the Australian maritime enterprise with new capabilities and modern approaches to system development, and program delivery.

More History

Our Team

  • Ray Sheldon

    President, Gibbs & Cox, Inc., and Chairman, Gibbs & Cox Australia

    Mr. Sheldon became the President of Gibbs & Cox in March 2022. He joined Gibbs & Cox as the Chief Operating Officer in 2016 following a 40 year career in the maritime industry with experience in professional services, systems integration and product delivery including; manufacturing, training systems, ship design, acquisition and lifecycle support. He holds a Bachelor’s of Science in Naval Architecture and Marine Engineering from the Webb Institute of Naval Architecture.

  • Levi Catton, CPEng, MIEAust

    Managing Director

    Mr. Catton was installed as the Managing Director of Gibbs & Cox Australia in January 2020. Mr. Catton holds broad naval program experience as a professional Naval Architect, Engineering Manager and Program Director covering all phases of the naval ship capability lifecycle. He joined Gibbs & Cox Australia as a Program Director supporting the SEA5000 program in December 2018. Previous to joining Gibbs & Cox Australia, he has held roles in engineering and acquisition management for Irving Shipbuilding on the Canadian Surface Combatant program, production engineering management for ASC Shipbuilding on the Hobart Class program, and prior roles with Thales Australia, DMO, and Navy Systems. Mr. Catton holds a Bachelor degree in Naval Architecture with Honours 1st Class from the Australian Maritime College, a Certificate in Complex Project Procurement Leadership from the University of Ottawa, and is currently studying an MBA.

  • Sonia Sinclair

    Director Corporate Services

    Sonia joined Gibbs & Cox in 2019 following a government and corporate career that spans over 30 years. Sonia has lived, worked and studied in the UK, Canada and Australia, gaining a wealth of experience in defence, government and private sectors. Sonia studied Business Management (Finance) at Brighton University, UK, Accounting at Victoria, BC Canada, and she is currently working towards the completion of an MBA. Sonia’s previous roles as CFO and in corporate business management have provided extensive experience and knowledge in management of corporate services. Sonia has strong business acumen with significant experience in corporate management, accounting, audit & risk management, contracts and Human Resources. Sonia is a strategic member of the management team, focusing on Gibbs & Cox business and growth strategy, continuous improvement, and advancements to processes and compliance. Sonia plays a key role in managing our support to our clients.

  • Peter Blackwood, EUR ENG, CENG, MIMAREST, FRINA

    Director Technical Advisory

    Peter joined Gibbs & Cox Australia as a Principal Naval Architect in February 2020. He has wide ranging experience in the maritime industry, in defence and commercial shipping. Peter has developed deep technical specialism in ship stability, structures and survivability. Peter’s expertise was founded through working on a variety of projects in a commercial consultancy firm gathering and creating technical evidence for large ship design and upgrade programs, expert witnessing, and litigation. Latterly in his career, Peter developed defence experience through managing a Survivability team, and has had senior management responsibility in the defence industry across survivability, air and maritime structural assessment and management, and artificial ageing and evaluation of stores. Peter is a chartered engineering with the IMarEST, and gained his Master’s Degree (with merit) in Naval Architecture from the University of Strathclyde in Glasgow, Scotland.

  • Matthew Stevens, BEng (Mech), BEng (Nav Arch)

    Director Programs, Sustainment & Shipbuilding Operations

    Matt joined Gibbs & Cox Australia in early 2022 as a Principal Shipbuilding Advisor, and now serves as Director Programs, Sustainment & Shipbuilding Operations. Matt is a nationally-respected expert in ship production and shipyard operations. He holds broad operational and delivery experience across a number of major shipbuilding projects, and maintains active working relationships across the Australian shipbuilding industry. Matt’s energy and expertise brings an advanced level of capability and insight to any project team’s management of production, project and shipyard operations issues. Matt graduated from University of Newcastle with a Bachelor Degree with Mechanical Engineering and UNSW with a Bachelor Engineering in Naval Architecture.

  • Allen Stotz, MBA, BSc, PMP, CD

    Director Maritime Autonomy

    Allen joined Gibbs & Cox Australia in November 2022. Allen has broad experience as a Project Manager, Engineering Manager, Systems Analyst/Programmer and Naval Warfare Officer. Allen holds more than 40 years of experience with naval combat and C4I systems operation, research, development and in-service support for the Royal Canadian Navy. Allen’s career history includes five years in industry as PM leading the refurbishment of Canada’s mine warfare and route survey systems, three years as C4I Systems IPT lead on Canada’s Joint Support Ship Project, and the past eight years as Senior Combat Systems Engineering Manager and Deputy Project Director at Irving Shipbuilding with the Canadian Surface Combatant project. In this role Allen received a commendation from the Commander, Royal Canadian Navy for his outstanding services to the RCN in moving the CSC project from definition through to contract award. Allen has been a Project Management Professional since 2004 and recently completed his MBA at Saint Mary’s University in Halifax, Canada.

  • Andrew Osborne, IENG, MSOE, MBES

    Senior Integrated Logistic Support Engineer

    Andrew joined Gibbs & Cox Australia as an Integrated Logistic Support Engineer in December 2019. Andrew has developed a deep level of understanding through his 11 years working in the Integrated Logistic Support environment during both the build phase and in-service support of UK RN warships. He gained experience in dataset management and integration of the Logistic Support Analysis Record (LSAR), Reliability Centred Maintenance (RCM), Initial Provisioning (IP) and the associated technical manuals in S1000D format. His work included the management of design change and obsolescence into datasets, as well as the co-ordination and delivery of ships maintenance and their associated technical documentation contained within the Interactive Electronic Technical Publications (IETP). Andrew gained an HNC in Mechanical Engineering from Oxford Brookes University whilst serving in the Royal Air Force in 2001.


    Principal Mechanical Engineer

    Simon joined Gibbs & Cox Australia as a Principal Mechanical Engineer in January 2021. Prior to this, he held senior roles as a General Manager and Non-Executive Director in New Zealand and the UK. He is a Marine Engineer by background and served over 20 years in the Royal Navy and the Royal New Zealand Navy. His naval career included roles as the Marine Engineering Officer of a Type 23 Frigate and supporting the Type 45 Destroyer acquisition project. In the RNZN, his credits include Project Protector, ANZAC Frigate upgrades and acquisition work on the RNZN AOR. Subsequent roles after leaving the RNZN included Project Management, General Management, Emergency Management and Non-Executive Director positions. In 2019, he joined Strategic Sourcing Consultancy working for the RNZN on the Future Maritime Support Construct and the ANZAC Frigate Systems Upgrade programmes. Simon holds an MBA from Victoria University of Wellington and is a graduate of the NZDF Joint Staff Course. He is a Chartered Professional Engineer and a Fellow of Engineering New Zealand and the UK-based Institution of Mechanical Engineers.

  • Tim Gay, BEng (Aero), MAIPM CPPD

    Scheduling Manager

    Tim joined Gibbs and Cox (Australia) as a Schedule Manager in June 2021, bringing 30 years’ experience in complex projects within Defence and industry.

    His early career with the RAAF and RNZAF afforded him the opportunity to experience the complexities of sustainment and mid-life capability upgrades of a variety of Defence platforms, before joining Defence industry in 2001.  Since that time, Tim has been fortunate to work on a number of major programs across Land, Air and Maritime domains, spanning the full capability lifecycle in each, in both hands-on and senior management roles.  Tim specialises in planning, scheduling, cost estimation and earned value management in high-value, low-volume acquisition environments.

    Tim holds Bachelor of Aerospace Engineering from the RMIT University in Melbourne, Australia, and was accredited as a Certified Practicing Project Director in 2017.

  • Andrew Smith, MEng, FIEAust

    Director Ship Systems Integration

    Andrew joined Gibbs and Cox in July 2020. Andrew has 35 years’ experience working for the US Department of Defense working in Submarines in all phases of the life cycle. He acquired submarine Combat and Weapons Systems design, test, build, integration, production, and sustainment experience while working in Engineering Stations, Navy laboratories, and Systems Commands and serving as an engineer, technical design agent, in service engineering agent, chief engineer, program manager, and submarine portfolio manager. He has an additional five years’ submarine experience seconded to the Australia Department of Defence as an engineering director, Principal Engineer, and executive director. He holds a BS in Electrical Engineering from Virginia Military Institute and a ME in Systems Engineering from Old Dominion University and is a Fellow of the Institute of Engineers Australia.

  • Jeremy Slay, MIEAust, CPEng, NER, APEC Engineer, Int PE(Aus)

    Principal Advisor Infrastructure

    Jeremy joined Gibbs & Cox Australia in December 2021 as a Senior Infrastructure Advisor. He has over 23 years’ experience working in the Australian defence and international oil and gas industries. He has extensive ship building and infrastructure experience working in the main shipyards in South Korea, and most recently worked as the Infrastructure Manager on the development of the Attack Class Submarine Construction Yard in Adelaide. In this role, he was responsible for internal and external stakeholder engagement, development of the infrastructure functional requirements for the ship yard to support the build strategy, execution of the infrastructure design assurance and developed a construction assurance program.

  • Cameron Whitten, BEng (Hons), CEng, MRINA, RPEQ

    Senior Naval Architect

    Cameron joined Gibbs & Cox Australia as a Senior Naval Architect in April 2022. He is an experienced Naval Architect in both the defence and commercial sectors leading the delivery on a number of commercial design projects. Cameron’s experience in the commercial sector includes working on a range of ship designs from a 6m aluminium tourist boat, a 28m vessel refit, 35-60m ROPAX catamaran ferries and an 87m transhipment cargo vessel. His defence experience includes requirements development on the SEA5000 project and structural assessment of the Pacific Patrol Boats. He holds a BEng (Honours) in Naval Architecture from the Australian Maritime College and was awarded his Chartered Engineering Status by RINA in 2014.

  • Claire Johnson, MRINA

    Senior Naval Architect

    Claire joined Gibbs & Cox Australia as a Senior Naval Architect in August 2021. Through Claire’s previous experience with the Australian Department of Defence she has a strong understanding of the Defence maritime sector. She has held roles as an engineering specialist and engineering manager, working across both sustainment and procurement, where she has undertaken technical analysis, witnessed engineering tests, provided technical advice and participated in international working groups. She is an expert in ship stability and is also knowledgeable in ship hydrodynamics and structures. Claire also has a strong background in Defence technical governance having lead and managed technical and policy teams. Recently, she has been utilising her skills in naval ship procurement and design development. Claire gained her Bachelor of Engineering in Naval Architecture with First Class Honours from the University of New South Wales.

  • Peter Thurling, BEng (Hons), MEngSci, MRINA

    Senior Project Manager

    Peter has over 20 years’ experience as a Systems Engineer, Engineering Manager and Project Manager during both the build and in-service support phase of RAN warships, and has worked on every current RAN fleet unit at some stage during his career. Peter is an alumni employee of Gibbs & Cox Australia, having previously served during the Air Warfare Destroyer concept development phase during 2006/2007, and it is fantastic to have Peter back on the G&C team again. Peter holds a Masters of Engineering Science (Project Management) from the University of New South Wales and a Bachelor of Engineering with Honours from the Australian National University.

  • Kyle Halvordson

    Senior Structural Engineer

    Kyle joined Gibbs & Cox as a structural engineer in 2011 after several years in the building industry. At Gibbs & Cox, he has taken on roles as the lead structural engineer for the integration of Aegis into a modular building design, supported the Virginia Class submarine structures technical warrant holder, and most recently, as subject matter expert in shock and structures for the Future Submarine Program. Kyle’s niche is finite element analysis and the response of structures to dynamic loadings; however, over his career, Kyle has had success in developing a wide range of products from radar installation procedures, tolerance analysis, shock test procedures, design method specifications, and engineering assurance plans. Kyle is a Professional Engineer (PE) with a bachelors and masters degree in civil engineering from the University of Connecticut and Virginia Tech. He is the author of several papers on the structural analysis of geogrid reinforcement.

  • Sam Davey, MIEAust, CPEng, RPEQ

    Senior Naval Architect

    Sam joined Gibbs & Cox Australia as a Senior Naval Architect in 2022. Sam has 10 years of professional experience across both the commercial and defence maritime industries. He spent the first three years of his career in Western Australia working in submarine maintenance, then followed that up with three years at small naval architecture design firm in remote coastal WA, where he designed everything from small tenders and workboats up to 50m offshore oil & gas crew boats. Up until recently Sam has been working on various RAN ships including the MHCs, ACPBs, DDGs, LHDs & Choules, as well as assisting with the docking of vessels in Newcastle and Garden Island. Sam is now helping define Australia’s approach to naval supply chain sovereignty, as well as applying his seemingly limitless talents to a portfolio of other small design and advisory projects.

  • Michael Reilly, MIEAust, CPEng, NER

    Senior Electrical Engineer

    Michael started with Gibbs & Cox Australia in early March as a Senior Electrical Engineer. Michael has taken on the challenge of bringing the electrical systems on the EMAPS prototype from preliminary design into production. Previous to working with Gibbs & Cox Australia, Michael has worked in both the commercial and Defence industries designing power and communication reticulation to service new development projects and followed that up with a year working a FIFO roster on a large windfarm in rural Victoria. For the past three years, up until recently, Michael has been working on various RAN platforms including the MHCs and ACPBs, where he led the engineering changes for electrical systems.


  • James Phillips, BEng (Hons), CEng, MRINA

    Senior Naval Architect

    James started with Gibbs & Cox Australia in September and is working as a Project Engineer. James has been working as a Naval Architect for 8 years. He started his career in the commercial sector, working for specialist naval architecture firms in Sydney in the design of aluminium high-speed ferries, workboats and fibreglass white boats ranging in size from 5m to 100m plus.

    From 2018 onwards, James has been working in the Defence space on engineering design and platform integration projects for RAN ships including the MHCs, DDGs, LHDs & HMAS Choules. He was also the Production Engineer for the ACPB 5-year renewal maintenance periods.

  • Vernon Hutton

    Strategic Program Advisor

    Vernon joined Gibbs & Cox, Inc in July 2020 as Principal Program Advisor. From July 2017 through June 2021, he was seconded to the Australian Future Submarine Program as Director Combat System and as Director Weapons and Deployable Systems. Vernon continues as a Strategic Program Advisor to the Department of Defence on various submarine and defence matters. Vernon served over 28 years as a US Naval Officer, proficient in submarine operations and acquisition. He is a certified US Navy Nuclear Propulsion Engineer and served as a Chief Engineer. As Commanding Officer, Vernon led a 130-person submarine crew to excellent performance critical to national objectives earning a Navy Unit Commendation for operations conducted in the Mediterranean. Later Vernon served as Major Program Manager for undersea weapons and for a joint Australian-US torpedo program. Following retirement from the USN, Vernon has worked for more than 16 years in defence industry. Vernon has a BS in Engineering from Vanderbilt University, an MBA (Finance and Accounting) from Marymount University, and served a fellowship at American Enterprise Institute studying congressional budget process, economics, and the defence industrial base.

Our Partners

In addition to our immediate team, we work closely with Gibbs & Cox’s very substantial US-based naval, and marine engineering expertise. We also work closely with a number of local and international specialist partners on some of our projects, where appropriate to ensure we apply the right expertise to address project and client needs. These partners are an important and valued part of our technical network and contribute to our overall capability.

  • Alpha 1 Ribs
  • Argos Controls
  • Broadreach Marine
  • IMC Australia
  • Interslice
  • Kearney Australia
  • Leidos Australia
  • Marenav
  • Platypus
  • Profundus UK
  • Seahouse Designs
  • Symred
  • Synoptix UK