Welcome to ABL Group
Longitude is the design and engineering arm of ABL Group - a global and independent consultancy delivering marine, energy, engineering and software solutions to drive safety and sustainability in renewables, maritime and oil & gas sectors. ABL Group operates across 43 countries worldwide.
Proper Marine
Longitude's division in Brazil - specialists in naval architecture and offshore engineering.
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ABL
The energy and marine consultants, delivering technical services to support offshore energy and maritime sectors at construction, operations, decommissioning and in marine casualty scenarios.
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AGR
Engineering consultancy, skills resourcing, survey and software provider, specialising in wells, subsurface, and marine operations.
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OWC
The renewable energy consultants - providing technical advisory, engineering and consulting for the commercial-scale development of renewable energy onshore and offshore.
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About Us
Since 2006, Longitude Engineering has delivered specialist design and engineering services in the marine, offshore renewables, oil & gas, defence, and offshore infrastructure markets. Our independence, expertise and experience make us a natural choice for a wide range of design solutions across Asia Pacific, Europe and North America.
Part of the global consultancy ABL Group - Longitude also includes the specialised expertise of vessel design house OSD-IMT, acquired in 2021, and Brazil-based naval architecture and offshore engineering specialists, Proper Marine, acquired in 2025.
About Longitude
Our Business
Longitude Engineering is dedicated to providing marine design and analysis services to the marine, offshore renewables and oil & gas, defence and small craft market sectors. Our aim is to provide field operators, installation contractors, vessel owners and others involved in the industry with all the maritime engineering assistance they require to ensure their projects are successful.
Our People
We are staffed by naval architects, structural engineers, designers, hydrodynamicists, geotechnical specialists, metocean and coastal engineers, mechanical engineers and marine engineers, all with extensive and broad experience of the offshore renewables and oil & gas, marine, defence and small craft industries gained whilst working in various roles across the maritime industry.
Our Guiding Principles
We consider our most important assets to be our people, our independence and our reputation.
We take a holistic view of design from the overall concept through to the smallest detail – rather than simply focusing on a craft or platform, we are dedicated to helping your marine project succeed. This client-focused perspective, combined with our agile responsiveness and ability to adapt the way we work to suit you, is what makes us unique.
