The design and engineering branch of global consultancy ABL Group, delivering services in marine and vessel design, offshore energy, renewable energy and marine operations.

Combining the expertise of vessel design house OSD-IMT, acquired in 2021, Longitude is a trusted partner in vessel design across energy and oceans, from newbuild design to conversions, to alternative fuel engineering.

Longitude has been contributing to renewable energy development since the industry's early days, supporting with asset design from concept to FEED, across fixed and floating offshore wind, power cable systems and substations, wave and tidal energy platforms.

Longitude supports a wide array of offshore oil & gas projects, providing specialist design and engineering services from concept to execution and construction, including through life support for all types of asset.

Longitude delivers expert design, oversight and project management services to the defence sector across the world.

Longitude has significant experience in small craft design, naval architecture, structural engineering, and comprehensive technical support services.

Longitude has provided engineering for the design, fabrication, and shipping of modular equipment for numerous LNG plants, on-shore refineries and port facilities as well as consulting services for coastal engineering

Longitude's branch in Brazil, delivering vessel design, conversion and repair, engineering consulting and analysis, asset integrity management and life extension, 3D scanning and marine operations engineering.