Independent and Global Design and engineering consultancy

OUR ENGINEERING SUPPORT.
YOUR PROJECT SUCCESS.

Since 2006, Longitude Engineering has delivered specialist design and engineering services in the marine, energy and defence markets. Our independence, expertise and experience make us the natural choice for a wide range of design solutions across Asia Pacific, Europe and North America.

We take a holistic view of marine engineering and design, from the overall concept through to the smallest detail: rather than simply focusing on a craft or platform, we’re dedicated to helping your marine design 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 Longitude unique.

Longitude also combines the specialised expertise of vessel design house OSD-IMT, acquired in 2021, and Brazil-based naval architecture and offshore engineering expertise of Proper Marine, acquired in 2025.

Contact Longitude today to discuss your project.

Green

Trusted advisor driving the energy transition in shipping and offshore energy sectors

Experts

World-class expertise in engineering and design disciplines

Independent

Independence to innovate and expand where clients need us

Global

Offices located in 12 countries in the Americas, Europe and Asia Pacific, with a strategy to grow where we are needed

Innovative

Strong track record of developing technologies for sustainable energy and shipping practices

Responsive

Highly responsive team with on-the-ground expertise where needed

Longitude’s offices are located across our core markets in the UK, France, Italy, Singapore, Malaysia, Australia, Philippines, Taiwan, USA, Canada, Mexico and Brazil, via our local branch, Proper Marine.

We also deliver design and engineering services across our parent company, ABL Group's geographical footprint of 43 countries, providing independent design, engineering and analysis services to our sister companies: ABL, AGR and OWC.

Our Offices About Us

Case Studies View All

IMT-Isca Platform Supply Vessel (PSV) Series: G-Flex

The IMT-Isca design series represents the next generation of platform supply vessels (PSVs), evolved from the successful IMT-984 or G-Class series, with a focus on efficiency and low-fuel consumption,…

Longitude Completes Engineering Base Scope on FPSO Conversion

Longitude Engineering has completed its engineering base scope for Yinson’s vessel conversion of an FPSO destined for Brazil, including naval architecture, structural engineering and hydrodynamic analysis. “The FPSO…