Constellation Oil Services has secured Approval in Principle from the American Bureau of Shipping (ABS) for its Fuel Processor project, which is being implemented and tested aboard the drillship Laguna Star.
The technology is designed to improve energy efficiency and reduce emissions from diesel engines used on offshore units. Constellation announced the ABS AiP during ROG.e 2026.
Industry reports said the pilot project was contracted at the end of 2025 and is expected to continue through 2028. It is being developed with Petrobras using funding linked to Brazil’s National Agency of Petroleum, Natural Gas and Biofuels research, development and innovation clause.
Clean Energy Power Systems is also involved in the project, while PUC-Rio is serving as an independent third party responsible for validating the results, according to the same reports.
Alongside the AiP, Constellation and ABS signed a memorandum of understanding to cooperate on technologies aimed at improving operational efficiency and reducing emissions in offshore operations.
Constellation’s official announcement did not detail the individual technologies covered by the MoU. Drilling Contractor reported that the framework includes technical discussions on hybridisation using battery energy storage systems and closed-bus operations, as well as guidance and potential future certification work.
The Fuel Processor remains in the pilot phase aboard Laguna Star, with implementation and testing continuing following the ABS Approval in Principle.
