Brunvoll has entered a contract with Spanish shipyard Astilleros GONDAN to deliver an advanced azimuth thruster package for Østensjø Rederi’s upcoming Ocean Energy Support Vessel (OESV), designed by Salt Ship Design. The vessel, expected for delivery in the second half of 2027, will play a crucial role in offshore energy operations, offering capabilities like inspection, maintenance, repair, and cable laying. Brunvoll’s six-thruster system, including both propulsion and retractable azimuth thrusters, enhances dynamic positioning (DP) and operational efficiency, setting a new standard for offshore support vessels.
Advanced Thruster Configuration for Optimal DP Capability
The OESV will be outfitted with three azimuth propulsion thrusters at the stern, each delivering 1900 kW of power, and three retractable azimuth thrusters of 1600 kW in the bow. Traditionally, vessels of this type feature one retractable azimuth thruster and two tunnel thrusters. This unique three-thruster arrangement at the bow not only improves DP accuracy but also provides system redundancy and prevents ventilation issues that typically affect tunnel thrusters in rough seas.
Compact and Efficient Design
Brunvoll’s thrusters are engineered for optimal space utilization, featuring a lower building height that enhances onboard space efficiency. The compact design is achieved through Brunvoll’s latest engineering advancements, providing a practical solution that does not compromise on power or functionality. This efficient design allows the vessel to maximize its operational capabilities without sacrificing valuable onboard space.
BruCon Control and Condition Monitoring System
Brunvoll’s delivery package also includes the BruCon Propulsion and Thruster Control (PTC) system, which enhances control during complex offshore operations. Additionally, the BruCon Condition Monitoring System (CMS) is integrated for real-time data and decision support, aiding in predictive maintenance and ensuring energy-efficient operation. These systems are critical for optimizing vessel performance, minimizing maintenance costs, and ensuring long-term reliability.
Versatile Offshore Energy Support Capabilities
Designed to meet a wide range of offshore energy needs, the OESV can handle Inspection, Maintenance, and Repair (IMR), walk-to-work/flotel services, construction support, and cable laying. This versatility enables Østensjø to serve diverse sectors within the ocean energy industry, ensuring efficiency and adaptability across multiple operational requirements. The 120-meter vessel, with a 23-meter beam and accommodation for up to 180 crew members, is purpose-built to handle the demands of complex offshore projects.
Collaboration and Expertise Behind the Project
The successful collaboration between Østensjø, Brunvoll, Salt Ship Design, and Astilleros GONDAN highlights the expertise and innovation driving this project. According to Østensjø’s Chief Project Officer, Egil Arne Skare, Brunvoll’s proven quality and reliability made them an ideal partner for this vessel. Brunvoll’s Vice President of Sales, Bernt Rune Riksfjord, expressed pride in contributing to another Østensjø flagship, acknowledging the trust placed in them by all partners involved.
With the development of this OESV, Brunvoll and its partners are enhancing offshore vessel capabilities, and prioritizing DP precision, operational flexibility, and crew welfare—marking a significant advancement in support vessel technology.
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Source: BRUNVOLL
