Brunvoll - Experts & Thought Leaders

Brunvoll has signed a contract with VARD for the delivery of an extensive propulsion and manoeuvring system for Dong Fang Offshore’s new Offshore Subsea Construction Vessel (OSCV). The contract is for delivery for one vessel, with one additional vessel as an option. Brunvoll’s delivery for the vessel consists of two azimuth propulsion thrusters, two resiliently well-mounted tunnel thrusters, and a retractable azimuth thruster. The scope also includes Brunvoll’s Propulsion and Thruster Control system, BruCon PTC. Words from Dong Fang CEO “We have great confidence in Brunvoll. We expect excellent service, strong performance, and long-term reliability from their thrusters throughout the operational life of our new OSCV.” “At the same time, we hope this will be the first of many Brunvoll thrusters installed across our future fleet,” says Polin Chen, CEO of Dong Fang Offshore. The vessel is of VARD 3 39 design and will have the following main particulars; Length over all of 121 meters, beam of 23 meters, 1.200 m2 work deck, and the capacity to house a crew of 130 persons in 90 cabins. The vessel is scheduled to be delivered in the second quarter of 2027. Words from Brunvoll VP  "We are excited to continue our strong collaboration with VARD, contributing to the advanced capabilities of Dong Fang Offshore's new OSCV. We are grateful for the trust Dong Fang Offshore has placed in Brunvoll's solutions, and we look forward to supporting them throughout the vessel's lifetime.” “This project exemplifies Brunvoll’s vision of being ‘trusted world wide’, by delivering reliable and efficient propulsion and manoeuvring solutions tailored for demanding offshore operations," says Bernt Rune Riksfjord, VP Sales at Brunvoll.

Brunvoll has signed a contract with Rizhao Gangda Shipyard for the delivery of an extensive propulsion, manoeuvring, and dynamic positioning system for an Emergency Towing Vessel (ETV).  The vessel is owned by Smit Lamnalco, a subsidiary of Boskalis, and will operate for the Austral Maritime Safety Authority. Its mission is to protect the marine environment around the Great Barrier Reef and Torres Strait – some of the most precious marine areas in the world. Brunvoll twin-screw propulsion system Brunvoll consists of the twin-screw propulsion system, 4 tunnel thrusters, and advanced control system The delivery from Brunvoll consists of the twin-screw propulsion system, four tunnel thrusters, and a highly advanced control system. “We are proud and humble for been chosen by such a major player in the maritime industry. The control system for this vessel is one of the most advanced systems to date by Brunvoll." "We have been working with this project for quite a while, and it is outer most rewarding when it finally comes together. All disciplines in Brunvoll have been working closely together with the owner and designer to realise this project, and even though the schedule is tight we will deliver on time,” says Oddbjørn Følsvik, VP Sales at Brunvoll. DP system features The control system delivery is one of the most advanced from Brunvoll to date. It includes Brunvoll’s Propulsion and Thruster Control system (BruCon PTC), Brunvoll’s Dynamic Positioning system (BruCon DP2), and Brunvoll’s Joystick control (BruCon JS). The DP system features Target Tracking, which allows the vessel to follow objects, such as Remotely Operated Vehicles (ROVs). Twin screw propulsion solution The propellers will have a maximum power output of 3800 kW each, and a diameter of 3.5 metres The twin screw propulsion solution consists of a pair of controllable pitch propellers with reduction gearboxes and nozzles. The propellers will have a maximum power output of 3800 kW each, and a diameter of 3.5 metres. The gearboxes also feature Power Take-Out (PTO) and Power Take-In (PTI), which allows for a broad variety of operational modes. All the different modes are available both in normal operation and while the vessel is in DP2 operation as well. Operational modes of the system  The system will feature the following operational modes: PTO: Main engines and shaft generators running PTO on both sides, delivering both power for propulsion and electricity on board. PTI: Propulsion on both sides running by the electrical motors, powered either by auxiliary motors or batteries. In lower load conditions, this mode can be used to avoid starting up the larger main engine and instead run smaller engines on more optimal load conditions. Hybrid: One side runs PTO and the other runs PTI, i.e., one main engine powers both propellers. Adding further flexibility and optimal running of engines. Bollard pull: Both sides powered by main engines and PTI, for maximum bollard pull. This boost mode takes out the full power of the vessel to support special operations, like towing or anchor handling. Fire Fighting: FIFI pumps engaged with less power available for propulsion, to avoid overloading the main engine. The vessel was designed by Robert Allan Ltd. with the design annotation RASalvor 6500. The dimensions of the ETV are a length of 65 metres and a bollard pull capability of 120 tons.

Brunvoll expands its product range of tunnel thrusters with its largest thruster to date. This is a response based on trends seen in the cruise industry, where they build larger and larger vessels.  The first delivery of this new size is for three cruise vessels, where each vessel will feature four tunnel thrusters. The contract is with an undisclosed shipyard and shipowner. Powerful propulsion Brunvoll’s delivery for the vessels consists of a total 12 tunnel thrusters of the new FU135-series. These thrusters will have a power output of 4.000 kW each and have a controllable pitch propeller with a diameter of 3.5 meters.  The tunnel thrusters will also be delivered with tunnel extensions cut to the hulls shape for easy installation and integration at the shipyard. The new FU135-series offers a wide power range, with a power output up to 5.100 kW dependent on use.  This new size of tunnel thruster has been developed based on trends in market with slightly larger cruise vessel and that Brunvoll sees continuous growth in the shipbuilding market for these types of units in the years to come. The cruise passenger levels have reached pre-COVID levels and are forecasted to grow with 11 percent annually until 2030.