Brunvoll has signed a contract with VARD to deliver complete propulsion and manoeuvring systems for two Commissioning Service Operation Vessels. These vessels are for an undisclosed international owner.

Figure 1. The two new Commissioning Service Operation Vessels. Illustration: VARD.

Each vessel will be equipped with the following from aft to bow: two azimuth propulsion thrusters propulsion, a retractable azimuth thruster, a tunnel thruster, and a combined retractable azimuth and tunnel thruster. The scope of supply features also Brunvoll’s Propulsion and Thruster Control system, BruCon PTC.

The azimuth propulsion thrusters are equipped with Brunvoll’s latest energy-efficiency innovation, the DL1-nozzle, also known as the “Dragless”. While traditional nozzles experience an efficiency drop at transit speeds, the DL1 maintains favourable hydrodynamic characteristics across a broader operating range. More information about the nozzle and its features is available at www.brunvoll.no/news/the- dragless-nozzle.

The vessels are based on VARD’s 4 19 design, with the following main particulars: length of 87.5 meters, beam of 19.5 meters, and accommodation capacity for 120 persons, along with all equipment required for a CSOV.