Saab Seaeye Cougar XT underwater robotic vehicle will be deployed aboard ‘Edda Fonn’. Credit: Saab Seaeye Ltd.

Østensjø Rederi has selected a Saab Seaeye Cougar XT underwater robotic vehicle for deployment aboard the multi-purpose support vessel ‘Edda Fonn’, to be used by the Royal New Zealand Navy.

The Norwegian company noted that it opted for the Cougar based on ‘very good feedback’ from end users around the world, as well as the overall specification.

According to Østensjø Rederi ROV and diving consultant Arvid Bertelsen, the Cougar XT has the ‘best’ power, thrust, and payload in its class, as well as the widest range of quick-change tool skids.

Furthermore, the Cougar complies with NORSOK 102 3ed 2016 Class II B for an observation vehicle possessing light intervention, survey and construction capabilities.

In August last year, Østensjø Rederi signed a contract with the New Zealand Ministry of Defence to deliver the ‘Edda Fonn’ with an integrated remotely operated underwater vehicle (ROV) and dive system amongst its upgrades.

Østensjø Rederi has expanded and extended the technical specification for the complete system including the Cougar, the control room, and the launch and recovery system (LARS) to meet the Navy’s operational needs.

“The 2,000m-rated Cougar XT comprises six thrusters, each interfaced with a fast-acting control system and solid-state gyro for greater azimuth stability and control.”

While choosing the Cougar, the company attached importance to the ability of safely launching it in sea states specified by the Royal New Zealand Navy.

The evaluation of the system involved a special focus on the LARS and its position inside the vessel.

Østensjø Rederi determined that the Cougar will have a modified dipping and extending LARS with snubber, heave compensation and electric winch motors.

The complete system will also involve a standard Cougar XT with minor modification to include three cameras and sonar system, as well as its tether management system and three individual tool skids with manipulators, cutters, and water jetting system.

In addition, the design will feature a control room integrated into the vessel.

The 2,000m-rated Cougar XT comprises six thrusters, each interfaced with a fast-acting control system and solid-state gyro for greater azimuth stability and control, noted Østensjø Rederi.