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Wednesday, April 10, 2019 

Hydramec Offshore has recently supplied and commissioned a fully active heave compensated (AHC) Launch and Recovery System (LARS) as part of a diving support ship conversion for the New Zealand Navy.

The supply brief for the LARS system was very specific; the winch system had to be electric driven and have AHC capability for operations in up to sea state 6. The A-frame needed to be designed so that it would dip 1.2m below the deck level of the launch hanger to reduce the air gap between the launch point and splashzone. It was also specified that the A-frame must have an outreach of 5m from the vessel’s side. The LARS needed to be designed, fully Lloyd's approved and delivered in 16 weeks from the signing of the contracts.

MD Danny Church said: “Hydramec prides itself on its ability to deliver bespoke projects on time and on budget. The team at Hydramec have once again proved that any challenge presented to them is achieved. From the project team right through to the shop floor everybody pulls in the same direction to make sure that the customer’s needs and deadlines are met."

Scantrol is Hydramec’s chosen supplier of AHC control systems. Rolf Hjelmeland Business Development Manager for Scantrol said: “ We are proud to once again deliver Scantrol AHC to a Hydramec LARS. From our experience we know that the client can operate more cost-efficiently when integrating this functionality by increasing the weather window, reducing the damage of equipment and the burden of the ROV crew. I am glad that Hydramec has built their first electric AHC winch with excellent performance, and I look forward to many more projects like this.”

Hydramec contracted Brammer of Bergen, Norway, to supply the electric drive system and inverter controls. Scantrol and Brammer worked closely together with Hydramec’s project team to make the integration of the control system and the drive system into the LARS run smoothly and without delay.

The LARS system includes a telescoping A-Frame, multi-function snubber, bunded deck and separate hpu, all controlled by a full wireless radio remote control fully integrated with the AHC.

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