More Vestdavit boat-handling expertise for Ulstein

Nexans is already using Vestdavit’s Mission Bay system to deploy workboats for cable-laying operations worldwide after the first full-scale installation on flagship Nexans Aurora that was delivered by Ulstein in 2021.

“This represents a further application of dual-winch technology, which is already well proven from operations with the US Navy over the past two decades and is highly qualified for the task of boat handling in heavy sea conditions,” said Rolf Andreas Wigand, managing director, Vestdavit.

“At the same time, the latest order for the Mission Bay system is a strong endorsement of the concept, which has been demonstrated in actual operations for Nexans.”

Proven system

Vestdavit’s TDB-5000 boat-handling system facilitates operational flexibility in deploying a range of different craft, as well as efficient launch-and-recovery operations in variable sea states.

It comprises an inboard hangar for safe storage of eight craft, which has been supplied by Maritime Partner, with an automated track-and-trolley system that can launch multiple workboats from either side of the vessel.

Nexans’ newest 150-metre-long newbuild cable-layer vessel will carry out cable-laying to connect countries and regions, renewable schemes and offshore installations with subsea high-voltage systems delivered by Nexans to support electrification projects worldwide.

It will have 10,000 tonnes of cable load capacity and advanced instruments for transport and installation of various types of subsea cables.

The vessel will be equipped with DP3 for exceptional manoeuvrability and station-keeping capabilities as it will be required to perform effectively even in challenging weather conditions and high sea states.

Vestdavit has developed a highly advanced dual-winch davit, named HN-9003, which has been specially designed for the newbuild project.

The company will deliver two of the tailor-made, high-specification davits able to safely launch and recover a Fassmer combined fast rescue craft and lifeboat, with robust boat-handling capability in high sea states to allow a wide operational window for the newbuild.

As well as dual winches, the HN-9003 has separate constant tension and a PLC (Programmable Logic Controller) system that can be operated from an intuitive wireless remote control unit.

Vestdavit has also been selected by Ulstein to supply a similar system for the latest newbuild of the ST-297 CLV design by Skipsteknisk, which is based on the design of the Nexans Aurora.