23m CTV is first reference for Namjet’s latest shallow water jets

NAMJet waterjets are the only jets in the market that provide exceptional low to static speed thrust and are suitable to operate in very shallow, sandy, and abrasive waters without loss of efficiency. The TJ611HH is capable of up to 12 tonnes static bollard push in as shallow as 1.5 metres.

The 23M SC Sapphire is an all-aluminum monohull vessel with the structure based on the successful SC Amethyst’s sister vessel with Slide Hull designed by Vripack. The SC Sapphire is powered by triple Volvo DH16MH 651hp @ 1800rpm engines, through Twin Disc MGX5146SC, 2.5:1 gearboxes to NAMJet High Thrust TJ611HH Waterjets. The vessel was created to provide comfortable and safe crew transfer at speeds of 25kts when servicing wind farms. This allows for operations in seas with a wave height above two metres.

NAMJet is an advanced marine propulsion systems manufacturer headquartered in Denver, Colorado, USA with a sales and engineering office in Southampton, UK. NAMJet has over 30 years of experience in manufacturing highly efficient waterjet propulsion systems for a wide variety of commercial, military, and workboat applications. The unrivalled bollard pull of NAMJet waterjets allow the SC Sapphire to keep firmly secured to the wind tower and to provide an improved operating window when connected to offshore wind towers in various sea state conditions.

Sima Charters runs a 24/7 local CTV transfer service from the Port of Rotterdam area to the anchorages off the Dutch and Belgian coast. Sima also provides international CTV transfer services and vessels for offshore projects such as wind farms, surveys, dredging and salvage operations.

By Jake Frith