Offshore Solutions

Crew Transfer Vessels (CTVs)

FRS Windcat Offshore Logistics (FWOL) offers crew transfer vessels in cooperation with the Dutch company Windcat Workboats. With a fleet of more than 40 ships, Windcat Workboats is Europe's leading provider of specialist crew transfer vessels in the offshore windpower industry.

FWOL combines the long experience and considerable know-how of two companies which are well known in the shipping world: the FRS and Windcat Workboats. With a total of over 17 years of experience in the offshore wind industry, FWOL has successfully completed more than 2.1 million safe transfers to wind turbines.

CTV Windcat 43 from starside in a wind farm.
Aerial shot of a CTV Windcat 44 at a wind turbine.

FWOL provides tailormade logistics concepts which meet the requirements of the various different projects. With efficient and continuously upgraded vessels, FWOL is a reliable partner for crew transfer services.

Characteristic of the Windcat vessels is the patented Windgrip system developed by Windcat Workboats which provides advantages in regard to accessability of the turbines, profitability and flexibility. Via a winch the CTV is connected to the boatlanding which increases the bollard push by up to 9 tons. In turn, this improves the transition possbility as well as safety during high wave periods.

Experiences gathered on 29 ships that use Windgrip show that up to 300 litres of fuel can be saved daily. Additionally, the increased stability is beneficial for Remotely Operated Vehicle (ROV) operations, loading cranes as well as divers. Therefore, the Windgrip system won the “Renewable UK Health and Safety Award” in 2016.

The fitting of catalytic converters in order to reduce the NOx emissions further underscores the vessels' pioneering position with respect to environmental friendliness. Read more about the measures FRS undertakes to decrease our carbon footprint.

The crew transfer vessels Windcat 28, Windcat 34XL, Windcat 35, Windcat 42Windcat 43, Windcat 101 and Windspeed 7 are currently in operation for the daily transfer to the turbines in various different offshore windparks in the German and Danish North and Baltic Sea.


The solution for future challenges


  • Logistic services in the offshore industry
  • Infrastructure along the German North and Baltic Sea
  • Experienced technical service team operating 24/7
  • ISO 9001/14001 and OHSAS 18001 certified
  • First crew transfer vessels worldwide with catalytic converters
Docking of the CTV Windcat 28.
Windgrip system of FWOL.