ALP Maritime Services has officially named the first of four ultra-long-distance towing and anchor-handling vessels the ‘ALP Striker’.
The vessels, of the SX157 design and with a bollard pull of around 300 tonnes, are part of the ALP Future class and have a service speed of 13 knots and top speed of 19 knots. With a fuel capacity of more than 3,500m3, they can tow at full power for 45 days, sufficient for non-stop Transatlantic/Indian and Pacific Ocean towing operations without fuel calls.
Built by Japan’s Niigata Shipbuilding & Repair, the vessels were developed in close collaboration between the Norwegian ship designer Ulstein Design & Solutions AS and the Dutch shipowner ALP Maritime Services, the latter a subsidiary of Bermuda-based Teekay Offshore Partners LP.
Vessels of this type typically tow oil rigs, or FPSOs, from the building yards to the installation site at the oil field. In addition, they are outfitted with DP2 and anchor-handling capacity in order to assist during the installation/hook-up phase of the towed objects. The vessels are 88.9m long and 21m wide.
The vessels are classed with DNV GL’s Clean Design and Ice Class 1B notations, which allow operation in restricted zones.
Additionally, they are equipped as anchor-handling vessels including stern roller, a three-drummed winch with 400-tonne hoisting capacity, and rig chain lockers. The ships have spacious accommodation for 35 persons, providing comfort during long periods at sea.
Ulstein is also responsible for the delivery of main components such as engines, thrusters and propellers, winch, power distribution and thruster drives, control system and communication system.
‘ALP Striker’s’ three sister vessels are in different phases of construction. The ‘ALP Defender’ is the next to be completed, while the ‘ALP Sweeper’ was launched in early May this year. The fourth vessel will be named the ‘ALP Keeper’.