Marine

HaiSea Marine enlists Markey Machinery to work on new escort tugs


Posted on June 14, 2021 at 10:16 a.m. by

The Maritime Executive







As the designer, builder and operator of tugs supporting LNG Canada’s new gas liquefaction and export facility currently under construction in Kitimat, British Columbia, Canada; HaiSea Marine has enlisted Markey Machinery, Company, Inc to equip its new vessels with a full line of environmentally friendly deck machinery.


Markey will design, manufacture and service a DESF-52UL 450 horsepower rod-mounted electric escort winch operating on 80mm HMPE line, a model TESS-52UL stern-mounted electric emergency towing winch with Markey controls Render/Recover®, a single-speed model CEP -60 electric capstan working mooring lines at 5 tons of pull at speeds of 65 feet per minute, and two VEPA-16 vertical anchor windlass machines mounted on the before meeting the class rules.


Recipient of the LNG Canada tug contract in 2019, HaiSea Marine identified the powerful RAstar 4000 DF class azimuth-propelled tug from Robert Allen, LTD designed for tanker escort. Equipped with Markey’s deck machinery, this extreme performer will safely escort LNG carriers on the 159 nautical mile inland transit between Kitimat and the Triple Islands.


Scott Kreis, Markey’s Vice President of Sales and Engineering, comments, “Markey is eager to begin detailed engineering to get this suite of machines ready for production. Then work with escort tug builder, Sanmar Shipyard, as our green machines are delivered and installed on escort vessels as capable as these RAstar 4000 tugs.”


Most people know that variable frequency motor controllers consume onboard power only when machines are running. Even though all-electric machines conserve energy and reduce stack emissions compared to other types of power like electro-hydraulics, Markey engineers take green to the next level.


Mr. Kreis explains, “During detailed design, Markey engineers will improve the drivetrain efficiency of our model DESF-52 Hawser Winch by ensuring that a small portion of the 450 horsepower air-cooled engine water is wasted. In this phase of engineering, one of the goals is to uncover the inefficiencies that occur in hoist operations. Engineers use computer-aided design tools to optimize transmission design which, in turn, improves winch responsiveness while reducing stack emissions. Reducing emissions is environmentally friendly for all communities along the sea route. »


A second goal of detail engineering is to ensure Class III escort machines meet HaiSea Marine standards for line pull, braking force and holding power. Markey engineers use mathematical modeling to confirm that DESF-52-UL performance meets LNG Canada’s Kitimat facility requirements. Then, after installation and before the tugs go into service, the deck machinery, power and controls are functionally tested to validate that they perform escort duties efficiently, reliably and safely in high energy ocean environments.


Here Mr. Kreis sums up Markey’s feeling of being selected for the project: “In addition to reducing the environmental footprint, Markey is proud that its Markey Render / Recover® Class III asymmetric Hawser winches are state of the art. Technology Bollard pulling tugs as LNG carriers navigate safely through the Douglas, Squally, Otter and Principe Canals of British Columbia, Canada.



The products and services described in this press release are not endorsed by The Maritime Executive.