ASL Shipyards in Singapore has won a contract to build three pollution response vessels, whose design leans heavily on escort tug architecture. Western Canada Marine Response Corp ordered the three response vessels to protect Canada’s west coast.
The vessels will increase offshore spill response capabilities for the Trans Mountain pipeline expansion project. ASL will build these vessels to Robert Allan’s BRAvo 2500 design, which uses elements of the naval architect’s experience in designing escort tugs.
These 25 m vessels will be pollution response platforms custom-designed to meet the formidable environmental conditions and demanding requirements of Canada’s west coast.
They will act as a mothership to other smaller vessels during the response to spills, and be capable of deploying containment equipment, transferring components between vessels, and will store oil in internal tanks or offload oil into barges.
These vessels will have Caterpillar C9.3 main engines and two Caterpillar C4.4 service generator sets. They will be classed by Lloyd’s Register and built to meet Transport Canada requirements.
Robert Allan worked on the design of these vessels, including the use of computational fluid dynamics, since the start of this year. It used its designs for the RAstar series of offshore escort tugs for the hull form and hull sponsons. The vessels will have large bilge keels, twin skegs and a bulbous bow.
For oil containment, they will have Kepner self-inflating offshore booms stored on a large powered reel and a Current Buster 4 sweep system. BRAvo 2500 vessels will have an aft swim platform that allows easy access to the water surface for recovering and deploying equipment with the vessel’s crane.