Crowley LNG Powered ConRo Ships for Coastal Shipping
Crowley Maritime Corporation has reached another critical milestone with the recent setting of the main engine onto El Coquí, the first of two new, Commitment Class ConRo (combination container and Roll/On-Roll/Off) ships that will be powered by liquefied natural gas for use in the ocean cargo trade between Jacksonville and Puerto Rico.
The engine was placed using a series of heavy lifts by 500-ton cranes in the shipyard of VT Halter Marine, a subsidiary of VT Systems, Inc., where El Coquí (ko-kee) and sister ship, Taíno (tahy-noh), are under construction. The engine has a total weight of 759 metric tons and measures 41 feet high, 41 feet in length, and 14.7 feet wide.
Liquefied natural gas (LNG) is a stable gas that is neither toxic nor corrosive and is lighter than air. It is the cleanest fossil fuel available, netting a 100-percent reduction in sulphur oxide (SOx) and particulate matter (PM), and a 92-percent reduction in nitrogen oxide (NOx). LNG also has the ability to significantly reduce carbon dioxide (CO2), a contributor to greenhouse gas emissions, as compared with conventional fossil fuels.
Designing, building and operating LNG-powered vessels is very much in line with Crowley’s overall EcoStewardship© positioning and growth strategy. The company formed an LNG services group in 2015 to bring together the company’s extensive resources to provide LNG vessel design and construction management; transportation; product sales and distribution, and full-scale, project management solutions.
These Commitment Class, Jones Act ships are designed to travel at speeds up to 22 knots while maximizing the carriage of 53-foot, 102-inch-wide containers. Cargo capacity will be approximately 2,400 TEUs (20-foot-equivalent-units), with additional space for nearly 400 vehicles in an enclosed Ro/Ro garage.