ME-GI for first Crowley ConRo passes milestone test

The engine is the first of two 8S70ME-C8.2-GI units for delivery to VT Halter Marine, Pascagoula, MS, for installation in the two 2,400 TEU ConRo ships it is building for Crowley Maritime Corporation.

The vessels will be two of the world’s first LNG-powered ConRo ships, with container Lift-on/Lift-off (LO/LO) and vehicle Roll-on/Roll-off (RO/RO) loading. Designed to travel at speeds up to 22 knots, they will be 219.5 m long, 32.3 m wide and have a deep draft of 10 m. In addition to carrying 2,400 TEU of containers they will be able to carry nearly 400 vehicles in an enclosed Roll-on/Roll-off garage.

Crowley ordered the ME-GI engines, along with three MAN 9L28/32DF auxiliary engines for each vessel, in early-2014. The company selected the high-pressure, Diesel-cycle ME-GI engines because of their high efficiency and power concentration. The ME-GI’s ability to avoid derating, and its negligible methane slip, also contributed to its selection.

Crowley reports that the newbuildings will reduce the amount of CO2 emissions attributable to each container by approximately 38%.

The ships will meet or exceed all regulatory requirements and will have the CLEAN notation, which requires limitation of operational emissions and discharges, as well as the Green Passport, both issued by DNV GL.

The ME-GI engine

The ME-GI engine is the culmination of many years’ work, and gives shipowners and operators the option of utilizing fuel or gas depending on relative price and availability, as well as environmental considerations.

The ME-GI uses high-pressure gas injection that allows it to maintain the numerous positive attributes of MAN B&W low-speed engines that have made them the default choice of the maritime community. The ME-GI is not affected by the multiple de-ratings, fuel-quality adjustments or large methane-slip issues that have been seen with other dual-fuel solutions.

MAN Diesel & Turbo sees significant opportunities ahead for gas-fueled tonnage as fuel prices rise and exhaust emission limits tighten. Research indicates that the ME-GI engine delivers significant reductions in CO2, NOx and SOx emissions. Its negligible methane slip makes it even more environmentally friendly

An ME-LGI counterpart that uses LPG, methanol and other liquid gases is also available, and has already been ordered.
Factory Acceptance Test attendees pictured in front of the ME-GI engine at MES’s Tamano Works

VIDEO: Crowley’s LNG fueled ConRo now 25% complete

 

First steel for the ship was cut in October 2014 and it is now 25 percent complete.

“Week by week, we have watched the pair of Commitment Class ships begin to take shape,” said John Hourihan, senior vice president and general manager, Puerto Rico/Caribbean liner services. “It’s been incredible to watch. Once fully constructed, these new vessels will embody superior technology and construction and, while we are anxious to get them into service for our partners in Puerto Rico, we are thrilled that they are coming together on schedule.”

“The entire team at VT Halter Marine is pleased and proud to be partnered with Crowley in the construction of these magnificent ships,” said VT Halter Marine President and CEO Jack Prendergast. “It is a pleasure to see the hard work of the Crowley/Halter team come to fruition.”

The ships will be 219.5 meters long, 32.3 meters wide (beam), have a deep draft of 10 meters, and an approximate deadweight capacity of 26,500 metric tons.Cargo capacity will be approximately 2,400 TEUs (20-foot-equivalent-units), with additional space for nearly 400 vehicles in an enclosed Roll-on/Roll-off garage.

Each ship will be powered by an MAN B&W 8S70ME-GI8.2 main engine and three MAN 9L28/32DF auxiliary engines fueled by LNG.

The ship design is provided by Wärtsilä Ship Design in conjunction with Crowley subsidiary Jensen Maritime, a leading Seattle-based naval architecture and marine engineering firm.

The Commitment Class, Jones Act ships will replace Crowley’s towed triple-deck barge fleet, which has served the trade continuously and with distinction since the early 1970s. These new ships will offer customers fast ocean transit times, while accommodating the company’s diverse equipment selection and cargo handling flexibility. El Coquí and Taíno are scheduled for delivery second and fourth quarter 2017 respectively.

Designing, building and operating LNG-powered vessels is in line with Crowley’s overall EcoStewardship positioning and growth strategy. The company formed an LNG services group earlier this year 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.

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