World Leading Marine CNG Ship Design

CNG Optimum

GEV’s CNG Optimum ship is the next generation of Marine CNG gas transportation and the result of two decades of developing a low-cost, volume efficient CNG ship design. The CNG Optimum ship is now construction ready with GEV seeking to commercialise CNG projects using an integrated ‘Pipe to Pipe’ Business Model which includes loading, shipping and unloading.

The CNG Optimum ship design maximizes the amount of Compressed Natural Gas that can be stored within the hull of a ship, with a capacity of 200 million standard cubic feet. The Optimum containment system is constructed using hexagonal close-packed, high strength pipes that run the entire length of the ship’s cargo hold. The simplicity of the design and the invention of a mechanism to clamp the gas storage pipes so tightly together that they become locked together as one, allows this design to meet all classification requirements.

optimum-cutaway

American Bureau of Shipping (ABS) issued its formal letter in January 2019 granting approval for construction of the CNG Optimum ship as designed, subject to continued compliance with applicable ABS Rules and Guidelines. Approval of the CNG Optimum ship design follows the completion in December 2018 of the extensive work program including; prototype testing of the Optimum system, review and verification of the design, review of the safety studies and a Hazard and Operability Analysis (HAZOP). Granting of the letter of approval by ABS is a major milestone for GEV and the culmination of three years of effort.

CNG Optimum Design & Construction Partners

shipping-partners

GEV’s shipping team is supported by a team of global experts in the design and construction of the CNG Optimum ship, including Clarksons Platou as our Ship Broker, SeaQuest Marine as our Lead Technical Consultant and Yantai CIMC Raffles Offshore as the Shipyard for construction.

In July 2019, GEV entered into a Letter of Intent with Yantai CIMC Raffles Offshore to build the CNG Optimum 200MMscf ship. 

GEV and CIMC Raffles will now work towards a binding shipbuilding Engineering, Procurement & Construction contract, employing GEV’s CNG Optimum design, for 4 firm CNG Optimum ships, with the option for GEV to order up to an additional 4 ships.

The selection of CIMC Raffles has been driven by the commercial terms under the LOI. CIMC Raffles has a strong track record, delivering in excess of US$6 Billion in EPC contracts since 2012. CIMC has the required gas expertise, large in house design and gas handling department having built the first and only marine CNG carrier in 2016.

Environmental Benefits

Natural gas is a vital component of a sustainable energy future, being the ‘transition fuel’ to renewables.

Natural gas usage will increase to replace coal and heavy fuel oil in power plants. This switch in power generation has the greatest short term impact – significantly reducing all polluting emissions and improving air quality.

How Natural Gas compares to Fuel Oil when used for power generation:

  • Reduces Carbon Dioxide (CO2) by 29%
  • Reduces Oxides of Nitrogen (NOx) by 78%
  • Reduces Oxides of Sulphur (SOx) by 99.9%
  • Reduces Particulates by 90%

Marine CNG not only supports the expansion of natural gas usage by land-based customers, but enhances the marine environment as well.

CNG Optimum ships will be equipped with dual fuel engines which run on natural gas from their own cargo. As a result, these ships will be among the cleanest running in the world. Reducing emissions from the shipping industry is a key focus for the International Maritime Organization, who as of January 1, 2020 will be enforcing strict regulations on marine fuels.