IZAR Christens LNG Ship

Izar's Puerto Real Shipyard christened the LNG carrier Cadiz Knutsen, with representatives of the owners Knutsen OAS and Marpetrol and the final client, Union Fenosa Gas. This ship will transport up to 138,000 cu. m. of gas at - 163°C, and is the fourth LNG carrier built at IZAR, and the second one of those built at Puerto Real facilities.

There is a third unit under construction at this shipyard for the shipowner Fernandez Tapias. The vessel will transport gas from the Damieetta port liquefaction plant in Egypt to the gasification terminals in Ferrol and Sagunto.

Izar has three similar LNG carriers, two from the Sestao Shipyard and one more at the Puerto Real yard Cadiz Knutsen has a time charter contract signed in the year 2000 between Union Fenosa Gas and the owners Marpetrol from Spain. Knutsen will operate the LNG carrier by bareboat charter.

The LNGs built by Izar conform to all existing regulations, including double hull, double bottom in the cargo area, and the four cryogenic cargo tanks with GTT Membrane Type No. 96 E2, where the natural gas is transported at atmospheric pressure and at a temperature of - 163° C. This membranes, directly attached to the ship's double hull/double deck, etc., have two missions: To reduce the transfer of heat to the atmosphere and the cargo tanks to minimize the evaporation of liquefied natural gas and thermally insulating the structural steel and transmitting the cargo's weight to the steel structure. Each of the 0.7 mm thick and 500 mm large membranes, made of Invar sheets (metal alloy with a 36% content of nickel), counts with an insulating barrier of two layers of perlite (aluminium oxide of granular shape with silicon)-filled plywood casings to prevent water and humidity.

Maritime Reporter Magazine, page 25, Jun 2004

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