KR Grants AIP to HHI for LNG Dual-fuel Car Carriers

The Korean Register has granted approval in principle (AIP) to verify the suitability of a liquefied natural gas (LNG) dual fuel propulsion car carrier developed by Hyundai Heavy Industries (HHI). The AIP covers two pure car and truck carrier (PCTC) vessels with a respective capacity of 7,000 car equivalent units (CEU) and 8,100 CEU.

Both vessels are equipped with International Maritime Organization (IMO) type C tanks which are independent self-supporting LNG fuel tanks. The two vessels will be fitted with dual fuel systems that can use LNG and oil alternately and the ship design uses the optimum deployment of the fuel tanks to facilitate the loading of vehicles for shipping. A comprehensive risk analysis has been completed to safely block and control automobile exhaust gas and LNG fuel gas.

The IMO classifies LNG gas carrier fuel tank into two types: membrane tank and independent self-supporting tank. Independent tanks are further divided into Type A, Type B, and Type C tanks. A Type C tank uses pressure containment system that ensures safety and reliability and no risk of leakage.