Coastal Energy Company (Coastal) is an international oil and gas exploration and development company with operations in offshore Thailand and Malaysia, and an interest in a joint venture which operates in northeastern Thailand. The Company holds a 100% working interest in Blocks G5/43 and G5/50 in the Gulf of Thailand. The combined area of the blocks is approximately 2,777 square kilometers and average water depths are approximately 70 feet. Block G5/50 is an exploration concession north of the Songkhla basin and contains approximately 283 square kilometers of acreage within the boundaries of Block G5/43. Its Thailand onshore interests are held through its investment in Apico LLC (Apico). Coastal holds an interest of 13.7% in Blocks EU-1 and E-5N onshore Thailand through its 39% investment in Apico, which holds a 35% non-operated working interest in the blocks. Coastal also holds a net 39% working interest in Block L27/43 (operated by Apico), which is located southeast of Sinphuhorm.