THE Hong Kong Salvage and Towage Co (HKST) has taken delivery of two new tugs for use in Hong Kong harbour. The Hong Kong-registered Ngan Chau and Sung Kong are designed to be used for harbour, coastal and ocean towage, and are especially suitable for terminal operations. The vessels bring the HKST fleet up to 21 vessels with an average age of less than six years. Seven ships are ocean-going tugs and the remainder are coastal vessels. Most are based in Hong Kong, but some are now employed in the Arabian Gulf, Indonesia and offshore China. HKST said it had been management policy to invest in environmentally friendly equipment. The new tugs were coated with an anti-fouling paint, had a sewage treatment system and an oily water separater. They are classed with Bureau Veritas.