In a ceremony off the coast of Koh Chuang, Thailand, a patrol vessel was sunk to create an artificial coral reef. Presided over by Admiral Adung Phaniam of the Royal Thai Navy, the ceremony marked the end of an era for the Tor.91 class of patrol boats, which were built between 1967 and 1987. Officials hope the site will become a new tourist attraction for divers and marine life.