HTMS Laem Singh is the first and sole patrol gunboat designed and built by Thai people as part of the sufficiency economy guidelines and the Royal Thai Naval Dockyard's capability development in shipbuilding after successfully constructing the Tor. 991 patrol boat. HTMS Laem Singh is capable of conducting surface warfare operations and fighting air threats. It comes under the standards of International Association of Classification Societies, the U.S. Navy Criteria, and the International Maritime Organization.