Royal Thai Survey Department

Royal Thai Survey Department (กรมแผนที่ทหาร)
Country	Thailand
Branch	Royal Thai Army

The Royal Thai Survey Department (Thai: กรมแผนที่ทหาร) is a Special Services Group of Headquarters, Royal Thai Armed Forces (กองบัญชาการกองทัพไทย) tasked to conduct land and aerial survey, geodesy and geophysics works in Thailand. The headquarters of the Survey Department are located on Kanlayan Maitri Road in the Phra Ratchawang subdistrict of Phra Nakhon District, Bangkok, (ถนนกัลยาณไมตรี แขวงพระราชวัง เขตพระนคร กรุงเทพฯ) and the current Department Director is Lieutenant General Noppadon Chotisiri (พลโท นพดล โชติศิริ เจ้ากรมแผนที่ทหาร.)

map surveying in Thailand began in 1875 during the reign of King Chulalongkorn (Rama V) with the establishment of a Mapping Division to lay out the map for telegraphic activities linking Bangkok to Phra Tabong (Battambang) and also to map around the Thai Gulf.

Prince Damrong (then known as Phra Ong Chao Ditsawarakuman) conceived the idea of forming a Survey Department. King Rama V granted the establishment of the Thai Survey School in 1882, with initial recruits coming from the Royal Guards. A royal decree issued September 3, 1885, separated the surveyors from the royal bodyguard and created the Royal Survey Department.

The department then engaged in cadastral survey, which is the survey of specific land parcels to define ownership for land registration, and for equitable taxation. Land title deeds are issued using the Torrens title system, though it was not until the year 1901 that the first–fruits of this survey were obtained.

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