Established since 1980, Marsun Public Company Limited is strategically located near Bangkok at Samutprakarn, at the mouth of the Chao Phraya River. For international customers, Suvarnabhumi International Airport is approximately 30 kilometers away from the yard.

Marsun has delivered over 317 various types of vessels. These include Fast Patrol Craft, Fast Attack Missile Craft, Crew and Supply Vessels, Ferries, Motor Yachts, Oil Spill Recovery Vessels, Multi-Purpose Craft etc. In addition to these, Marsun has also provided consultation on design, construction and repair to meet wide-ranging requirements for both domestic and international customers.
Since begining, Marsun has cotinuously earned a reputation as a quality shipbuilder. The company proudly presents her perfect 100 percent on-time delivery record. A record we aim to maintain at all times. Our vessels must achieve all performance's requirements in pre-delivery test and trial period to assure customer's satisfaction. 
Since 2000, the company has aggressively served the needs of the international marine market. This has resulted in our winning a number of international tenders. 
With our strong commitment to quality, Marsun was achieved the ISO 9001:2015 certification for the provision of Design, building and repairing of ship and boats by Lloyd’s Register Quality Assurance (LRQA), and the ISO14001:2015 standard of JAS-ANZ and ISO14001:2015 standard of NAC for systematize the shipyard’s environmental management system and the ISO 45001:2018 standard for occupational health and safety by SGS Thailand. We have a commitment to develop knowledge and skills of our workforce in line to increase capacity in shipbuilding and to be recognized as a Major Leading player in the global shipbuilding industry.