In depth analysis of the Phanom-Surin shipwreck discovered in Samutsakorn, Lower Central Plain, Thailand has provided new insights into how ships used in the maritime Silk Route during the 8th and 9th Centuries CE were built, and the types technologies used to build them. Close examination of the ship’s remains in 2021 revealed that the Phanom-Surin Shipwreck was a carvel built, double-ended ship. The keel was discovered in the middle of the ship with the garboard secured to the keel permanently by a large number of ropes. The stem attaches to the keel’s socket, while the sternpost is missing. Frames were lashed to planks by ropes using a bowline knot. While through beams were stored in their original place. The stringers were tightened to the frame using rattan ropes and wedges. Some stringers were edge downed, which indicates that they were produced from reused timber. The various wood species identified and used in the manufacture of the Phanom-Surin are present in Southeast Asia, and this suggests the ship could possibly have been built locally – though this interpretation remains somewhat controversial. In this presentation I discuss in more detail the craftsmanship used in the design and construction the Phanom-Surin, a vessel trading along the coasts of Southeast Asia in the mid-1st millennium CE.