Most Buddhist temples are happy to welcome a visiting yacht for the night. Indeed, you’re likely to become the chief attraction of the local village.
Water is readily available, and basic Thai food can be found in the markets of Pathum Thani, Bang Pa-In and Ayutthaya.
Above Ayutthaya, the Chao Phraya River is no longer subject to tidal currents, and is purely fresh water. The river is regulated by the dam at Chai Nat, some 120 kilometres upstream; the 2-3 knot current allows for pleasant navigation.
Giant shade trees, sounds of gongs from fantastic temples appearing every 500 metres or so, houses on stilts with small wooden jetties from which children swim in the river, little wooden sampans selling bananas – it’s a trip back in time.
The city of Ang Thong is the most convenient for food supplies, but provisions are also available from the markets of Singburi and Inburi.
From Inburi to Chai Nat Dam, the banks are steep. Watch out for sandbanks, especially in the dry season (March to May). Fortunately, a good navigation aid in the form of a series of black buoys is available.
Avoid leaving the channel, not more than 3 metres deep at some points. The temples along this stretch are inaccessible, since the river is 5-6 metres below its natural banking, and no overnight stop is possible.
The lock to the Chai Nat Dam is on the east bank and makes a potential stop for the night. Chai Nat town is some 3 kilometres farther along. There are local taxis and small restaurants at the dam.