Footnotes:
(1) Ban Samphao Lom was situated near the Chao Phraya River in the Samphao Lom Sub-district. The village is on the Monthon Krung Kao map (1916 CE). John Bowring (1857, London, John W. Parker and Son, West Strand), in his book ‘The Kingdom and People of Siam’, wrote: "Between the modern and the ancient capital, Bangkok and Ayuthia, is a village called the “Sunken Ship,” the houses being erected round a mast which towers above the surface at low water."
(2) Khu Cham, or the Cham Ditch, is an existent canal situated off the city island in the southern area of Ayutthaya, running through the Samphao Lom and Khlong Takhian sub-districts. The canal splits off from the present Chao Phraya River about 500 meters east of Wat Phutthaisawan and runs south to join Khlong Takhian, nearly at the latter’s confluence with the Chao Phraya River.
(3) Martaban, today called Mottama, is located in Thaton District of the Mon State in Myanmar. Mottama was the first Mon capital of the Hongsawadi Kingdom from 1287 to 1363 CE and was briefly vassal to the Sukhothai Kingdom until the early 14th century. It was a flourishing trade town located at the mouth of the Salween (Thanlwin) River across from Mawlamyine (Moulmain). Martaban had a good harbour for large vessels until the Burmese conquered the town in 1541 CE and sunk several stone-filled ships at the mouth of the river. The small port of Martaban was famous for its glazed pottery (earthenware glazed with lead-oar) and known for its trade in dry fish. [Account of Pegu and the Voyage to Cambodia and Siam in 1718 - Captain Alexander Hamilton.]
References:
[1] Cushman, Richard D. & Wyatt, David K. (2006). The Royal Chronicles of Ayutthaya. Bangkok: The Siam Society. p. 256. [2] Ibid. p. 257.