[400] Esmeraldo de Situ Orbis, Lisbon, 1892, p. 99.
[401] Esmeraldo, p. 99.
[402] A ton register is of a capacity of 100 cubic feet; a ton measurement is usually assumed to have a capacity of 40 cubic feet. Hence 400 tons measurement would be equivalent to 160 tons register, instead of 250 to 300.
[403] Le construzione navali (Raccolta Colombiana), Rome, 1893, p. 76.
[404] The palmo de goa was equal to 293 m.m., and the tonel consequently measured 2.42 cubic metres or 85 cubic feet. “Goa” has nothing to do either with agoa, or with the town of that name in India, but is a corruption of “gouê”, a measure anciently used by shipbuilders in the Mediterranean (see Lopez de Mendonça, loc. cit., p. 118).
[405] Os Navios de Vasco da Gama, Lisbon, June, 1892.
[406] Noticia sobre e Não S. Gabriel, Lisbon, August, 1892.
[407] Captain Braz d’Oliveira gives the following dimensions: length, 106 ft.; keel, 54.5 ft.; beam, 20 ft.; draught, aft, 10.5 ft.; depth, 18 ft.
[408] This consists in multiplying length of keel, breadth and depth, and dividing by thirty. The result is expressed in botte.
[409] See J. de Barros, Dec. I, l. vi, c. 3.