Actually that made the portuguese to adapt to many of those local types of ships to deal with the tactics used by the locals that often used the abundant estuaries
Indo-Portuguese ship, 16th century.
Yes, it is.So probably Nau is just one of them
1 -The Nau was introduced in the 1480´s, constructed with two decks-the first from stem to stern, covering the hold of the ship where the cargo was contained; the second, at stem, constituted the flooring of the forecastle. Weighing about 100-200 tons, it had three masts.: square-rigged, and with top-sails on the fore- and mainmasts,and lateen-rigged (triangular sails) on the mizzen( 3rd or aft) mast to assist the movement of the ship to windward.
2 - The Great Naus weighing 350 to 600 tons and well armed, were the mainstay of the cargo fleets. Madre de Deus weighed 1600 tons.
(The galleons, lighter and more agile, and well armed, was capable of dual military and commercial uses)
During the whole of the 15th century the Portuguese were piooners (previous link) in the technology of prefabrication of ships in Ribeira das Naus, in Lisbon, that could assembled elsewhere overseas in only 12 days.
The concept of "preventive maintenaince" was also introduced at this time, which led to the dismantling of a nau after 3 to 4 journeys for substitution of deteriorated components (15h century)
The same kit technique (prefabrication in Portugal)) would be used in the construction of fortresses (involving fortification,storehouses, and chapel), which method was applied for instance in São Jorge da Mina and Isle of Mozambique fortress.
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