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Carvel built : ウィキペディア英語版 | Carvel (boat building)
Carvel built or carvel planking is a method of boat building where hull planks are fastened edge to edge, gaining support from the frame and forming a smooth surface. In contrast with clinker built hulls, where planked edges overlap, carvel construction gives a stronger hull capable of taking a variety of full-rigged sail plans, albeit one of greater weight. In addition, it enables greater length and breadth of hull and superior sail rigs because of its strong framing, and is one of the critical developments that led to the preeminence of Western European seapower during the Age of Sail and beyond. Carvel developed through transition from the age-old Mediterranean mortise and tenon joint method to the skeleton-first hull building technique which gradually emerged in the medieval period. ==History== The first carvel-built ships were the carracks and caravels of the fourteenth and fifteenth centuries. Both were developed in Iberia and were sailed by the kingdoms of Portugal and Spain in the early trans-oceanic voyages of the Age of Exploration. At the same time as their appearance, the centuries-long battles to expel the Muslims from Iberia were gradually swinging to the Christian side, represented by the Kingdom of Aragon and the Kingdom of Castile, which were not united into Spain until the time of Christopher Columbus. Their invention is generally credited to the Portuguese people, who first explored the Atlantic islands and south along the coast of Africa, searching for a trade route to the far east in order to avoid the costly middlemen of the Eastern Mediterranean civilizations who sat upon the routes of the spice trade. Spices, in the era, were expensive luxuries and were used medicinally.
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