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How did Mehmed II move Ottoman ships into the Golden Horn during the siege of Constantinople?

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This map shows the territorial expansion of the Ottoman Empire from 1300 to its greatest extent in 1683-99, highlighting different periods under rulers such as Mehmed II, Selim I, and Süleyman the Magnificent, and marking key cities, seas, and geographical boundaries in Europe, North Africa, and the Middle East. — Ottoman Empire Map showing the expansion of the Ottoman Empire from about 1300 to 1700. The empire reached its greatest extent between 1683 and 1699.

To bypass the defensive chain protecting the Golden Horn during the siege of Constantinople, Sultan Mehmed II ordered the construction of an oiled wooden ramp. Using this structure, his forces portaged their smaller vessels overland from the Bosporus into the Golden Horn. By April 22, 1453, the ships had successfully circumvented the chain, allowing the Ottoman fleet to seize control of the waters surrounding the city.12