金角湾
The sea walls were weaker than Constantinople's land walls, and Mehmed was determined to get his fleet into the Golden Horn; he needed some way to circumvent Constantine's chain. On 23 April, the defenders of Constantinople observed the Ottoman fleet managed to get into the Golden Horn by being pulled across a massive series of tracks, constructed on Mehmed's orders, across the hill behind Galata, the Genoese colony on the opposite side of the Golden Horn. Although the Venetians attempted to attack the ships and set fire to them, their attempt was unsuccessful.