Fearing a possible naval attack along the shores of Golden Horn Bay, Emperor Constantine XI ordered a chain of barricades across the port’s door. This chain, floating on the water thanks to wooden panels, is strong enough to prevent any Turkish ship from entering the harbor. Transportation student delivery specialist shirt. This device is one of two strategies that Byzantine hopes to delay the siege until it receives foreign help. This strategy was implemented because in 1204 the Fourth Crusaders broke Constantinople’s defenses thanks to the destruction of the walls of the Golden Horn Bay. The Byzantine’s remaining strategy is the repair and reinforcement of Theodosian Walls. Emperor Constantine ordered the strengthening of the wall of the Blachernae area to be the most important because it was part of the wall that protruded to the north. The fortifications of the walls include a moat of 60 ft (18 m) wide in front of the inner walls and the outside is arranged with towers 50-60 yards apart.