At around 23:00 a rain of cannonballs and musket bullets from the batteries of Paso Alto, San Miguel, San Antonio and San Pedro fell on the approaching British whose own ammunition was damp with seawater. Several shots reached the cutter's hull. Some of the boats reached the beaches and marines managed to spike a couple of cannons, yet others drifted away. Spanish mortars and cannons focused on the successful sailors and swept them away. Many British casualties were left scattered on the beach. An immense line of fire, ranged from Paso Alto to San Telmo castle, targeted the small vessels. Before midnight the cutter "Fox" was hit by crossfire from the heights and sunk, with Gibson and 17 of his men being drowned.