The U. S. S. Concord, gunboat, 1,710 tons, speed, 16.8 knots. Battery: six 6-inch rifles, two 6-pounder, two 3-pounder rapid-fire guns, two 37-millimetre Hotchkiss cannon, and two Gatlings.
The U. S. S. Petrel, gunboat, 892 tons, speed, 11.7 knots. Battery: four 6-inch rifles, one 1-pounder rapid-fire gun, two 37-millimetre Hotchkiss cannon, and two Gatlings.
The U. S. S. McCulloch, revenue cutter, 1,500 tons, speed, fourteen knots. Battery: four 4-inch guns.
The Nanshan and Zafiro, supply ships.
SPANISH FLEET.
The Reina Maria Christina, 3,520 tons, speed, seventeen knots. Battery: six 6.2-inch hontoria guns, two 2.7-inch and three 2.2-inch rapid-fire rifles, six 1.4-inch, and two machine guns.
The Castilla, 3,342 tons. Battery: four 5.9-inch Krupp rifles, two 4.7-inch, two 3.3-inch, four 2.5-inch rapid-fire, and two machine guns.
The Velasco, 1,152 tons. Battery: three 5.9-inch Armstrong rifles, two 2.7-inch hontorias, and two machine guns.
The Don Antonio de Ulloa and Don Juan de Austria, each 1,130 tons, speed, fourteen knots. Battery: four 4.7-inch hontorias, three 3.2-inch rapid-fire, two 1.5-inch, and two machine guns.
The General Lezo, and El Correo, gun vessels, 524 tons, speed, 11.5 knots. The General Lezo had two hontoria rifles of 4.7-inch calibre, one 3.5-inch, two small rapid-fire, and one machine gun; the El Correo had three 4.7-inch guns, two small rapid-fire, and two machine guns.