The Penelope, Captain St. G. D. A. Irvine, 4,390 tons, 4,700 h.p., 230 men, 8 8-inch 9-ton and 3 40-pounder guns.
The Hecla, torpedo vessel, 6,400 tons, 1,760 h.p., 251 men, and 6 guns.
The Helicon, despatch vessel, 1,000 tons, carrying 2 20-pounder guns.
The Condor and Bittern, gun-vessels, 805 tons, 100 men, 1 7-inch and 2 40-pounder guns each.
The Beacon, gunboat, 603 tons, 80 men, 1 7-inch and 1 64-pounder gun.
The Cygnet and Decoy, gunboats, 455 and 430 tons, 60 men, 2 64-pounder and 2 20-pounder guns each.
In addition to the armament above given, the eight ironclads each carried from six to eight 20-pounder rifled breech-loading guns, and, with the exception of the Penelope, from eight to twelve machine guns.
There were also 880 supernumerary seamen and marines on board the fleet, making the total force 5,728 men.
The relative strength of the opposing forces may be seen from the following tables:—
The ordnance mounted in the forts was as follows:—