Guns. 31 ships of all sizes, mounting an aggregate of 2,866 61 frigates do do 3,028 49 corvettes do do 1,024 57 brigs do do 1,006 14 corvettes de charge do do 448 28 sloops do do 444 38 schooners do do 228 33 cutters do do 132 --- ----- 317 sailing vessels, carrying a grand aggregate of 9,176 STEAM VESSELS. 27 ships of all sizes, mounting an aggregate of 2,680 21 frigates do do do 336 4 frigates, (new construction,) do 200 34 corvettes of all sizes do 939 76 advice boats do do 456 4 floating batteries do 64 19 gun boats do 76 25 mixed transports do 150 --- ----- 220 steam vessels, mounting an aggregate of 4,901 ORDINARY CLASSIFICATION OF NAVAL OFFICERS. 2 admirals in time of peace, and 3 in time of war; 13 vice admirals; 22 rear admirals; 113 captains of ships of the 1st and 2d classes; 235 captains of frigates; 679 lieutenants of ships of the 1st and 2d classes; 550 ensigns of ships; 109 midshipmen of 1st class; 165 midshipmen of the 2d class. With respect to the classes of midshipmen, the admiral minister of marine regulates yearly the number of young gentlemen who may be received in the service. According to the navy list for 1856, (July,) the effective force of the navy of Great Britain was at that period: Guns. Sailing vessels, 269, carrying an aggregate of 9,362 Steam vessels, 258 do do 4,518 --- ------ Total, 527 do do 13,880 The classification of officers was: In service. On half pay. Retired. Total. Admirals, 21 15 --- 36 Vice-admirals, 27 19 --- 46 Rear-admirals, 51 55 129 235 Captains of ships, 396 60 318 774 Commanders, 551 64 286 901 Lieutenants, 1,139 668 --- 1,807 NAVY OF THE UNITED STATES.