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Technical Information

HMS UNICORN, 46 gun, 5th Rate Frigate, Launched 30th March 1824 at Chatham

Designer Sir Robert Seppings
  (Surveyor of the Navy 1813-1832)
“Built to the lines of the old LEDA” on No. 4 Slip, H.M. Dockyard, Chatham.
Master Shipwright George Parkin    

Note: LEDA was herself built to the lines of the French frigate HEBE, captured by RAINBOW in 1782.

Armament

Main Deck 28 x 18 pounder long guns
Forecastle 2 x 9 pounder long guns
2 x 32 pounder carronades
Quarterdeck 2 x 9 pounder long guns
12 x 32 pounder carronades
Weight of Guns, etc. 80 tons 7 cwt
Weight of Gunpowder 11 tons 19 cwt
Weight of Shot 45 tons 10 cwt

Note:  The exact mix of long guns and carronades would have varied with time, as carronades became increasingly popular.

Hull Dimensions

Length of Gun Deck 151 ft 9 3/4 ins
Length between Perps. 140 ft 9 ins
Length of Keel for Tonnage 127 ft 1 1/2 ins
Breadth extreme 40 ft 3 ins
Depth in Hold 12 ft 9 ins
Load Draught – forward 17 ft 6 ins
                          – aft 19 ft 2 ins
Burthen 1078 tons
Displacement, fully stored 1465 tons 12 quarters
Cost of building the Hull £26,461
Cost of Materials £20,831
Cost of Workmanship £5,630
(Cost of completing the ship for sea in 1824 would have been £39,268)

Masts and Rigging

Height of Main Mast 131 ft 3 ins
Diameter of Main Mast 28 ins
Length of Main Yard 78 ft 9 ins
Total Weight of Masts 47 tons 16 quarters
Length of Rope above 3/4 inch circumference  20,728 fathoms (23 1/2 miles)
Total Weight of Rigging 31 tons 8 quarters
Area of Sails 17,254 square feet
Total Weight of Canvas 6 tons 1 quarter(7,307 yards of canvas)

Scheme of Complement

Captain 1
Lieutenants 5
Warrant Officers 8
Midshipmen & Mates 8
1st Class Petty Officers 31
2nd Class Petty Officers 19
Other Rates 159
Boys 16
Widows’ Men 3
Royal Marine Officers 2
Sergeants 2
Other Ranks 46
Total War Complement 300 men

Note:  These figures vary from source to source, and from time to time, and also according to whether the ship would have been commissioned for war or peace.