126 NAVIGATION. 



American Tonnage. 



Tons. 

 1821. Amount of the import* tonnage in 7 ~ Rr AAA 



American ships } 7bJ ' 



ditto . . . export . . ditto 804,000 



Average Voyages. 



Days. 

 Average length of a voyage out and home to 7 , AA 



Batavia J 



ditto .... ditto . . . Bombay 320 

 ditto .... ditto . . . Bengal 365 

 ditto .... ditto . . . China 365 



First Rates. 



In A. D. 1667, ships of the first rate, or 100 guns, 

 were from 1500 to 1600 tons burthen. 



In 1720, they were increased to 1800 tons; in 

 1745, they advanced to 2000 tons; during the 

 American war to 2,200 tons; in 1795, the Ville de 

 Paris of 110 guns, measured 2350 tons; in 1804, 

 the Hibernia of 110 guns, was extended to 2500 

 tons ; and in 1808 the Caledonia, carrying 120 guns, 

 measured 2616 tons ; since which date the Nelson, 

 the Howe, the St. Vincent, Britannia, Prince 

 Regent, Royal George, and Neptune, have been 

 built, or ordered to be built, of the same size and 

 draught nearly. 



The Caledonia. 



Length of the gun deck 205 feet ; of the keel 170 

 feet Extreme breadth 53 feet 8 inches ; depth in 

 the hold 23 feet 2 inches Burden 2616 tons. 



* It would have been more satisfactory to have had the 

 registered tonnage. 



