Caledonia-class ship of the line

The "Caledonia"-class ships of the line were a class of nine 120-gun first rates, designed for the Royal Navy by Sir William Rule. A tenth ship ("Royal Frederick") was ordered on 29 October 1827 to the same design, but was launched in 1833 as "Queen" to a fresh design by Sir William Symonds.
Armament.
In the original configuration, the armament of the "Caledonia" class was consistent for the first three ships of the class. The exception was an increase in firepower on the poop deck from 2 to 6 18-pounder carronades. 
Starting with the fourth ship, the armament of the class was significantly modified to adhere to the principle of a unified caliber of 32 pound. All guns on the middle and upper gun decks were replaced with the same number of 32-pounders. Except for two 24-pounders on the middle deck that were replaced by two 8 inch shell guns. Four of the 12-pounder guns on the quarterdeck were replaced with 32-pounder carronades. The remaining two were increased to 18-pounders, along with the two 12-pounders on the forecastle, and the carronades on the poop deck were removed. 
By 1847 the armament had been brought to the 32 pounder standard.
Size.
The last five ships of the class were built to a slightly broadened version of the draught, and this sub-class was armed in the same way as the last of the standard "Caledonia"s, . Except for "Caledonia" herself, all these ships were converted into steam-powered screw battleships during the 1850s.