{{Short description|Historic category for Royal Navy ships}} {{about|Royal Navy ships of the line|the adjective meaning that something is of inferior quality|wikt:third-rate|the rating of late Georgian and early Victorian buildings|Building Act 1774}} {{Use dmy dates|date=October 2017}} {{Use British English|date=October 2017}} {{more footnotes|date=February 2013}} [[File:HMSBuckingham.jpg|thumb|The third-rate HMS ''Buckingham'' on the stocks before its launch in 1751]] [[File:HMS Melville and Graham Island.jpg|thumb|Painting of the third-rate HMS ''Melville'']] In the rating system of the Royal Navy, a '''third-rate''' was a ship of the line which from the 1720s mounted between 64 and 80 guns, typically built with two gun decks (thus the related term two-decker).

== Rating ==

When the rating system was first established in the 1620s, the third rate was defined as those ships having at least 200 but not more than 300 men; previous to this, the type had been classified as "middling ships". By the 1660s, the means of classification had shifted from the number of men to the number of carriage-mounted guns, and third rates at that time mounted between 48 and 60 guns. By the turn of the century, the criterion boundaries had increased and third rate carried more than 60 guns, with second rates having between 90 and 98 guns, while first rates had 100 guns or more, and fourth rates between 48 and 60 guns. By the latter half of the 18th century, they carried between 60 and 80 guns.<ref>Winfield 2007, p. 27</ref>

This designation became especially common because it included the seventy-four gun ship, which eventually came to be the most popular size of large ship for navies of several different nations. It was an easier ship to handle than a first- or second-rate ship, but still possessed enough firepower to potentially destroy any single opponent other than a three-decker. It was also cheaper to operate.

By the end of the 18th century, ships of the line were usually categorized directly by their number of guns, the numbers even being used as the name of the class, as in "a squadron of three 74s", but officially the rating system continued until the end of the Age of Sail, only undergoing a modification in 1817.

Note that the use of terms like "third-rate" in literature can lead to confusion: The French Navy had a different system of five rates or ''rangs'', but some British authors use the Royal Navy's rating of "third rate" when speaking of a French 74.

==Citations== {{Reflist}}

== Bibliography == *{{cite book |last=Bennett |first=Geoffrey |title=The Battle of Trafalgar |year=2004 |isbn=1-84415-107-7}} *{{cite book |editor1-last=Gardiner |editor1-first=Robert |title=The Line of Battle: The Sailing Warship, 1650–1840 |date=1992 |publisher=Naval Institute Press |isbn=1-55750-501-2|series=Conway's History of the Ship}} *{{cite book |last=Rodger |first=N. A. M. |title=The Command of the Ocean, a Naval History of Britain 1649–1815 |year=2004 |isbn=0-7139-9411-8|author-link=Nicholas A. M. Rodger}} *{{cite book|last=Winfield|first=Rif|title=British Warships in the Age of Sail 1603–1714: Design, Construction, Careers and Fates|publisher=Seaforth Publishing|year=2009|isbn=978-1-84832-040-6}} *{{cite book|last=Winfield|first=Rif|title=British Warships in the Age of Sail 1714–1792: Design, Construction, Careers and Fates|publisher=Seaforth Publishing|year=2007|isbn=978-1-84415-700-6}} * {{cite book |first=Rif|last=Winfield|title=British Warships in the Age of Sail 1793–1817: Design, Construction, Careers and Fates|publisher=Seaforth|year=2008|isbn=978-1-84415-717-4|edition=2nd, revised|orig-year=2005}} *{{cite book|last1=Winfield|first1=Rif|title=British Warships in the Age of Sail 1817–1863: Design, Construction, Careers and Fates|date=2014|publisher=Seaforth Publishing|isbn=978-1-84832-169-4}}

{{Rating system of the Royal Navy}}

3rd-rate