HMS Britannia was a 100-gun first rate ship of the line

Ship of the line

A ship of the line was a type of naval warship constructed from the 17th through the mid-19th century to take part in the naval tactic known as the line of battle, in which two columns of opposing warships would manoeuvre to bring the greatest weight of broadside guns to bear...

 of the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

, built by Phineas Pett II at Chatham Dockyard

Chatham Dockyard

Chatham Dockyard, located on the River Medway and of which two-thirds is in Gillingham and one third in Chatham, Kent, England, came into existence at the time when, following the Reformation, relations with the Catholic countries of Europe had worsened, leading to a requirement for additional...

, and launched in 1682.

In 1715, Britannia was ordered to be taken to pieces and rebuilt at Woolwich Dockyard

Woolwich Dockyard

Woolwich Dockyard was an English naval dockyard founded by King Henry VIII in 1512 to build his flagship Henri Grâce à Dieu , the largest ship of its day....

, from where she relaunched on 30 October 1719, again as a 100-gun first rate.

Britannia was placed on harbour service in 1745, and was broken up in 1749.