Nine ships 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...

 have been named HMS Emerald.
was a 28-gun sixth-rate

Sixth-rate

Sixth rate was the designation used by the Royal Navy for small warships mounting between 20 and 24 nine-pounder guns on a single deck, sometimes with guns on the upper works and sometimes without.-Rating:...

, originally the French Emeraude. She was captured in 1757 by , and broken up in 1761. was a 32-gun fifth-rate

Fifth-rate

In Britain's Royal Navy during the classic age of fighting sail, a fifth rate was the penultimate class of warships in a hierarchal system of six "ratings" based on size and firepower.-Rating:...

 launched in 1762 and broken up in 1793. was a 36-gun fifth-rate launched in 1795 and broken up in 1836. was a tender purchased in 1820 and broken up in 1847. was a wood screw frigate

Frigate

A frigate is any of several types of warship, the term having been used for ships of various sizes and roles over the last few centuries.In the 17th century, the term was used for any warship built for speed and maneuverability, the description often used being "frigate-built"...

 launched in 1856 and sold in 1869. was a screw corvette

Corvette

A corvette is a small, maneuverable, lightly armed warship, originally smaller than a frigate and larger than a coastal patrol craft or fast attack craft , although many recent designs resemble frigates in size and role...

 launched in 1876 and sold in 1906.

• HMS Emerald was an armoured frigate, launched in 1861 as , renamed in 1904, and sold in 1923.
• HMS Emerald was a gunboat
  Gunboat
  A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.-History:...
  
   launched in 1869 as . She was renamed HMS Amelia in 1888, HMS Colleen in 1905, HMS Colleen Old in 1916, HMS Emerald in 1918 and HMS Cuckoo later in 1918. She was sold in 1922. was an Emerald class
  Emerald class cruiser
  The Emerald or E class was a class of two light cruisers built for the Royal Navy. Following the Cavendish Class, three ships of a new class were ordered in March 1918, towards the end of World War I, designed to emphasise high speed at the cost of other qualities, for use against rumoured new high...
  
   light cruiser
  Light cruiser
  A light cruiser is a type of small- or medium-sized warship. The term is a shortening of the phrase "light armored cruiser", describing a small ship that carried armor in the same way as an armored cruiser: a protective belt and deck...
  
  launched in 1920 and broken up in 1948.