HMS Undaunted was an Arethusa-class

Arethusa class cruiser (1913)

The Arethusa-class cruisers were a class of eight oil-fired light cruisers of the Royal Navy all ordered in September 1912, primarily for service in the North Sea. They had three funnels with the middle one somewhat larger in diameter than the others. All served in World War I...

 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...

 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...

 launched on 28 April 1914 at Fairfield Shipbuilding and Engineering Company

Fairfield Shipbuilding and Engineering Company

The Fairfield Shipbuilding and Engineering Company, Limited was a British shipbuilding company in the Govan area on the Clyde in Glasgow. Fairfields, as it is often known, was a major warship builder, turning out many vessels for the Royal Navy and other navies through the First World War and the...

's shipyard at Govan

Govan

Govan is a district and former burgh now part of southwest City of Glasgow, Scotland. It is situated west of Glasgow city centre, on the south bank of the River Clyde, opposite the mouth of the River Kelvin and the district of Partick....

.

Undaunted participated in numerous naval operations during the First World War. On commissioning she was assigned as the leader of the 3rd Destroyer Flotilla of the Harwich Force

Harwich Force

The Harwich Force was a squadron of the Royal Navy, formed during the First World War, that went on to play a significant role in the war.-History:...

, guarding the eastern approaches to the English Channel

English Channel

The English Channel , often referred to simply as the Channel, is an arm of the Atlantic Ocean that separates southern England from northern France, and joins the North Sea to the Atlantic. It is about long and varies in width from at its widest to in the Strait of Dover...

. On 28 August 1914 Undaunted took part in the Battle of Heligoland Bight, and on 17 October 1914 she was involved in an action off the Dutch island of Texel

Battle off Texel

The Battle off Texel, also known as the Action off Texel or the Action of 17 October 1914, was a naval battle off the coast of the Dutch island of Texel during the First World War where a British squadron consisting of one light cruiser and four destroyers on a routine patrol encountered the...

 with German torpedo boats resulting in the complete annihilation of the German Seventh Half-Flotilla of torpedoboats.
On the 25 December 1914 she took part in the Cuxhaven Raid

Cuxhaven Raid

The Cuxhaven Raid was a British ship-based air-raid on the German naval forces at Cuxhaven mounted on Christmas Day, 1914.Aircraft of the Royal Naval Air Service were carried to within striking distance by seaplane tenders of the Royal Navy, supported by both surface ships and submarines...

, and on 24 January 1915 she took part in the Battle of Dogger Bank

Battle of Dogger Bank (1915)

The Battle of Dogger Bank was a naval battle fought near the Dogger Bank in the North Sea on 24 January 1915, during the First World War, between squadrons of the British Grand Fleet and the German High Seas Fleet....

.

In April 1915 Undaunted was damaged in collision with the destroyer

Destroyer

In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

 HMS Landrail, and on 24 March 1916 she was again damaged in a collision, this time with the cruiser HMS Cleopatra

HMS Cleopatra (1915)

HMS Cleopatra was a C-class light cruiser of the Royal Navy. She was part of the Caroline group of the C-class of cruisers.She was laid down in February 1914, launched 14 January 1915 and commissioned into the navy in June 1915. On the outbreak of war she was assigned to the 5th Light Cruiser...

. In 1917 she was appointed as leader of the 10th Destroyer Flotilla of the Harwich Force, and in November 1918 was reassigned to the 4th Light Cruiser Squadron of the Grand Fleet.

She survived to see the end of the First World War, and was sold for scrapping on 9 April 1923 to Cashmore

John Cashmore Ltd

John Cashmore Ltd was a company based at Newport, Monmouthshire, Wales...

, of Newport.