HMS Dido was the name ship of her class

Dido class cruiser

The Dido class was a class of sixteen light cruisers built for the Royal Navy. The design was influenced by the Arethusa class light cruisers. The first group of three ships was commissioned in 1940, the second group and third group were commissioned in 1941–1942...

 of light cruisers for 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...

. She was built by Cammell Laird Shipyard (Birkenhead

Birkenhead

Birkenhead is a town within the Metropolitan Borough of Wirral in Merseyside, England. It is on the Wirral Peninsula, along the west bank of the River Mersey, opposite the city of Liverpool...

, UK), with the keel being laid down on 26 October 1937. She was launched on 18 July 1939 and commissioned on 30 September 1940.

Mediterranean

On 18 August 1942 Captain H. W. U. McCall brought Dido to Massawa

Massawa

Massawa, also known as Mitsiwa Massawa, also known as Mitsiwa Massawa, also known as Mitsiwa (Ge'ez ምጽዋዕ , formerly ባጽዕ is a city on the Red Sea coast of Eritrea. An important port for many centuries, it was ruled by a succession of polities, including the Axumite Empire, the Umayyad Caliphate,...

for major repairs to a bomb-damaged stern. Because Dido was at that time one-quarter of British surface power in the Eastern Mediterranean it was critical that she be repaired as quickly as possible. The only working drydock in Massawa wasn't large enough to lift Dido entirely so she was partially floated up to clear the stern, leaving the bow low in the water. Six days later Dido was undocked to return to battle alongside her three sister ships, Euryalus, Cleopatra and Sirius.