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Three ships of the Royal Navy have been named HMS Implacable:

• The first Implacable, launched in 1795 as the French ship Duguay-Trouin, was a 74-gun third-rate ship of the line. Captured by the British on 3 November 1805, she was renamed Implacable. She was scuttled in 1949, by then the second oldest ship of the Navy (after Victory).
• The second Implacable, launched in 1899, was a Formidable-class battleship. She served in World War I and fought at the Dardanelles. She was sold for scrapping in 1921.
• The third Implacable (R86), launched in 1942, was the lead ship of her class of aircraft carriers. She served in World War II and was broken up in 1954.

References

• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham. ISBN 978-1-86176-281-8. OCLC 67375475. 

This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.