HMS Formidable, the third of four ships of that name to serve in the Royal Navy, was the lead ship of her class of pre-dreadnought battleships. The ship was laid down in March 1898, was launched in November that year, and was completed in September 1901. Formidable served initially with the Mediterranean Fleet, transferring to the Channel Fleet in 1908. In 1912, she was assigned to the 5th Battle Squadron, which was stationed at Nore.