ISBN: | 978-5-5105-3254-8 |
High Quality Content by WIKIPEDIA articles! HMS Indefatigable was a battlecruiser of the Royal Navy and the lead ship of her class. Her keel was laid down in 1909 and she was commissioned in 1911. She was an enlarged version of the earlier Invincible class with a revised protection scheme and additional length amidships to allow her two middle turrets to fire on either broadside.