HMS Thunderer was an Orion Class Dreadnought Battleship, built at Thames Ironworks and Shipbuilding Company, Poplar London.

Unofficial, as this badge pre dates the Admiralty standardisation of Royal Navy badges in 1919. HMS Thunderer spent the bulk of her career assigned to the Home and Grand Fleets. She participated in the Battle of Jutland and the inconclusive Action of 19th August. During WW1, HMS Thunderer routinely patrolled and joined training in the North SeaIn 1921 she was converted into a training ship for naval cadets until she was sold for scrap in 1926.

Whilst being towed to the scrapyard HMS Thunderer ran aground, she was re-floated and then broken up.

To Note: This Royal Navy wardroom badge came from the famous Ferrers Walker collection. Mr Ferrers Walker spent a lifetime collecting the largest and most significant WW1 and WW2 Naval history artefacts. He gave his collection to Portsmouth Naval Museum to exhibit.