Each Waterguard station was issued with a Manby mortar, which had been invented by Captain George William Manby in 1808. The mortar fired a shot with a line attached from the shore to the wrecked ship and was used for many years. This began the process through which the Coastguard assumed a life saving role. In 1821 a committee of inquiry recommended that responsibility for the Preventative Waterguard be transferred to the Board of Customs. The Treasury agreed and (in a memorandum dated 15 January 1822) directed that the preventative services, which consisted of the Preventative Water Guard, cruisers, and riding officers should be placed under the authority of the Board of Customs and in future should be named the "Coastguard". In 1845 the Coastguard was subordinated to the Admiralty.