After leaving HMS Triumph, Suckling joined the Navy Board and became Controller of the Navy in 1775. The office directed the funds and material administration required to make ships available, giving it power comparable to later senior sea-lord roles. Dockyards, construction, procurement, design, maintenance, and supply all depended on the Controller turning operational requests into usable ships. His appointment shows that the service regarded him not only as a dependable captain but also as an officer capable of managing the Navy's institutional machinery.
Chapter · 48:41-51:23
Controller of the Navy placed Suckling over naval resources
Suckling's final major office made him a senior administrator responsible for spending, dockyards, construction, maintenance, and supply.