By the late 1730s hostilities appeared imminent between Britain and Spain and the British Admiralty had concerns regarding the security of settlements along the Carolina and Georgia coasts. On 11 June 1739 Admiralty orders were issued for a six-vessel squadron, including
Flamborough, to "protect the said settlements ... by taking, burning or otherwise destroying the ships, vessels or boats which the Spaniards may employ thereon."
Flamborough thereupon left her New York station for the Carolinas, arriving ahead of the declaration of
war with Spain in October. , 1740 Her first wartime service was in May 1740 when she anchored in the mouth of the
St Johns River to protect the disembarkation of British troops assigned to the
Siege of St. Augustine. In 1742 she came under the command of Captain
Joseph Hamar, with orders to patrol between Georgia and the Bahamas. In June she briefly engaged Spanish vessels near
St. Augustine, Florida, driving several enemy vessels aground before being forced to retreat towards
St. Simons Island. The engagement cost
Flamborough seventeen of her crew. Returning in August she was part of a five-vessel squadron under the overall command of
Sir Thomas Frankland, assigned to lure the Spanish into battle off St. Augustine, but was never directly engaged. In October she returned to British waters off the Carolinas, anchoring off
Hobcaw alongside . While in Hobcaw she lost three men to desertion, replacing them with seamen impressed from local merchant craft. Hamar was transferred to the command of her eventual replacement, the 40-gun which arrived in Charleston harbour on 10 July 1747. On arrival in England
Flamborough was relocated to
Woolwich Dockyard for major repairs. Works began in January 1746 and lasted for five months at a cost of £4,624. She was recommissioned in April 1746 under Captain Jervis Porter and put back to sea in May for cruising and patrol along the English coast. Throughout 1747 she engaged and captured five French privateers –
Le Chasseur in June,
Le Roi David and
Le Louis Quinzième in July, ''L'Alexandre
in October and Le Ricaud'' in December. == Decommission ==