Mecklenburgh was one of thirty cutters purchased by the Royal Navy in a three-month period from December 1762 to February 1763, for coastal duties off English ports.[1] The function of these purchased cutters included convoy and patrol, the carrying of messages between Naval vessels in port and assisting the press gang in the interception of merchant craft.[2]
Admiralty Orders for her purchase were issued on 29 December 1762, and the transaction was completed on 4 February 1763 at a cost of £400.[1] She was a small craft, single-masted and with an overall length of 54feet including bowsprit, a 48feet keel, and measuring 82 tons burthen. Her beam was 19feet. Admiralty records indicate she was French-built and had been at sea as a merchant vessel since 1758.[1]
On 12 February 1763 the newly purchased cutter was sailed to Sheerness Dockyard for fitting out as a Navy craft. Works ran for four months until 26 June, at a total cost of £994.[1] Her merchant armament of eight three-pounder cannons was reduced to six, supported by ten -pounder swivel guns for anti-personnel use.[1]
As rebuilt for Navy service, Mecklenburgh had a complement of 30 crew.[1]
War with France ended on 10 February 1763, after Mecklenburghs purchase but before completion of her fitout or assembling of her crew. Despite this, commissioning went ahead in April 1763 and the vessel entered the Navy as a patrol cutter off the Sussex coast. Her first commander was Lieutenant Henry I'Anson, formerly 1st lieutenant of, subsequently commander of the first,[3] [4] who served aboard Mecklenburgh until 1765. In 1766 command passed to Lieutenant Thomas Parke, and in 1769 to Lieutenant William Hills.[1]
Mecklenburgh was declared surplus to navy requirements in 1773 and was sailed to Sheerness Dockyard for partial dismantling. The stripped-down hull of the vessel was then towed into the harbour and sunk as part of a breakwater.[1]