HMS Trial or Tryall was a 10-gun (later 14-gun) two-masted Hind-class sloop of the Royal Navy, designed by Joseph Allin and built by him at Deptford Dockyard on the Thames River, England.

The British naval blockade of France had been broken at the Battle of Toulon in February of that year, and Trial was sent to patrol the northern coastline of England for signs of French or Spanish ships.

[1] In the spring of 1745, she returned to sea under Commander Richard Barry, with orders to guard the British whaling fleet en route to Spitzbergen.

[1] Under Haldane's command, Trial took part in an unsuccessful hunt for French vessels off the Outer Hebrides, including the pursuit of two enemy men-of-war sighted near Stornoway in May.

Peace with France was declared in April, and Trial was moved from active service into three uneventful years as a convoy escort in the Mediterranean and off Nova Scotia.

[1] On arrival, a number of her crew were reported as sick or infirm and were discharged ashore in Georgia, with their care funded by a colonial government grant of £113.

Restored to service in November 1761 under Commander James Cunningham, she was assigned to cruising and patrolling in the English Channel until the declaration of peace with France in February 1763.

[1] "... the Tryal, sloop, lately taken into the dock at Deptford to be repaired, may when completed be a proper vessel for this service ..." In April 1764 Trial was recommissioned under Commander James Wallace.

[1] Despite her small size, Trial was selected in March 1768 as the Navy Board's choice for Captain James Cook's first voyage to the Pacific and subsequent circumnavigation of the Earth.