Heywood served on Queen Charlotte until March 1795, and was aboard her when the French fleet was defeated at Ushant on 1 June 1794, the occasion known as the "Glorious First of June".
In August 1794 he was promoted acting lieutenant.
In March 1795, doubts about his eligibility as a convicted mutineer for further promotion were set aside and his advancement to full lieutenant's rank was approved, despite his lacking the stated minimum of six years' service at sea.
Among those who supported the promotion was Captain Hugh Cloberry Christian, a relative of Fletcher Christian.

In January 1796, Heywood was appointed third lieutenant to HMS Fox and sailed with her to the East Indies.
He was to remain in this station for nine years.
By the end of 1796 he was Fox's first lieutenant, and remained so until mid-1798 when he transferred to HMS Suffolk.
On 17 May 1799, Heywood was given his first command, HMS Amboyna, a brig-of-war.
In August 1800, Heywood was appointed commander of a bomb ship, the Vulcan, in which he visited Coupang  where he had been held prisoner eight years earlier.
At this time  he began the hydrographic work that would mark the remainder of his naval career.
Heywood served on Queen Charlotte until March 1795, and was aboard her when the French fleet was defeated at Ushant on 1 June 1794, the occasion known as the "Glorious First of June". In August 1794 he was promoted acting lieutenant. In March 1795, doubts about his eligibility as a convicted mutineer for further promotion were set aside and his advancement to full lieutenant's rank was approved, despite his lacking the stated minimum of six years' service at sea. Among those who supported the promotion was Captain Hugh Cloberry Christian, a relative of Fletcher Christian.
In January 1796, Heywood was appointed third lieutenant to HMS Fox and sailed with her to the East Indies. He was to remain in this station for nine years. By the end of 1796 he was Fox's first lieutenant, and remained so until mid-1798 when he transferred to HMS Suffolk. On 17 May 1799, Heywood was given his first command, HMS Amboyna, a brig-of-war. In August 1800, Heywood was appointed commander of a bomb ship, the Vulcan, in which he visited Coupang  where he had been held prisoner eight years earlier. At this time  he began the hydrographic work that would mark the remainder of his naval career.
Peter Heywood