Gaborian was commissioned lieutenant on 4 January 1759, and in this capacity commanded the cutter Folkestone 6 during 1769-70.
During the early years of the American Revolutionary War he was active in the Channel with the cutter Sherbourne 6, which he had joined in 1775. In the summer of 1777 he was despatched by Vice-Admiral Lord Shuldham at Plymouth to hunt down a troublesome American privateer, the Montgomery. On 16 June, having disguised his cutter as a smuggling vessel which had been pursued into the port of Cherbourg, he found the privateer captain to be the worse for wear through drink and made him prisoner after tricking him into coming aboard. Such was the outcry at his subterfuge that the American commissioners to the court in Paris, Benjamin Franklin and Silas Deane, complained to the French foreign minister. Gaborian was nevertheless soon rewarded for his ingenuity by being promoted commander on 17 September.
He was further promoted by being posted captain on 13 May 1778 on the occasion of the Kings review of the fleet that month, and he joined the Amphitrite 24 in the Downs where he took several prizes. He later commanded this vessel in the Channel fleet retreat of August 1779 before leaving her in 1780, and he was not thereafter employed.
Gaborian died some time about 1795, his last address being given as Saltash, Cornwall.