In October 1808 Sylph, Lieutenant W.C. Graham, commanding, was part of a squadron that delivered Sir Harford Jones from Bombay to Persia.

While she was returning to Bombay she separated from the squadron and on the 20th encountered several dhows belonging to the Joasmi (Al Qasimi) tribe of the Arab coast of the Gulf.

[4] On 2 January 1811 HCS Ternate and Sylph (Lieutenant Hardy), sailed from Bombay to survey the coast of East Africa as far south as Zanzibar.

Sylph remained for a short time to protect the merchants of Surat from the extortionate demands of the Hakim (Viceroy) of the Sultan of Muscat.

The naval squadron captured three baghalas anchored under the protection of Fort Nuranseer at Lakhpat (Lukput) on Kori (or Khori) Creek, some 40 miles or more up from the north side of the Gulf of Kutch.

In February 1812 the army contingent, assisted by the naval squadron, captured the fort of Navanagar (or Nawangar, or Nowanuggur; now Jamnagar).