Captain James Dalrymple left the Downs on 16 April 1818, bound for China on
Cabalvas fourth journey. On 22 June,
Cabalva sprang a leak off the Cape of Good Hope and Dalrymple set course for Bombay for repairs. On 7 July
Cabalva ran ashore on the rocky uninhabited island of Cargados,
Cargados Carajos shoals. Captain Dalrymple, Assistant Surgeon Grant, and 15 seamen were the last to leave the wreck in the longboat. All were drowned when it capsized in heavy seas. The ship's cutter survived. Sixth mate Charles William Francken and a party of ten men set out on 13 July for Mauritius to get help. Although they had no navigation instruments, they arrived there on 17 July. and set out immediately, arriving at the wreck site on 20 July.
Magicienne remained on site to salvage what she could from the wreck site.
Challenger removed the survivors and landed them at Mauritius. The Court of Directors of the EIC awarded Captain John Brett Purvis of
Magicienne 200
guineas to enable him to purchase a piece of silver plate. They also awarded Charles William Francken with 50 guineas and a sextant with this inscription "Presented by UEI Company Director to Mr. Charles William Franchen late Sixth Officer of HCS Cabalva as a mark of their high approval of his conduct while in charge of the cutter he proceeded without chart or compasses from Cardagos Shoals to Mauritius to procure assistance for the surviving crew of the ill-fated ship, who wrecked on July 7, 1818." ==Postscript==