sentences:  Later, he also charted some coralline archipelagoes of the Indian Ocean, such as the Maldives, Laccadives and Chagos in the 1820s and '30s.This work ensured that the route from Europe to the East Indies became viable for the new steam vessels.Robert Moresby was a son of Mr Fairfax Moresby of Lichfield, Staffs, late of India, where Fairfax Moresby had practised as a lawyer.