River of Smoke - Amitav Ghosh

In September 1838 a storm blows up on the Indian Ocean and the Ibis, a ship carrying a consignment of convicts and indentured laborers from Calcutta to Mauritius, is caught up in the whirlwind. When the seas settle, five men have disappeared - two lascars, two convicts and one of the passengers. Did the same storm upend the fortunes of those aboard the Anahita, an opium carrier heading towards Canton? And what fate befell those aboard the Redruth, a sturdy two-masted brig heading East out of Cornwall?