This book has been released under the following alternate titles:-
Spread of Sail
A treasure ship, the Marie Galante, has been lost somewhere in the Amirantes; Kelso is ordered to locate the wreck and recover the quarter of a million pounds treasure. His mission, which was to have been secret, becomes common knowledge along the Bombay waterfront and beyond, so that when Paragon sails she finds La Mouette, captained by the notorious pirate Lamont, and ships of his Angrian allies in pursuit.