The Mauritius Command

Captain Jack Aubrey is ashore on half-pay without a command - until his friend, and occasional intelligence agent, Stephen Maturin, arrives with secret orders for Aubrey to take a frigate to the Cape of Good Hope, under a Commodore's pennant. But the difficulties of carrying out his orders are compounded by two of his own captains - Lord Clonfert, a pleasure-seeking dilettante, and Captain Corbett, whose severity can push his crews to the verge of mutiny.