Katherine Johnson’s first novel, Pescador’s Wake, is a well-paced account of the pursuit of a Uruguayan vessel that has been fishing illegally for Patagonian toothfish in Australian territorial waters south of Heard Island. What follows is a stern chase. The Pescador is followed across thousands of nautical miles by another fishing boat, the Australis (from Hobart), which for six months of the year is chartered by the Australian Maritime Safety Authority to deter fish poachers. Johnson’s narrative cuts between action on the two vessels, hauling gales in waters near Antarctica, and more muted domestic dramas in Uruguay and Australia.