Sea Witch by Helen Hollick
From the age of fifteen Jesamiah Acorne has been a pirate with only two loves – his ship and his freedom. But his life is to change when he and his crewmates unsuccessfully attack a merchant ship off the coast of South Africa. He is to meet Tiola Oldstagh an insignificant girl, or so he assumes – until she rescues him from a vicious attack, and almost certain death, by pirate hunters. And then he discovers what she really is; a healer, a midwife – and a white witch.
When the call of the sea and an opportunity to commandeer a beautiful ship – the Sea Witch – is put in Jesamiah’s path, he must make a choice between his life as a pirate or his love for Tiola. He wants both – but his enemies want him dead.