Ship of Spells by H. Leighton Dickson

A war-scarred mage. A sentient ship. A secret that could drown empires.

When Ensign Bluemage Honor Renn is rescued from the wreckage of her first naval post, she expects death or disgrace. Instead, she wakes aboard the Touchstone, a mythic vessel whispered of in dockside ballads and royal war rooms alike. With a crew of misfits. A mysterious, elven captain. And a mission tied to the Dreadwall, the crumbling barrier that has kept the Overland and Nethersea from open war for a hundred years.

But the tragedy that sank her last ship didn’t just take lives―it left something behind.

Now Renn carries a secret everyone wants. A magik that’s chimeric, arcane...and slowly killing her. But the captain’s mission may be her only chance to survive, even if he still doesn’t trust her.

Caught between privateers, princes, and spies, Renn knows each choice could sink her future―or set the sea on fire.