Blood Tide by Robert F Jones

A deadly voyage into a world of pirates & smugglers awaits a veteran and his daughter in this adventure tale for fans of Clive Cussler & Alistair MacLean.
Unjustly blamed for a failed escape attempt from a North Vietnamese prison, James Culdee, a career U.S. Navy non-commissioned officer who has served his country with distinction for twenty years, is suddenly and unfairly forced into a disgraceful retirement. Devastated, Culdee retreats into alcoholism until he is rescued by his daughter, Miranda, a charter-boat skipper whose sloop, the Seamark, has been stolen.
When Miranda learns that the Seamark has been sighted into the dangerous and primitive Flyaway Islands of the Philippines, father and daughter sail off in pursuit, on a voyage that will carry them across the Pacific. Arriving in the Flyaways, where local pirates and drug smugglers are as treacherous as the hidden shoals and reefs, Culdee and Miranda join a band of Filipino insurgents...