Sea Swept

Sea Swept is the first book of four in the Chesapeake Bay novel series. Originally published in 1998.
Plot summary.
Cameron Quinn is a champion boat racer who travels the world and enjoys a lifestyle soaked in champagne and women. As a child, Cameron survived abuse before he was adopted by the Quinns after they caught him almost stealing their car. Now Cameron is called back to his childhood hometown of St. Christopher's on the Chesapeake Bay, his father dying from a car accident. He has to leave his reckless life of a daredevil behind and fulfill his father's wishes for him to take care of Seth, a troubled young boy who isn't unlike Cameron once was. Like Cameron and his two brothers - Ethan and Phillip - Seth was adopted by Raymond Quinn in a difficult period of his life.
Cameron has to learn to live with his brothers once again, which isn't easy for three powerful men well accustomed to their own lives. Soon the blossoming Boats by Quinn unites the four Quinns in a craft taught to them by Ray. Problems arise as it becomes apparent that Seth's fate lies in the hands of a beautiful social worker, Anna Spinelli, and while the brothers fight for the right to adopt, Cameron soon finds himself drawn to the warm, driven social worker. While at first speculative, Anna quickly sees that these three men whose murky pasts mirror Seth's are the best caretakers for the spooky, haunted boy. Her immediate attraction to Cameron, while unwelcome, isn't something she can ignore. Meanwhile, Cameron struggles to move past the rhythm of life he was forced to sacrifice and earn the trust of a battered young boy whose story has yet to be told.