Goddess Tithe by Anne Elizabeth Stengl

Description:
The Vengeful Goddess Demands Her Tithe
When a stowaway is discovered aboard the merchant ship Kulap Kanya, Munny, a cabin boy on his first voyage, knows what must be done. All stowaways are sacrificed to Risafeth, the evil goddess of the sea. Such is her right, and the Kulap Kanya’s only hope to return safely home.
Yet, to the horror of his crew, Captain Sunan vows to protect the stowaway, a foreigner in clown’s garb. A curse falls upon the ship and all who sail with her, for Risafeth will stop at nothing to claim her tithe. 
Will Munny find the courage to trust his captain and to protect the strange clown who has become his friend?