Bones of the Dragon. Margaret Weis and Tracy Hickman (Dragonships of Vindras)

In Bones of the Dragon, Skylan Ivorson is a sea-raider of the Vindras, an undefeated champion of the Torgun clan, and eventually the Chief of Chiefs of all Vindras clans, an honor he truly feels he deserves as one who has been blessed by Skoval, the god of war. But sometimes a blessing is a curse in disguise.

Skoval and the other ancient gods are under siege from a new
generation of gods who are challenging them for the powers of
creation.... and the only way to stop these brash interlopers lies within the mysterious and hidden Five Bones of the Vektan Dragons.

It will be up to the Vindras, the dragon-goddess s champion, to undertake the quest to recover all Five. The fate of the Old Gods and the Vindras people rests on their recovery, for this is not only a quest to save the world it is also a quest for redemption.

Filled with heroes and heroines young and old (as well as human and non) spanning locales of exotic adventure in a magic-forged world, the Dragonships of Vindras series fully illustrates the mastery of world-building and storytelling that has made Weis and Hickman into the bestselling fantasy co-authors of all time.