From the Publisher:
Frozen inside a million-ton mass of ice - the charred remains of a long-missing luxury yacht, vanished en route to a secret White House rendezvous. The only clue to the ship's priceless - and missing - cargo: nine ornately carved rings and the horribly burned bodies of its crew.
Clive Cussler: Iceberg. Berkley Publishing Group, ISBN: 0425197387 (March, 2004), 352 p., $7.99