WOODEN ANCHOR FROM ROMAN TIMES FOUND IN THE DEAD SEA (Haaretz via Archaeologica News). The brief article says it may have belonged to Herod's royal yacht, but it doesn't say why they think so. There's also a picture.

UPDATE (12 January): As has been noted by various people, Arutz Sheva has a little more information in its article "Roman Anchor Found In Dead Sea".