Mariners are advised that a dredging spud has been lost in the Christiana River in the vicinity of the Port of Wilmington. Approximate location is between 39-37.800N 075-34.400W and 39.073N and 075-31.020W and is marked with yellow buoys. The spud is approximately 55 ft. in length and 3 ft. in diameter. Mariners should use extreme caution when transiting the area.