These worms are only a short ride north. Perhaps under an hour. [ He's guessing from the time it takes for squads to rotate out with wounded and return. He swam most of the way here, and that is not a true estimate of time judgement. ]

Thranduil and Sgt. Grimm are handling things back at the castle, they will have a better estimate and be able to direct you where needed, should you wish to assist.