They are quite large poles Dave, see below. But yes, when we went to New York on QM2 the harbour was fogbound to the extent you couldn't see more than a few yards plus it was still almost dark. Yet they turned the ship around and berthed her alongside the quay at Red Hook, Brooklyn with no fuss using presumably just radar and GPS. We were on deck and didn't see the quay until the ship was just a few feet away from it. Amazing really.
Colin


Edited By Colin Bishop, Website Editor on 04/03/2017 21:44:24