VicS
Well-known member
Restricted in ability to manoeuvre applies to vessels which "due to the nature of their work" are unable to manoeuvre as required by the rules and are therefore unable to keep out of the way of another vessel. There is a list of examples contained in the colregs. This is not a RIAM situation. If anything the vessel could be be treated as a vessel under tow, but the tug was almost certainly there as steering assistance and security / safety - not towage.
CC
I think if you were to read the Southampton Harbour Byelaws you will find that the ship should have been displaying a cylinder!