Peel Ports advise that the floating dock/converted barge Westmoreland, that has been moored between two large yellow mooring buoys to the north of the Lower Halstow Yacht Club moorings, has sunk. It is still made fast to the two yellow marker buoys fore and aft but is covered at high water. The centre of the barge between the two yellow buoys is marked by floating pellet buoys. Mariners should navigate with caution due to this submerged danger to navigation. Approximate position 51 23.00N 000 40.60E. The owner is aware and will be dealing with the situation.