From John Bennett's website 21 August 2012:

21 August 2012. The familiar red and green buoys marking the entrance to the harbour (although in the wrong place due to sand movement) are now gone and have been replaced by a single, yellow and black North Cardinal Buoy. Technically, this indicates that anything south of it is dangerous - not a great welcome to the harbour! Local Notice to Mariners 10/12 has been issued by the Harbour Master.

The new buoy replaces the old port buoy.

The starboard buoy is just visible at the prow of the vessel.