Screenshot of the radar kindly supplied by Dutch Coastguard. Click on the image for a more detailed view. The light-blue-line is the reflection of the surf along the Aardappelenbult and the beaches of Goeree.
Quote from the Navber 81/08 Vlissingen: As part of the "Natura 2000-beheerplan Voordelta" a great number of yellow buoys have been laid in front of the Zuid-Hollandse and Zeeuwse Eilanden. These buoys mark resting areas-to-be for seals and birds and an area for bottomprotection. For further information see www.noordzeeloket.nl These areas and buoys will be published in the 2009-edition of chart 1801 and trough NtM's for charts 110, 116 and 122.
Paddling in the Voordelta last Saturday we "inspected" the yellow buoys Rijkswaterstaat has laid around the closed zone of the Aardappelenbult recently. Due to weather conditions (a cloudy and drizzling day) visibility in general was limited, yet the buoys were quit easy to be seen from the cockpit of the kayak.
The Buoys around the Aardappelenbult are named "BO" which is an abbreviation for "Bollen van de Ooster" (the more official name for the sand the seakayakers call A'bult).
The legal status of the resting area is made clear on the backside of the Buoys: "Nbw 1998, art. 20". "Nbw 1998" is an abbreviation for the "Natuurbeschermingswet 1998" - the Dutch law on nature protection, "artikel 20" refers to the nature reserves with restricted acces.
The actual numbers on the buoys on the water differ from the numbers on the radar-screenshot. The marks on the radar-screen are based upon the Markeringsplan Natura 2000 gebieden Voordelta (click here - see the map on page 14). During the realisation of the "Markeringsplan" Rijkswaterstaat obviously decided to change numbers and names ("BO" instead of "BVO"). As far as we noticed, the location of the buoys is conform the screenshot and the markeringsplan: BO 16=BVO 104, BO 29 = BVO15, BO 27=BVO14, BO 25=BVO13).
The new buoys will be marked on the Nautical Charts published in early 2009. A good occasion to renew your old chart ( Hydrografische kaart 1801)!