Yes, you can use National Parks mooring balls for diving. The color code is: Orange - non-diving use Yellow - commercial dive boats only White - non-commercial diving Blue - dinghies only
The balls at the Rhône change color frequently. Do try and avoid the yellow balls but any of the Orange balls are fine to dive the wreck. Do a current check before putting divers in the water. Usually it’s fine but it can be not suitable for diving at times.
We were there this morning and there were no other boats in sight. Picked up a yellow ball just because it was closer, but they are clearly marked for commercial dive boats.
There are about 8 yellow buoys and a similar number of red park buoys, plus a dinghy line.
The red buoys are a bit farther away, but not that much.
Conditions were spectacular for free diving the wreck and nearby shore.
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