Alum bay

[C08]

Anchored there recently and there are differences between the Imray chart that shows nothing in the bay itself, my Garmin plotter that shows long rock and a area drying 1m and the reeds noting the east end of long rock drying 0.9m. Some differences but at low water on a biggish spring tide there was nothing to be seen? So what is the reality?

 

[VicS]

Anchored there recently and there are differences between the Imray chart that shows nothing in the bay itself, my Garmin plotter that shows long rock and a area drying 1m and the reeds noting the east end of long rock drying 0.9m. Some differences but at low water on a biggish spring tide there was nothing to be seen? So what is the reality?

A rock drying 0.3m east of The long rock