Not for iPhone!
I sail Alamitos Bay in Long Beach, CA. Although I have Anchorages layer OFF, the chart still indicates all anchorages. So many are shown that they overlap and are unreadable. On my iPhone 6 Plus, the chart is useless. Tech support claims that the anchorages are the names of the water areas and will show even with the Anchorages layer turned OFF. $30 bucks out the window, as far as Im concerned.
Brian TF about SeaNav US