I'd missed these comments, vfb, so sorry for the long delay in reply: With regard to locmasks, I must rely on information provided by other parties. I can go over the data provided by EricM for patch 3.15 and check the locmasks, because they may have been changed for those sea sites. I only checked the ones in the shortlist and some others, so there may be some errors left over.
The DB is generally accurate, but it is NOT infallible.
Not yet anyway...
