Sorry for the kind of late answer

Well, it's no shame to circle for an anchorage... everybody did it.
But it is very interesting for others where You finally found Your place
Since last week You can conveniently "tag" places on Your track.

Magnalox currently is not supporting depth sounding, but I thought about offering it in the past. It's database is prepared for it, eg heartrates can be displayed.
If there is enough demand, I'll implement it.

I'm explicitly excluding liabilities by stateing that the data can be wrong or inaccurate and is not suitable for navigational purposes.
And the postings are anonymous, so I don't expect trouble here.

Have fun