Navionics question

[Malc]

Looking at navi Web app and I see abbreviations such as S, M and R and that's easy enough, sand mud and rock. However I am confused with two locations one is MS.G.SH and the other M.S.G/R (mud sand gravel/rock perhaps)?

[Saintly Fish]

Think you've answered your own question Malc! 

[Andy135]

On the Navionics web app you can click the letters, then click the blue ? icon to the right of the cross-hairs, then expand the Seabed Area line to reveal the details. It won't give a full description of each of the words in the abbreviation, but will list the major component.

[Saintly Fish]

6 minutes ago, JonC said:

It’s not a listed abbreviation though? 

Which one?

[Andy135]

5 minutes ago, JonC said:

But if you piece the description together from this list you get:

MS.G.SH = Mud sand (Muddy sand?), Gravel, Shell.

[GPSguru]

4 hours ago, Malc said:

Looking at navi Web app and I see abbreviations such as S, M and R and that's easy enough, sand mud and rock. However I am confused with two locations one is MS.G.SH and the other M.S.G/R (mud sand gravel/rock perhaps)?

 

You need Chart 5011, which is the full list of annotations and abbreviation used on admiralty charts.

The PDF is too large to attach here, the sea bed abbreviations start on page 25, and the pdf is available for download here,

Chart 5011 8th Edition

[Malc]

16 hours ago, Andy135 said:

On the Navionics web app you can click the letters, then click the blue ? icon to the right of the cross-hairs, then expand the Seabed Area line to reveal the details. It won't give a full description of each of the words in the abbreviation, but will list the major component.

I did that, however I was using our tablet and I now realise I haven't logged in on it 🤪