[LonePalm]

Of course they do. They do vary slightly from civilian marks.

For those not familiar with plimsoll lines they correct for water density differences based on salinity and temperature and how they affect ship's draft.

Here is an example.

WWG1WGA

Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)

[smileyface]

Interesting. So for a big tanker or cargo ship, what is the difference of those ratios, in feet?