[maxglute]

Thanks, I've "enjoyed" nautical charts before, not for use, but the design. I just like seeing different kinds of maps/schematics and seeing their symbology or notation. Want to see something for submersible navigation, I imagine it's mostly countrs and depth indicators, but what about stuff like currents, thermocline layers, landmarks... like is there a big geologic underwater arch somewhere that subs pass under for shits and giggles. What do charts show subs that operate at 500m or vehicles designed to deeper. Things like that.

[QuarterReptile]

What you're looking at there would suffice as source material whether your keel depth is 30ft or 300, and then many layers of planning happen atop it.

> like is there a big geologic underwater arch somewhere that subs pass under for shits and giggles.

I can't promise there's not, but most naval services have proud traditions of firing captains who are involved in collisions, allisions, and groundings.