3d Vector Sea Maps

[alejandroh]

A GPX layer? I have check but can't find the standart to define them. Do you know any link where I can find this info? Thanks!!

[nohal]

GPX 1.1 Schema Documentation
Just create waypoints named with the depth. Export a GPX file from OpenCPN to get an idea about the extensions we use for visibility etc.
Then place the file into the Layers directory. (Layers | Official OpenCPN Homepage)
Be aware that this is not an ideal solution and having more than thousands of waypoints is a bit slow, especially if you are not using the 3.3 beta of OpenCPN...

Pavel