This are screenshots from the SH4 MISSIONS EDITOR:
You see ships and Aircraft
And the ships are working.
For having this working, it just costs me 682 Roster files entries. It is not a rip of GWX or LSH3 but is borrowed from the ******* Addon-CD, which is a collection of stolen mods by this and other modder communities. I am sorried I can't give you the name of its real developer.
When you ask yourself wether I picked this layers, I just can tell you that there is harbour traffic without tons of new ships.
I just can tell you it is nice to see living german and french harbours and convoys in THE place for U-boats
