Watch Officer - h.sie fix
 

I have seen and have experience the no W.O. on deck when you surface from a dive and you have to manually put him there. There is a patch from h.sie that fixes this issue (v16B1).

What I want to know is ......Do I need to installed this to the vanilla game before I ad GWX3? or does it matter?

Do I even need this patch? Is there a JSGME mod for it?

I really like what the patch allows and fixes but on my last install something kept interefering with SHIII/GWX3 and all GWX mods install. The game would just crash and return to my desktop. So i deleted all SHIII files and started over. So far all I have installed is teh original game

There is very exact infomation on how to install it in the readme file of the patch.
Any way , you need a clean install of SH3 patched to 1.4B , install GWX3 and then H.sie's fix. (No , it can't be done with JSGME)
Be sure to follow the instructions to the letter.
Good luck.

After you install the fix you can choose which part of it to activate or not.