I have some(slightly janky) drivable ships I've made that are in multiple parts. If you want, I can send you the source files and give you some pointers on how I got it working. They're all fully walkable.

that would be great, being able to assemble them would be fine for me, that moving would be a plus
discord loro_cdm#0011

I don't have discord, would adding you on steam be okay?

My A2 method was to use a script to attachto sections to a non visual boast hull, sadly this does not work in A3 dues to how attachto changes geo etc of the attached objects. Investigating myself how it can be done in A3, static should be a matter of a script type but I will need to investigate more.

I now know how A3 does it...(Thanks to help from an old teammate from the FLK team), Will try to do a guide

I have been guided on the BIS method, its relatively easy, am going to try and do a guide for it.

got a simple example (part of a ship I have been working on) with explanation, just need to work out how to share it!

the concept is all here.. https://community.bistudio.com/wiki/BIS_fnc_Destroyer01Init

Starting from the example that Vurtual gave me, I could understand what I was doing wrong with the BIS method, and finally I could assemble them correctly, I can walk on it, the roadway works well, however I cannot make the physics work, I can cross walls, and although when putting a vehicle it recognizes and hooks to the surface, then it falls into the sea

https://www.dropbox.com/s/s4jtnjqjyoujwrm/Multi_Learn.zip?dl=0 this MIGHT work !!