[Flak]

To clone ship or to make new one (that's just cloning with resizing, adding or deleting parts of Ship) you need to make folder with ship name in 3DO/Ships folder, for Tanker0 that would be 3DO/Ships/Tanker0. As you are making tanker than it would be logical to use existing tanker as base so you should copy your extracted Tanker SFS files into 3DO/Ship folder.

So you will have two folders there 3DO/Ships/Tanker0, that one is empty and 3DO/Ships/Tanker with original tanker files.

I did it.

In addition you will have to make changes in 2 or 3 other files depending on armament of the ship.
These files are Ships.ini, Chief.ini and Technics.ini . Technics.ini is not necessary if there is no guns on ship.

I did it.

When this is finished and you are satisfied with your ship, move content of 3DO/Ships/Tanker to 3DO/Ships/Tanker0. You will now have your Tanker0 visible in FMB but you will not have it in mission, that's what I have to do.

I did it.

But my "new" ship (tanker0) was an exactly copy off tanker (Liquid Carrier). I changed the skins and modified the hier.him but nothing was change.

I think that the sim don