So this is about how to get a working/ drivable capital ship in halo 5 forge.
First select the map you want to build it on and decide what ship you want to build (it can’t be too big or detailed, a UNSC frigate works well for this). Then create a floor out of vehicle blockers which covers the entire map. When this is done you spawn a scorpion (or what ever you want, scorpions work better because when the ship moves the people inside won’t die being flung against the wall like a banshee would).
Place the scorpion somewhere in the ship like this;
.Somewhere where the weight of the ship can be distributed eventually around the scorpion
.If you have a hanger for fighters or vehicles make sure the scorpion is always bellow that hanger so the fighters and vehicles are not blocked by the vehicle blocker floor you just made.
You then weld the entire ship (not including vehicles, and turrets) to the scorpion and commence the vehicle welding glitch.
If you don’t know the glitch it is simply this;
Create a ship and turn the entire thing into one big group (not including vehicles or turrets) you then select the vehicle you want to weld it to (scorpion) and change its properties (respawn time 20 seconds). After this you first select the group you just made (the ship) and then select the vehicle (scorpion) you then create those two into a group. When this is done you destroy the scorpion. When the main body of the destroyed scorpion despawns you quickly select the ship and select weld. When the scorpion respawns it should be welded to the ship. To drive the ship you simply go on the properties of the ship and make sure the vehicle is the parent object, and then you simply turn the physics of the ship to normal.
This is where the vehicles blocker floor comes in, if you are on a space map you can put it at the bottom of the map. You then place you new derivable ship on top of that blocker and there you have it. You can drive you capital ship around the map. The scorpion is excellent for this because when driving, objects and people inside the ship are not slung against the walls. If you want to add turrets to your ship after you have welded it to the scorpion then go ahead, just make sure not to weld them or make them part of the ship. Simply place them on the ship and they won’t fall over when it drives, same goes for banshees and wasps etc.