Having trouble with sketchup import. I can't remove the collider box around it

I imported ship from sketchup using the fbx export option. It imports with textures and all but it has collider box around it and I don’t know how to remove it and add collision with the mesh only. It has multiple levels(the ship) so I need to to collide only with the solid objects. I am a complete beginner to UE4 and any help would be greatly appreciated.

Have you tried “Complex collision as simple”?