The ship is made of blocks (mouse clicks) which are pinned on the green frame (position and angle). The green frame has a car behavior for moving. Because blocks can be destroyed and because of the torque i have to get the middle of the ship. Another solution is to pick the middle block of the ship. Then i could set the frame to it.
Maybe pick the highest and lowest X and Y /2 from the block instances. But I dont know how to do that.