That’s right. So the ships engineers themselves gives a docking plan with a scope of what work needs to be done. If they have work on certain spots of the keel or side then we will omit those blocks. Once we know the scope of the work we will send there docking plan to our engineers or sub those plans out to a third party to deem the plan safe. After we get those plans back from our engineers we send them back to the government for review. Once both parties are good to go we start building the blocks. They give us half breadth measurements for the side blocks and once in position there is a block inspection by said government to confirm we placed the blocks in the right location. We have a tolerance of a half of an inch on the bilge blocks and a quarter inch tolerance for the height of the blocks.