Ships are built in shipyards, most often on dry docks that are slightly sloping towards the water surface. On such docks, there are rails on which the ship is built, and after the completion of construction, the ship slides on the rails and descends into the water.
In many shipyards there are also dry docks where the ship does not sink into the water. The docks are buried in the sea and separated from the outside by a special watertight door. In such a dock, a ship is built on dry ground, and after the construction is completed, the water that lifts the ship off the ground is released. The moment the ship sails, the stops open and the ship sails.
Small ships, smaller yachts and boats are built on dry ground, and after construction they are taken to the water by cranes or special vehicles and lowered into the water.
In this way, large ships could be built, and for that it would be necessary to build special vehicles on which the ship would be built, and which after construction would take the ship to the water surface.
Such large vehicles that would serve both as construction docks and for transport to the water surface would have to be able to be disassembled into component parts, and reassembled when necessary.
The basic element of such large docks would be smaller autonomous vehicles shown in Fig. 1. and Fig. 2. Such a vehicle would have a solid flat top plate (1) standing on a supporting pillar (2) that can be rotated left and right by an electric motor. Through the bottom of this support column (2) passes the wheel axle (3) on which there are 4 wide wheels (4). Inside the support column there is a strong spring that serves as a shock absorber when driving such an autonomous vehicle. On the side of this vehicle there are handles (5) which are used to connect with other identical autonomous vehicles. At the front and rear of this autonomous vehicle there are movable supports (6) that can be remotely moved up and down by an electric motor.
Such an autonomous vehicle, 4 meters wide and 10 meters long, could move independently on the roads as a vehicle for special heavy loads, and would most often be used in ports and large warehouses.
The vehicle would be powered by electric motors located inside each wheel, and energy would be obtained in three ways. One way is the batteries located under the top plate, the other way is the diesel or gas generator located below the top plate (1), and the third way is the power supply with long cables connected to the mains. The vehicle could be operated by an autonomous computer system when moving around the storage area, either remotely with the help of a driver standing on the vehicle, or next to it nearby.
When a large number of such vehicles are interconnected by handles (5) then they turn into a much larger vehicle shown in Fig. 3. Such a vehicle consisting of the 20 described autonomous vehicles would be 80 meters long and 10 meters wide. A large ship could be built on it and transported to a nearby body of water. When starting construction, small hand cranes should be placed under all wheel axles (3) on all connected autonomous vehicles, which would lift all wheels (4) above the ground so that they would not be deformed during the construction of the ship. During the construction, the movable supports (6) would support the ship from the side so that it would not capsize during construction and transport.
Upon completion of the construction of the ship, the small hand cranes under the wheel axles would be released, and the weight of the entire platform along with the ship would be transferred to the wheels. Then the platform would turn into a large externally operated vehicle. All wheels would be controlled by computer, and the vehicle would move towards the nearby water surface. A concrete, asphalt or macadam road could have a very small drop, the width of the road should be at least 10 meters, and there should be no overpasses, power lines or any other installations above it. That road would have to be extended below the water surface to the depth at which the ship would start sailing, and thus separate from the platform on which it is located. When the ship sails, this platform composed of a large number of autonomous vehicles would return to the dry part of the road, and would turn where it started from. It could then serve as a dock to build a new ship, or it could be disassembled into component autonomous vehicles to work in a warehouse, or port.
Some of my other innovations can be seen in this book.