What's the point of landing on a ship?

Because the ship is docked against the current, it can use the resistance of the current to the hull to play a part of the "braking" role. Ship berthing mainly depends on the pressure of current, which will push the ship to the dark side. Smooth water flow will increase the driving intensity, reduce the chance of slow docking, and make it difficult for the ship to dock. Against the current, on the other hand, it can reduce the driving force and let the ship dock automatically without reducing the exercise.

The speed of the ship is 8 kilometers per hour and the speed of the current is 2 kilometers per hour, so the actual speed of the ship downstream is 10 kilometers per hour. At this time, if you dock directly downstream, even if you turn off the motor, it is difficult to stop the ship because of the speed and inertia of the water flow. Once you drive too far, you have to start over.

Therefore, when a big ship coming down the river stops at the dock, it must make a big circle, change the direction of the bow and sail against the direction of the current, so as to stop at the dock smoothly and safely.

Ships have contributed to the change of human life and led to the interdependence of all countries in the world, which human beings never dreamed of before. Today, modern ships, including passenger ships, cargo ships and oil tankers, are engaged in various global commercial shipping related to human destiny.