The laws that the navy must abide by in marching are: headwind and countercurrent, downstream and inverse area; The most taboo is smooth sailing, smooth sailing. Although the warship is galloping forward, there is no retreat and the route is single. If the guns on the ship can't exert their power, they will be defeated. Going against the current, the progress is a bit slow, but the initiative in direction, rhythm and formation is in my hands, and the power of naval guns can be fully exerted. If we want to withdraw our troops, it will be smooth. In this way, the chances of winning are greatly increased and the risks are greatly reduced.
make one's way up stream
Sailing against the current will also increase the number of boatmen needed. If you encounter a place where the water is very fast, you need a tracker. In ancient times, rowing was all about manpower. A ship or boat refers to a means of transportation that uses the buoyancy of water and relies on the power of manpower, sails and engines to pull, pull, push, row or push the propeller and run on the water. In addition, civilian ships are usually called ships, boats, turbines and boats, military ships are called ships and warships, and small ships are called boats, sampans, rafts or boats, collectively referred to as ships or boats.
forward power
1, wind power, mainly through the sail system (eastern hard sail, western soft sail) to borrow the power of the monsoon.
2, hydraulic, using ocean currents can greatly speed up navigation.
3. Manpower is driven by manpower in the form of oars, rudder oars and wormwood, which is more common in offshore navigation. In addition, to sail against the current, you need to pull the fiber to tow the boat.