Why does the ship sail against the wind and waves?

The main purpose of sailing on the top of the ship is to protect the hull structure, navigation safety and improve navigation efficiency. The following are specific reasons:

1. Protect the hull structure: Strong winds and huge waves may cause damage to the hull structure. Driving against the wind and breaking the waves can reduce the frontal collision between the hull and the wind and waves, and reduce the risk of hull damage.

2. Improve navigation efficiency: properly adjust the course, make the bow tilt to the wind and waves, and bypass along the "Z" trajectory, so that both sides of the ship can penetrate the waves, which can improve navigation efficiency.

3. Navigation safety: When sailing along the waves, a ship with a slender hull and a vertical stem is beneficial, but it is necessary to avoid using a large rudder angle to prevent the ship from yawing and causing accidents.

In a word, the purpose of sailing on the top of the ship is to protect the hull structure, improve the navigation efficiency and ensure the navigation safety under bad weather conditions.