What are the characteristics of submarine appearance?

The shape of submarine can be divided into conventional type, water drop type and transitional type according to the linear shape of hull.

The conventional submarine is the line type used by submarines before and after the First World War. The side shape of this submarine is similar to that of a surface ship. In order to reduce the wave resistance during sailing, the bow is shaped like the bow of a surface ship. In order to make the submarine seaworthy in the wind and waves, the bow has a large ridge arc and a floating box, and the buoyancy provided by the floating box can improve the submarine's burial in the wind and waves.

There are many kinds and shapes of submarines, ranging from fully automatic or small civilian diving detectors operated by one or two people for several hours to Russian typhoon-class nuclear submarines that can carry hundreds of people and snorkel continuously for 3-6 months.

Extended data:

Submarine function:

Submarines can use the water layer to cover hidden activities and carry out sudden attacks on the enemy; It has great self-sustaining, endurance and operational radius, can be far away from the base, can fight independently for a long time, in a large ocean area or even in the enemy sea area, and has strong assault force; It can launch missiles, torpedoes and mines underwater and attack targets at sea and on land.

Submarines are also used for non-military purposes, such as marine scientific research, property rescue, exploration and development, scientific exploration, equipment maintenance, search and rescue, submarine cable maintenance, underwater tourism and academic investigation.

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