What is the tonnage of the ship mentioned in the crew recruitment?

Ship tonnage can be divided into three parts.

Net tonnage refers to the effective volume of the ship measured and determined by the national authorities.

Gross tonnage refers to the total volume of ships measured and determined by national authorities.

Net tons and total tons can be understood as the usable area and building area of the house.

Deadweight ton refers to the deadweight that a ship can use in operation. The deadweight tonnage can be divided into gross deadweight tonnage and net deadweight tonnage. Specifically, you can Baidu.

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The tonnage of a ship is in direct proportion to its size. The bigger the tonnage, the bigger the ship. The metaphor of a house is that the larger the usable area, the bigger the house.