How to calculate tonnage and what is the formula for calculating tonnage?

That is, the amount of water discharged (the quality of the water discharged).

Theoretical calculation: ton good concession = square density.

Tonnage is a unit that standardizes the measurement and approval of hull volume, and the internal volume of civil ships is calculated by tonnage. Port charges, mooring fees, berthing fees, etc., are calculated based on net tonnage. Ships that have determined gross tonnage and net tonnage in accordance with the tonnage measurement specifications will receive a tonnage measurement certificate issued by the competent authority.

DWT is the unit of weight of a ship.

It is divided into gross load capacity and net load with notice.

The total deadweight capacity, also known as stowage capacity, refers to the maximum weight that can be loaded according to the provisions of the load line marking, that is, the full load displacement of the ship.

The difference with the displacement of an empty ship. It includes the weight of the cargo carried and the weight of the various supplies that need to be stockpiled during the ship's voyage.

(1) The weight tonnage of the ship

The weight tonnage of a ship is a unit of measurement that indicates the weight of a ship, measured in 1,000 kilograms as one metric ton, or 2,240 pounds as a long ton, or 2,000 pounds as a short ton. At present, the metric system is mostly used as the unit of measurement in the world. The weight tonnage of ships can be divided into two types: displacement tonnage and deadweight tonnage.

2) displacement tonnage

The displacement tonnage is the tonnage of the water discharged by the ship in the water, and it is also the tonnage of the ship's own weight. The tonnage of displacement can be divided into three types: light displacement, heavy displacement and actual displacement.

1) Light displacement (ligth displacement), also known as empty ship displacement, is the sum of the weight of the ship itself, the crew and the necessary provisions, and is the minimum weight of the ship.

2) Full load displacement, also known as full load displacement, is the weight of the ship when the draft reaches the maximum load line after carrying passengers and cargo, that is, the maximum weight of the ship.

3) Actual displacement is the actual displacement of the ship after each voyage.

The formula for calculating the displacement is as follows:

Displacement (long tons) = length * width * draft * square modulus (cubic feet) 35 (seawater) or 36 (freshwater) (cubic feet).

Displacement (metric tons) = length * width * draft * square modulus (cubic meters of seawater) or 1 (fresh water) (cubic meters).

Displacement tonnage can be used to calculate the deadweight tonnage of a ship; When building a ship, the weight of the ship can be known according to the displacement tonnage; When counting the size of the ** and the fleet, the light displacement is generally the standard; **Through the Panama Canal, the actual displacement is used as the basis for taxation.

Ship Green Concept:

China has officially implemented the "Green Ship Specification". In the future, the ships built will be green recognized according to the three major indicators of energy efficiency, environmental protection and working environment, and divided into three grades: greenship, greenship, and greenship (among them:

greenship is the highest level).

Green Ship Specification", which is divided into four chapters: General Principles; energy efficiency requirements; Environmental protection requirements as well as working environment requirements. Although the whole article does not talk about the use of green paints in the design and construction of ships.

However, green ships are an inevitable trend in the future development of the shipping industry, so it is the responsibility of all industries to protect the marine ecology of rivers.

In recent years, under the guidance of the "Shipbuilding Industry Revitalization and Adjustment Plan", China's shipbuilding industry has become an international power with the prosperity of the marine logistics platform. The promulgation of the "Green Ship Code" is not only related to the development trend of international marine environmental protection, but also related to the responsibility that China should assume as a leader in the field of global marine equipment.

1. Calculate tonnage by weight: Usually calculated according to the volume of the hull in the water, that is, calculated by displacement, the seawater weighs 1 ton per 35 cubic meters (or 1 metric ton per cubic meter), so the displacement tonnage of the ship can be calculated.

2. Use volume to calculate tonnage: The total tonnage of the ship has nothing to do with the weight of the ship, it is calculated by the volume of the ship. It is calculated as 1 ton in the imperial 100 cubic feet or in the metric cubic meter, and the result is the same.

Therefore, there is no difference between the metric system and the imperial system in gross tonnage, and its calculation method is to measure the volume of the enclosed space of each part of the ship, if it is measured in feet, the sum of the volumes is not divided by 100; If measured in meters, divide by and the resulting quotient is the gross tonnage of the ship.

Classification of ship tonnage:Ship tonnage is divided into two categories: volumetric tonnage and weight tonnage.

Volume tonnage is a unit of measurement calculated by "tonnage" for ship registration, and each ton is equivalent to the volume of cubic meters, which is a common ship statistical unit in all countries in the world, reflecting the size of the ship; Weight tonnage refers to the weight of the ship in the water with the same volume of water, which is divided into empty ship weight and deadweight weight, which can indicate the load transportation capacity of the ship.

The above content reference:

Encyclopedia - Ship tonnage.

Ship tonnage is a unit of measurement for the size of a ship, which can be divided into two types: weight tonnage and volume tonnage. Tonnage by weight:

Usually based on the volume of the hull in the water, i.e. in terms of displacement, the seawater weighs 1 ton (or 1 metric ton per cubic meter) per 35 cubic feet, and thus it is sufficient.

The tonnage of a ship is its displacement, and in simple terms, it is like a pool full of water, and the weight of the water squeezed out by the ship after the boat is put into it.

The deadweight tonnage of a ship can be divided into gross deadweight tonnage and net deadweight tonnage. Gross deadweight tonnage = full load displacement - empty ship displacement. The net deadweight tonnage is the difference between the total deadweight of the ship and the weight of fuel, fresh water and other reserves that need to be stockpiled during the ship's voyage.

The size of the ship is expressed in terms of displacement. It refers to the gravity of the water discharged after the ship is fully loaded, that is, the buoyancy of the water after the ship is fully loaded. Depending on the conditions under which the object floats, the following formula can be derived: displacement (buoyancy) = weight of the ship itself + gravity of the cargo when fully loaded.

Displacement tonnage Displacement tonnage is the tonnage of water discharged by a ship in the water, and it is also the tonnage of the ship's own weight. The displacement tonnage can be divided into three types: light displacement, heavy displacement and actual displacement: 1) Light displacement, also known as empty ship displacement, is the sum of the weight of the ship itself, the crew and the necessary provisions, and is the minimum weight of the ship.

2) Heavy displacement, also known as full load displacement, is the weight of the ship when the draft reaches the maximum load line after carrying passengers and cargo, that is, the maximum weight of the ship. 3) Actual displacement is the actual displacement of the ship after each voyage after carrying cargo. The formula for calculating the displacement is as follows:

Displacement (long tonnage) = length * width * draft * square modulus (cubic feet) 35 (seawater) or 36 (freshwater) (cubic feet) displacement (metric tonn) = length * width * draft * square modulus (cubic meters of seawater) or 1 (fresh water) (cubic meter) displacement tonnage can be used to calculate the deadweight tonnage of a ship; When building a ship, the weight of the ship can be known according to the displacement tonnage; When counting the size of the ** and the fleet, the light displacement is generally the standard; **Through the Panama Canal, the actual displacement is used as the basis for taxation.

Summary. Volume = Weight Density.

That is, volume is equal to weight divided by density.

Tonnage conversion square quantity formula.

Volume = Weight Density is that volume is equal to weight divided by density.

Tell me exactly what you're loading, how much it weighs, and what is the density of the substance.

What I'm asking for is a formula for calculating.

Volume = Weight Density.

That's the formula.

The square quantity is also the volume.

Tonnage is also weight.

For example, how to calculate a ton of soil.

When the density of the soil is g cm3, the weight of 1 cubic meter of soil is about tons, and the weight of 1 cubic meter of saturated clay is about tons. To claim the weight of the soil, according to the density of the soil, the mass hail base is equal to the product of volume and density (m = p v).

It has to do with the soil you pull.

If it's general soil.

volume = 1 cubic meter).

At this time, the density is calculated, and this is the density of most loose soils.

Tonnage (t) = length (l) width (b) depth (d) waterline (c) coefficient (k).

Length, width, depth and waterline all refer to the size parameters of the ship, and the coefficient is an empirical value, which is usually determined according to factors such as the type of ship, the use, and the navigation area.

The tonnage calculation formula refers to the theoretical calculation formula of the tonnage of the ship, in fact, the tonnage of the Chang cruise ship Laxun also needs to be measured and determined according to the regulations of the International Maritime Organization or relevant agencies. In practice, the calculation and verification of tonnage requires the support and assistance of professional technicians and related institutions.