公司动态
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2022
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Ship welding technology
Physical properties and classification of welding process A processing method in which the weldment achieves atomic bonding by heating or pressing, or both, supplemented with filler material or without filler material Welding is a process method for joining metallic materials. The essence of the welding process is to firmly connect the separated metal materials by means of heating or pressure, with the help of the bonding and diffusion of metal atoms.
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2022
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How to calculate the tonnage of a ship based on the water gauge
To calculate tonnage by volume: The gross tonnage of a ship has absolutely nothing to do with the weight of the ship, it is calculated by the volume of the ship. It is 1 ton in 100 cubic feet in imperial or 2.83 cubic meters in metric, and the result of both calculations is the same. So the gross tonnage is not The difference between the metric system and the inch system is that the calculation method is to measure the volume of the enclosed space of each part of the ship. If it is measured in feet, divide the total volume by 100; if it is measured in meters, divide it by 2.83. The quotient is the gross tonnage of the ship. The gross tonnage occupies a very important position in the various tonnage of the ship, because the registration and statistics of the ship are based on it as the gross tonnage calculated according to the central ship, minus the bridge, engine room and other equipment or work requirements Outside the space, that is, any space that can be used for loading cargo, passengers, etc. is net tonnage. The specific calculation method of ship tonnage
04
2022
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03
Navigation resistance of the ship?
Ship sailing resistance refers to the force acting on the hull to prevent the movement of the ship when the ship is sailing. Including air resistance and water resistance. In general civil ships, the air resistance is only 2% to 4% of the total resistance. Water resistance consists of two parts, one is the additional resistance of the rudder, shaft and keel that protrudes beyond the hull; the other is the resistance of the hull itself, that is, the naked resistance. The additional resistance generally only accounts for 3%~10% of the total resistance
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2022
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Type of ship
The types of ships include passenger ships, cargo ships, engineering ships, fishing boats, speedboats, etc. 1. Passenger ships: Passenger ships are ships specially used to transport passengers and their luggage and mails, mostly for regular scheduled sailings. 2. Cargo ships: Ships mainly carrying goods and carrying less than 12 passengers, such as oil tankers, bulk carriers, container ships, etc.
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2022
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FRP Ship Maintenance Tips
FRP speedboat maintenance skills: FRP is a kind of speedboat that is very popular among tourists. Whenever the tourist peaks or weekends, FRP will carry more people, so it is very necessary to maintain FRP regularly, and only do the usual maintenance work. , in order to prolong the service life. FRP speedboats should be rinsed and polished before launching, but for speedboats that have been in use, it should be polished once every three months.
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