On August 16, 2024, Zhoushan Dashenzhou Shipbuilding Co., Ltd. ignited and held a grand groundbreaking ceremony for Dalian Suri Shipping Co., Ltd.'s 7500 square meter LEG ship (hull number: WZL2306) and Hongtong Shipping Co., Ltd.'s 13000DWT duplex stainless steel chemical ship (hull number: WZ2301) in the CNC cutting workshop. This significant milestone marks the orderly progress of the above-mentioned projects.

The new shipbuilding signing ceremony of Zhoushan Dashenzhou Shipbuilding Co., Ltd. was held on February 1, 2024. At this ceremony, 1+2 145000DWT oil tankers/chemical tankers (duplex stainless steel) were signed with Infpass Shipping Co., Ltd. from South Korea; Signed 2+2 14000DWT oil/chemical tankers (special coating) with Seong Ho Shipping Co., Ltd. from South Korea; Signed a contract with KTS Shipping Co., Ltd. in South Korea for one 14500DWT oil/chemical tanker; Signed a contract with BME Shipping Co., Ltd. for one 5500 cubic meter liquefied gas transport vessel.

On the morning of October 26th, Xiamen Yonglian Shipping Co., Ltd.'s 5800DWT two-way stainless steel chemical ship "Jianhang Anda", constructed by Wuzhou Shipbuilding Industry, successfully completed the tilt test in the dock and loaded water. The total length of this ship is 109.8m, the width is 16.8m, the depth is 8.4m, the design speed is 12kn, and the endurance is about 7000 nautical miles. This ship is constructed with S32205 duplex stainless steel to meet the requirements of transporting various chemical liquid cargoes and ensuring the quality of the cargo. All liquid cargo pipelines, valves, etc. are made of 316L stainless steel, and the liquid cargo pumps are made of 316L stainless steel. This ship is used for bulk transportation of finished oil and chemicals (IMO Class 2) with a flash point less than 60 ℃. The heating temperature of the goods during transportation does not exceed 80 ℃, which meets the requirements of China Classification Society and IBC Code for Class 2 chem

The physical properties and classification of the welding process are achieved through heating or pressure, or a combination of both, with or without filling materials to achieve atomic bonding in the welded part. Welding is a process method for connecting metal materials. The essence of the welding process is to use heating or pressure to firmly connect separated metal materials through the binding and diffusion of metal atoms. The characteristic of welding technology is that welding plays a very important role in modern industrial production. It is particularly advantageous in manufacturing large structures or complex machine parts because it can be used to prepare blanks by reducing size and complexity into simplicity, and then assembled and welded step by step, which is difficult to achieve with other process methods.

Calculating tonnage by volume: The total tonnage of a ship is completely independent of its weight and is calculated based on its volume It calculates 1 ton based on either 100 cubic feet in the imperial system or 2.83 cubic meters in the metric system, and the results are the same for both So there is no difference between metric and imperial systems for total tonnage. Its calculation method is to measure the volume of the enclosed space in each part of the ship. If measured in feet, the total volume is divided by less than 100; If measured in meters, the quotient obtained by dividing by 2.83 is the Gross tonnage of the ship. Gross tonnage plays an important role in various tonnages of ships because it is used for ship registration, statistics, etc. After calculating the gross tonnage based on the central ship, the driver's cab, engine room, and other equipment or work needs on board are subtracted, which means that any space available for loading goods, passengers, etc

Ship navigation resistance refers to the force acting on the hull of a ship to prevent its movement during navigation. Including air resistance and water resistance. In general civilian ships, air resistance is only 2% to 4% of the total resistance. Water resistance includes two parts, one is the additional resistance experienced by rudders, shafts, and keel structures protruding outside the hull; The second is the resistance experienced by the hull itself, namely naked resistance. Additional resistance generally accounts for only 3% to 10% of the total resistance

The types of ships include passenger ships, cargo ships, engineering ships, fishing boats, speedboats, etc. 1. Passenger ship: A passenger ship is a vessel specifically designed to transport passengers and their luggage and mail, often on scheduled voyages. 2. Cargo ship: a vessel primarily used for transporting goods and carrying up to 12 passengers, such as oil tankers, bulk carriers, container ships, etc. 3. Engineering ship: An engineering ship is a vessel specialized in carrying out certain types of water or underwater engineering. It is equipped with a complete set of working machinery to complete specific tasks, such as waterway assurance, port operations, water conservancy construction, offshore construction, rescue and salvage, etc. 4. Fishing boat: A fishing boat is a vessel used for catching and harvesting aquatic animals and plants. This also includes some auxiliary vessels for modern fishing production, such as those used for aquatic product processing, transportation, aqu