Industry News_Fuzhou Keweisi Shipping Service Co., Ltd.

Development Trend of Ship Maintenance in Recent Years

Development Trend of (I) regular Repair Business From the perspective of repair ship type: in terms of bulk carrier repair, it is expected that the repair volume of bulk carriers will increase significantly by 2025, mainly because bulk carriers will reach the delivery peak around 2010-2011, and most ships will reach 15 years of age by 2025, when the number of ships requiring special inspection will be much higher than in other years. (II) modification business development trend With the increase of methanol dual fuel orders, it is expected that in the next 2-3 years, green methanol dual fuel modification and other projects will appear and gradually increase. According to the current dual-fuel orders of major shipping companies, methanol dual-fuel, which will come into effect in 2023, has accounted for 56% of the orders for new container ships. Some shipping companies such as Maersk have also started to have methanol dual-fuel ship modification plans. Business Opportunities from (III) Codes and Regulations The entry into force of environmental regulations such as EEXI (Technical Energy Efficiency Indicator for Existing Ships) and CII (Carbon Intensity Indicator for Operating Ships) will lead to the need for some ships to be retrofitted with environmental protection devices, which may have some modification orders. However, most shipowners will adopt the scheme of limiting power of the main engine and silicone paint of the shell, and the potential demand for large-scale modification projects such as dual-fuel modification is insufficient. The Ballast Water Convention will enter into force in 2024, before which all operating ships must be installed, so this year will be the final installation period for ballast water equipment except for new ships. The desulfurization tower will be subject to fluctuations in the price difference between high and low sulfur oil, and if the price difference is very high, there will still be a wave of market. Development Prospect of Green Ship Repair in (IV) The ship repair industry is a typical labor-intensive industry, which has the characteristics of both manufacturing and service industries. The digital transformation is difficult and generally in the exploratory stage. Most ship repair companies have implemented systems commonly used by manufacturing companies, which generally cover finance, procurement and warehousing, OA, and personnel. Some leading domestic management enterprises are exploring the core process of ship repair business step by step, integrating operation, production and settlement management, and establishing an electronic price library to solve the core business pain points such as low efficiency and difficulty in standardization of project orders, many settlement disputes with subcontractors and long settlement cycle, and to merge and circulate initial orders, inspection orders, sub-orders, final completion orders, external settlement orders, sub-bills and internal settlement orders, with this as the main line to further through the quality, safety, materials, logistics, etc., and docking financial system, to achieve the integration of industry and finance. The digital future of ship repair will be based on massive big data, AI, cloud computing and other technologies to accelerate the application and development of intelligent ship repair production and the whole life cycle of ships.

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2024/03

How to protect ships from rust

1. Coating Coating is one of the most commonly used protective measures on the surface of ships. The surface of the hull is coated with an anti-corrosion coating such as epoxy paint coating, zinc coating or stainless steel plate, which can play an anti-corrosion role. 2. Cathodic protection Cathodic protection is one of the main measures for ship surface corrosion protection. A cathode is placed near the metal surface and is in communication with the metal surface. Since the potential of the cathode is lower than the metal surface, the battery formed between the two will inhibit the electrochemical reaction, thereby slowing down corrosion. 3. Electrochemical protection There are two methods of electrochemical protection, namely anode and conductive coating. In the anode protection, the current is introduced into the metal surface to slow down the corrosion; in the conductive coating protection, the conductive particles are added to the coating to make the entire coating become an electrode, thereby increasing its electrochemical impedance and reducing the corrosion reaction rate. 4. Mechanical protection Mechanical protection is a form of physical isolation that protects metal surfaces from damage by installing physical barriers such as metal meshes, guardrails and steel plates.

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2024/03

What are the characteristics of ship paint? How to judge the quality

Characteristics of 1. marine paint Anti-corrosion performance: marine paint has good anti-corrosion performance, can effectively protect the hull from seawater, salt spray and other corrosion. Wear resistance: Marine paint has high wear resistance and can withstand the friction and impact of ships during water transportation. UV resistance: Marine paint has good UV resistance, which can effectively resist ultraviolet radiation and prevent damage to the hull due to exposure to the sun. High adhesion: ship paint and hull material adhesion is strong, not easy to fall off and crack. Fast drying: The ship paint has a fast drying speed and can form a complete paint film in a short time to improve the efficiency of ship maintenance. Anti-fouling: Marine paint has good anti-fouling properties, which can prevent marine organisms from attaching to the hull, affecting the speed of the ship and increasing energy consumption. 2. ship paint quality judgment method Check product performance indicators: When purchasing marine paint, you need to check the performance indicators of the product, including temperature resistance, weather resistance, abrasion resistance, chemical resistance, etc. Compare different brands and models of marine paint, choose products that meet your needs. Pay attention to paint brands and manufacturers: When buying marine paint, you should try to choose products from well-known brands and regular manufacturers. These products have undergone strict testing and certification, with high quality and environmental performance. Check the adhesion and abrasion resistance of the coating: The adhesion and abrasion resistance of the coating can be tested experimentally to judge its quality and performance. Usually, the test methods such as cross-cut method and drawing method can be used for detection. View the environmental performance of coatings: With the improvement of environmental awareness, more and more companies are beginning to pay attention to the environmental performance of their products. When purchasing marine paint, we should try our best to choose products with good environmental performance to reduce environmental pollution. Price and cost performance: price is an important factor to consider when choosing marine paint. When choosing ship paint, we should not only consider the price, but also consider the cost performance, and choose the ship paint that meets the demand and the price is reasonable. Reference user evaluation and use experience: By understanding the evaluation and use experience of other users, you can obtain information about the quality, performance and scope of application of marine paint, and provide a reference for your own purchase.

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2024/03

Causes and Protection of Ship Rust

1. Water oxidation Water contains oxygen, and when water comes into contact with a metal surface, the oxygen reacts with oxidizable species on the metal surface to form an oxide layer. 2. Seawater corrosion Salts and other impurities in seawater can increase the rate of corrosion of metals. In addition, the waves and temperature changes encountered by ships at sea can also cause damage to the metal surface. 3. Electrochemical corrosion Metal surfaces contact each other to form an electrochemical reaction system based on temperature, position and material. This system will form various reactions, one of which is the battery reaction, which will cause corrosion and eventually rust on the metal surface.

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2024/03

Formation of marine biofouling on ships

The long-term contact of ships with sea water causes a large number of bacteria to adhere to the surface of their materials, forming a layer of biological regulation film. The larvae and robes of the first generation of plankton landed on the biological regulation membrane one after another, secreting mucus that enhanced adhesion, and carried out strong adhesion and continuous reproduction through one or more cooperative operations of chemical bonding, electrostatic interaction, mechanical interlocking and diffusion interlocking. After the death of the old generation of organisms, some of them will not fall off automatically, and the new generation will reattach to its surface, eventually forming a large-scale biota. Generally speaking, affected by environmental factors such as water salinity and water velocity, the organisms attached to the hull will die and fall off automatically. In fact, sea creatures such as shellfish hard shells will not automatically fall off after their death due to strong adhesion, which will become the basis for a new round of biological attachment. The main attachment parts are hull surface, propeller, propeller shaft, sonar chamber, seabed door, etc. The continuous accumulation and erosion of attachments will eventually cause ship fouling.

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2024/03

Impact of marine life on shipping

We know that the sea water has a strong corrosive effect on the ship, and the marine products have a tenacious adhesion to the ship. After the ship is watered down for a period of time, a lot of marine products such as barnacles and algae and rust spots will be attached to the hull. The existence of these attachments accelerates the corrosion of the hull. On the other hand, it increases the resistance of the ship, reduces the navigation speed of the ship, and limits the warship's ability to play. Marine attachment is a general term for animals, plants and micro-organisms that are attached to the bottom of a ship and to the surface of facilities in the sea. The micro-attached species mainly include bacteria, diatoms, protozoa (unicellular animals), chakra and thakra. The type attached products include chlorophyta moss, also known as moss strips, moss vegetables, etc. Also known as sea vegetables, sea vegetables, sea lettuce, green vegetables, moss vegetables, etc. Porous animal sponge, coelenterate hydra, group animal moss, etc. Bivalve mollusks, oyster vines, crustacean barnacles and vertebrate seaweed, etc. Marine attached objects are extremely harmful to ships. They increase the weight of ships, the resistance of ships during navigation, corrode ships and reduce the strength of ships. Shrink the pipe diameter of the cooling pipe and the condenser pipe of the heat exchanger of the ship, which is even completely blocked. Promote the corrosion of ship plate and ship plate welding seam, so that the sea instrument and machinery failure. Acoustic instruments are degraded or disabled due to the absorption of acoustic energy by attached organisms. Increase the accumulation of buildings in the sea, from the impact of waves and currents. Change the fixed depth of the floating body in the water source, etc., and block the hole. The attachment of marine organisms is related to the speed of the ocean current, which is difficult to attach when the speed of the ocean current exceeds 1 sea/volume. The attachment of products is also related to ship materials. Brass, red copper and copper containing more than 65% copper are basically not attached to products. In order to prevent the adhesion of objects, usually use chemical coating on the surface of the ship plate. or special materials. If you use the aircraft carrier Liaoning, the composite material plate is used to prevent the adhesion of the product. And it is necessary to make use of the machine to clean it in time.

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2024/03

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Hotline:+86 134 0599 8895

Contact Phone:+86 186 5077 7126

E-mail:fuzhoukeweisi@163.com
Fuzhou Kowis Ship Service Co., Ltd.

Address: Liandong U Valley Fuzhou Internet of Things Industrial Park, No. 12 Xingye West Road, Mawei District, Fuzhou City

Hotline:+86 13405998895

Contact Phone:+86 18650777126

E-mail:keweisiqygl@163.com
Fuzhou Kowis Ship Service Co., Ltd.

Address: Liandong U Valley, 12 Xingye West Road, Mawei District, Fuzhou City, Fujian Province. 801-1, Building 1, Fuzhou Internet of Things Industrial Park (Pilot Free Trade Zone)