In the vast and dynamic landscape of China’s maritime and energy sectors, offshore cranes play a pivotal role in driving economic growth, energy production, and sustainable development. As a crucial component in offshore oil and gas exploration, renewable energy projects, and subsea construction, these specialized cranes are engineered to operate in the harshest of marine environments.

This in-depth guide delves into the world of offshore cranes in China, exploring their significance, technological advancements, and market trends. Readers will gain insights into how these cranes are designed and manufactured to meet the stringent demands of offshore operations, including their various types such as knuckle boom, telescopic, and lattice boom cranes. The guide will also cover the key drivers of the market, including the increasing demand for oil and gas, the surge in offshore wind energy projects, and government initiatives to boost renewable energy.

Additionally, you will learn about the challenges faced by the industry, such as high installation costs and the need for skilled manpower,

Offshore Cranes Supplier And Manufacturer in China

Since the specific website https://ouco-industry.com/offshore-cranes/ is not accessible in the provided search results, I will create a comprehensive guide based on the information gathered from the other reliable sources.

Offshore Cranes: A Comprehensive Guide

Introduction

Offshore cranes are specialized lifting equipment designed to operate in the harsh marine environment, supporting various activities such as offshore oil and gas extraction, wind power installation, and maritime construction. This guide provides an in-depth look at the types, applications, and key features of offshore cranes.

Types of Offshore Cranes

Ship Cranes

• These cranes are installed on ships and are used for cargo transfer between ships, sea supply, and underwater operation equipment placement and recovery. They are known for their high loading and unloading efficiency and ease of operation, but can impact the stability of the ship due to their size and weight[2].

Floating Cranes

• Floating cranes consist of one or more pontoons and are highly mobile, making them suitable for offshore construction, building, demolition, and other tasks. They can be equipped with various lifting equipment such as cradles, bucket cranes, and lifting hooks. However, their stability can be affected by the offshore environment[2].

Mast Cranes

• Characterized by a simple structure, mast cranes are easy to use and suitable for simple lifting operations. They are typically installed on small vessels with limited lifting weight capacity and a narrow scope of application[2].

Ram Luffing Knuckle Boom Cranes (RL-K)

• Developed for the specific requirements of the offshore market, these cranes are used for onboard, offboard, and subsea lifts. They are equipped with modular lifting equipment like pipe grabs and load manipulators for handling pipes and risers on drilling vessels[1].

Board Offshore Cranes (BOS)

• The BOS rope luffing type offshore crane is ideal for applications requiring high lifting capacities at medium or high outreaches. Known for maximum reliability and minimum downtime, these cranes have been in use since 1975 and are leaders in their class[1].

Heavy Lift Cranes

• Designed for offshore construction, these cranes have lifting capacities of over 1,000 tons and are used for tasks such as installing wind turbine components and placing offshore platforms. They can handle lifting heights well beyond 170 meters above sea level[1][3].

Subsea Cranes

• These cranes are equipped with multilayer active heave compensation (AHC) winch systems and can be fitted with Kinetic Energy Recovery Systems (KERS). They are used for setting up oil and gas extraction systems underwater and other deep-sea operations[3].

Areas of Application

Wind Power

• Offshore cranes play a crucial role in the construction, maintenance, repair, and potential repowering or dismantling of offshore wind turbines and associated infrastructure. They handle the installation of foundations, wind turbines, and transformer and converter stations[1].

Oil and Gas

• Offshore cranes are essential for the assembly, repair, and supply of oil and gas extraction systems. The design and performance of these cranes vary according to the specific requirements of the operation[1].

Deep Sea Operations

• These cranes are used for setting up oil and gas extraction systems underwater and other deep-sea tasks. The ram luffing knuckle boom crane (RL-K) is particularly suited for these applications due to its specialized equipment[1].

Decommissioning

• As the industry transitions away from fossil fuels, offshore cranes are increasingly used for the safe decommissioning and removal of maritime oil and gas production infrastructure. They provide both standard and customized solutions for this complex process[1].

Key Features and Considerations

Design and Construction

• Offshore cranes must be designed to withstand the harsh marine environment, including wind, waves, sea currents, and seawater corrosion. They need to have structural strength, stability, and reliability to ensure efficient and safe operations[2].

Automation and Intelligence

• Modern offshore cranes often feature high levels of automation and intelligence to improve operational efficiency and safety. This includes electric cranes with high efficiency, correct speed change, and easy remote control, as well as hydraulic cranes with stable operation and step-less speed regulation[2].

Safety and Reliability

• Safety is paramount in offshore operations. Cranes are equipped with features like automatic overload protection systems and are designed to minimize downtime and ensure maximum reliability[1][3].

Customization and Support

• Many manufacturers offer customized solutions tailored to specific customer needs. This includes full life cycle support, including inspection, repair, upgrades, and on-site service to maximize the use of the crane assets[3].

Choosing the Right Offshore Crane

Lifting Requirements

• The choice of crane depends on the specific lifting needs, including the weight, size, and shape of the cargo to be lifted. This determines the lifting capacity and working range of the crane required[2].

Working Environment

• The offshore working environment is complex and variable. The crane must be stable and adaptable to factors such as wind, waves, sea currents, and seawater corrosion[2].

Equipment Characteristics

• Different types of cranes have different characteristics. For example, electric cranes are suitable for scenes requiring high operational efficiency, while hydraulic cranes are better for operations requiring high precision[2].

Conclusion

Offshore cranes are critical components in various marine and offshore operations, offering a range of capabilities and features tailored to specific needs. Understanding the types, applications, and key features of these cranes is essential for selecting the right equipment and ensuring safe and efficient operations in the challenging marine environment.

Offshore Crane

Since the provided query does not include access to the specific website https://www.tytanmarine.com/products/cranes/offshore-crane, the following guide will be based on general information about offshore cranes, drawing from the other sources provided.

Guide to Offshore Cranes

Introduction

Offshore cranes are specialized lifting equipment designed for operations in the harsh marine environment, particularly for oil and gas platforms, offshore construction, and maintenance tasks. These cranes must be robust, reliable, and capable of handling a variety of loads under diverse sea conditions.

Types of Offshore Cranes

Knuckle Boom Cranes

• These cranes feature a foldable boom that allows for more compact storage and easier transportation.
• They are often used on vessels and platforms where space is limited.
• Examples include the GK 45-20 EH, which has a main winch SWL of 45 tons and an auxiliary winch SWL of 15 tons[1].

Lattice Boom Cranes

• Known for their high lifting capacities and long outreach.
• Often used on larger vessels and platforms for heavy-lift operations.
• The Liebherr BOS series, for instance, offers boom lengths from 33 to 102 meters and lifting capacities up to 1,200 tons[4].

Mast Cranes

• Designed for ultra-deepwater operations, these cranes have a compact footprint and are built from high-tensile steel.
• Huisman’s Offshore Mast Crane (OMC) can lift up to 8,000 tons and is suitable for operations in depths of up to 5,000 meters[3].

Key Features and Technologies

Active Heave Compensation (AHC)

• AHC systems are crucial for offshore operations as they compensate for the movement of the vessel, ensuring stable and precise lifting.
• These systems can be integrated with kinetic energy recovery systems (KERS) to enhance efficiency[5].

Drive Systems

• Offshore cranes can be powered by either diesel-hydraulic or electric-hydraulic systems, depending on the client’s specifications and operational needs[1][4].

Control Systems

• Advanced control systems like Liebherr’s Litronic® system provide real-time monitoring and control, enhancing safety and efficiency[4].

Safety and Certification

• Offshore cranes are subject to stringent safety standards and certifications, such as those from DNV, API, and ABS.
• They can be certified for man-riding and personnel rescue operations[1][4].

Operational Capabilities

Lifting Capacity and Outreach

• Offshore cranes vary widely in lifting capacity, from 25 tons to over 1,200 tons, and outreach, ranging from a few meters to over 100 meters[2][4].

Speed and Precision

• These cranes can achieve high hook speeds, such as up to 120 m/min in AHC mode, and precise slewing speeds, typically 0-1 rpm[1].

Environmental Conditions

• Offshore cranes are designed to operate in harsh sea conditions, including significant wave heights and extreme temperatures. For example, some cranes are designed to operate with a minimum design temperature of -17°C[1][4].

Applications

Maintenance and Supply

• Offshore cranes are essential for maintenance tasks on oil and gas platforms, including supplying materials and equipment[2].

Construction and Heavy-Lift

• They are used in offshore construction projects, such as installing wind turbines and handling heavy loads in deepwater environments[3][5].

Subsea Operations

• Specialized subsea cranes are equipped with deepwater hoist systems and AHC, enabling precise and stable lifting in ultra-deepwater conditions[3][5].

Maintenance and Support

Design for Maintenance

• Offshore cranes are designed with maintenance in mind, featuring accessible machinery compartments and service platforms to ensure easy maintenance and repair[4].

Lifecycle Support

• Manufacturers often provide comprehensive support, including inspections, repairs, upgrades, and on-site service to maximize the crane’s operational life[5].

Conclusion

Offshore cranes are critical components in the offshore industry, offering a range of capabilities and technologies to meet the demanding requirements of marine operations. Their design, features, and operational capabilities make them indispensable for various tasks, from maintenance and supply to heavy-lift construction and subsea operations.

China Subsea Offshore Crane Manufacturers, Suppliers

Since the provided URL does not lead to a accessible or existing page, I will create a comprehensive guide based on the general characteristics, features, and applications of subsea and offshore cranes, using the information from the other sources.

Guide to Subsea and Offshore Cranes

Introduction

Subsea and offshore cranes are specialized lifting equipment designed to handle the unique challenges of marine and offshore environments. These cranes are crucial for various operations including oil and gas extraction, offshore wind farm construction, and subsea installations.

Types of Offshore Cranes

Rope Luffing Cranes

• Characteristics: These cranes are ideal for applications requiring high lifting capacities at medium to high outreaches. They feature a rope luffing system that allows for precise control over the boom angle[3][4].
• Applications: Commonly used in oil and gas platforms, wind farms, and other offshore installations where high lifting capacities are necessary.

Cylinder Luffing Cranes

• Characteristics: These cranes use hydraulic cylinders to adjust the boom angle, providing excellent versatility and control. They are often used in box boom and knuckle boom configurations[2][3].
• Applications: Suitable for onboard material handling, off-board loading operations, and subsea lifts, especially with Active Heave Compensation (AHC).

Ram Luffing Cranes

• Characteristics: Known for their compact design and small tail radius, these cranes are ideal for operations where space is limited. They offer medium lifting capacities and are reliable for unmanned platforms[3][4].
• Applications: Used in deep sea operations, pipe handling, and other tasks requiring precise control in confined spaces.

Knuckle Boom Cranes

• Characteristics: These cranes offer superb flexibility and maneuverability, with a low stowing height and simple operation. They are particularly effective for handling free-hanging loads and stabilizing suspended loads during adverse weather[2][3].
• Applications: Widely used on vessels for onboard, offboard, and subsea lifts due to their ability to reduce the dynamic moment on the vessel structure.

Key Features of Offshore Cranes

Active Heave Compensation (AHC)

• Functionality: AHC systems compensate for the motion of the crane vessel, allowing for safe and steady transfer of loads through the splash zone and onto the seabed, even in harsh conditions[2][4][5].
• Importance: Extends the weather window for operations, enhancing safety and efficiency.

Control Systems

• Advanced Control: Modern offshore cranes are equipped with powerful, intuitive control systems that integrate all motions, including tension modes, auxiliary winches, and tugger winches. These systems ensure precision and safety during critical operations[1][5].
• Remote Control and Diagnostics: Many cranes offer remote control and diagnostics capabilities, such as satellite-based online support systems, to enhance operational efficiency and maintenance[5].

Safety Features

• Overload Protection: Systems like Manual Overload Protection System (MOPS) and Automatic Overload Protection System (AOPS) are standard in many offshore cranes to ensure maximum safety during operations[4].
• Wire Rope Integrity Monitoring: Some cranes come with wire rope integrity monitoring systems to maintain the health and safety of the lifting equipment[5].

Environmental Adaptability

• Low Temperature Packages: Cranes can be customized for operation in extremely cold environments, with temperatures down to -40°C[5].
• Hazardous Area Operation: Many cranes are designed to operate in both safe and hazardous areas, making them versatile for various offshore applications[1][4].

Applications of Offshore Cranes

Oil and Gas

• Platform Assembly and Repair: Offshore cranes are essential for the assembly, repair, and supply of oil and gas extraction systems[3][4].
• Subsea Installations: Cranes equipped with deep sea winches and AHC systems are used for setting up oil and gas extraction systems underwater[3][4].

Offshore Wind

• Construction and Maintenance: Heavy-lift offshore cranes play a critical role in the construction, maintenance, and repowering of offshore wind turbines and associated infrastructure[3][4].

Subsea Operations

• Material Handling: Offshore cranes handle material transfers between vessels and platforms, as well as subsea lifts to and from the seabed[1][2][5].
• Pipe Handling: Specialized lifting equipment such as pipe grabs and load manipulators are used for handling pipes and risers on drilling vessels[3][4].

Maintenance and Service

Design for Maintenance

• Modular Design: Many offshore cranes are designed with modular systems to ensure maximum reliability and ease of maintenance. This includes easy access to all inspection and service areas[1][3][4].
• Innovative Machine House Design: Some cranes feature innovative machine house designs that provide more space for maintenance work, enhancing overall maintenance comfort[4].

Training and Support

• Operator Training: Comprehensive training programs, including simulator training, are available to ensure operators are well-versed in the operation and maintenance of these complex systems[1].
• Remote Diagnostics and Support: Advanced control systems often include remote diagnostics and online support, ensuring prompt and efficient service support[5].

This guide provides a comprehensive overview of the types, features, and applications of subsea and offshore cranes, highlighting their importance in various marine and offshore operations.

Cranes

Guide to Marine Cranes by Tytan Marine

Overview of Tytan Marine

Tytan Marine is a specialized manufacturer of marine cranes, focusing on the design, production, and repair of various types of cranes for marine applications. The company offers a wide range of cranes tailored to different needs and environments.

Types of Marine Cranes

Tytan Marine provides several types of marine cranes, each designed for specific purposes:

Multi-function Crane

• Designed for versatility, these cranes can perform multiple tasks.

Suez Canal Searchlight Davit

• Specialized for search and rescue operations, particularly in the Suez Canal.

Pipe Handling Davit Crane

• Used for handling pipes and other long, heavy items.

Offshore Crane

• Designed for use in offshore environments, such as oil rigs and platforms.

Deck Cargo Crane

• Utilized for loading and unloading cargo on deck.

Marine Straight Boom Crane

• Features a straight boom for straightforward lifting operations.

Hydraulic Fixed Boom Crane

• Uses hydraulic power for stable and precise lifting.

Knuckle Boom Crane

• Offers flexibility with its articulated boom.

Telescopic Crane

• Capable of extending its boom to reach distant areas.

Provision Crane

• Used for loading and unloading provisions and supplies.

Folding Crane

• Compact and foldable, ideal for spaces with limited clearance.

Davit Crane

• Typically used for launching and recovering lifeboats or other equipment.

Applications of Marine Cranes

Tytan Marine cranes are used in various sectors, including:

Commercial Fleet

• For cargo handling and maintenance on commercial ships.

Offshore

• On oil rigs, platforms, and other offshore installations.

Platform

• For operations on fixed or floating platforms.

Dockside

• For loading and unloading cargo at docks.

Military

• For military vessels and operations.

How to Select a Marine Crane

When choosing a marine crane, several factors should be considered:

Boom Type

• Decide between fixed boom, knuckle boom, telescopic boom, or folding boom cranes based on your needs.

Lifting Capacity

• Determine the maximum weight the crane needs to lift.

Lifting Radius

• Consider the radius within which the crane needs to operate.

Maximum Boom Length

• Choose a crane with a boom length that meets your operational requirements.

Speed of Operation

• Consider the raising and lowering speed of the crane, especially when handling loads.

Power Source

• Decide whether the crane should be powered by an electric, diesel, or customer-provided power pack.

Control Options

• Choose between local control, remote control, or custom control options.

Key Features of Tytan Marine Cranes

Tytan Marine cranes are designed with several key features to ensure reliability and efficiency:

Design Standards

• Comply with international standards such as CCS, BV, ABS, NK, GL, DNV, RINA, RS, and IRS.

Simultaneous Operation

• Capable of simultaneous operation of two or more functions.

Control Options

• Offers various control options to suit different operational needs.

Continuous Rotation

• Features 360º continuous rotation with available limits.

Materials and Construction

• Made with heat-treated stainless steel and continuous welding throughout.

Coating

• Protected with epoxy zinc-rich primer marine coating.

Lubrication

• All kinematic pairs are well-lubricated for smooth operation.

Assembly and Testing

• Factory-assembled and factory acceptance tested to ensure quality.

Additional Considerations

When selecting a crane from Tytan Marine, consider the following:

Pedestal Interface

• The crane can be customized to fit specific pedestal requirements.

Customization

• Tytan Marine offers customization options to meet client-specific needs.

By carefully evaluating these factors and features, you can select the most appropriate marine crane for your specific application, ensuring efficient and safe operations.

Offshore Crane – China Manufacturers, Factory, Suppliers

Since the provided query does not include access to the specific website https://www.dredgingsystem.com/offshore-crane/, I will create a comprehensive guide based on the general information available from the other sources on offshore cranes.

Offshore Cranes: A Comprehensive Guide

Introduction

Offshore cranes are specialized lifting equipment designed to operate in the harsh marine environment, particularly on offshore platforms, vessels, and other sea-based installations. These cranes are crucial for various operations including cargo handling, maintenance, and subsea activities.

Types of Offshore Cranes

Fixed Boom Cranes

• These cranes have a rigid, fixed boom and are often used for general cargo handling and maintenance tasks[3][4].

Telescopic Boom Cranes

• These cranes feature a boom that can be extended or retracted, providing flexibility in reaching different distances and heights[1][4].

Knuckle Boom Cranes

• Known for their articulated boom, these cranes offer excellent maneuverability and are often used in confined spaces or for precise lifting operations[2][4].

Lattice Boom Cranes

• These cranes use a lattice structure for the boom, which provides high strength-to-weight ratio, making them suitable for heavy lifting tasks[3][4].

3D Knuckle Boom Cranes

• These cranes combine the features of knuckle and telescopic booms, offering advanced flexibility and reach[2].

Key Features and Specifications

Swing Rotation

• Offshore cranes typically feature 360-degree continuous rotation with a standard swing speed of 0.5 to 2 RPM, equipped with a failsafe brake option[1].

Hydraulic System

• Cranes often use hydraulic systems, which can be configured as standard open center or skid-mounted systems. The hydraulic power unit (HPU) can be located on the crane or below deck[1][5].

Boom and Cylinder Construction

• Booms are usually made from high tensile steel, and hydraulic cylinders are constructed with honed steel tubes and internally ported load hold valves to maintain position in case of hydraulic pressure loss[1].

Hinge Pins and Bushings

• Hinge pins are machined from hardened stainless steel and run in bronze bushings to ensure durability and smooth operation[1].

Winches and Hoisting

• Main winches can have capacities up to several thousand meters of wire and can be mounted on the crane or below deck. Auxiliary winches are also available for smaller tasks[2][5].

Control Systems

• Advanced control systems are integrated into offshore cranes, ensuring precision and safety during operations. These systems include features like active heave compensation, auto-tensioning, and dynamic load calculators[4][5].

Operator Cabin and Safety Features

• Cranes are equipped with fully-equipped, air-conditioned, and ergonomically designed operator cabins. Safety features include personnel lifting certification, winterization packages, and remote diagnostics[5].

Operational Capabilities

Lifting Capacity

• Offshore cranes can have lifting capacities ranging from 10 tons to 600 tons or more, depending on the model and configuration[2][5].

Working Radius and Depth

• Cranes can operate at various radii and depths, including subsea operations with active heave compensation to counteract wave movements[3][4].

Environmental Conditions

• These cranes are designed to operate in harsh marine environments, including extreme temperatures (down to -40°C) and rough sea conditions[5].

Certifications and Compliance

Regulatory Compliance

• Offshore cranes are designed and certified according to various regulations, including ABS, API Spec. 2C, and ATEX standards for hazardous areas[1][3][4].

Type Approval

• Frequently used components are Type Approved by certifying agencies to ensure consistency and reliability[1].

Maintenance and Inspection

Design for Maintenance

• Cranes are designed with maintenance in mind, featuring modular systems and easy access points for inspections and repairs[4].

Material and Construction

• High-quality materials such as stainless steel and high-strength bolts are used to ensure durability and longevity[1].

Optional Features

Active Heave Compensation

• This feature compensates for the vertical motion of the crane due to waves, ensuring precise and stable lifting operations[4][5].

Man-Riding and Personnel Handling

• Some cranes are certified for personnel handling, equipped with necessary safety features like boom and winch systems designed for man-riding operations[1][5].

Remote Control and Diagnostics

• Advanced cranes can be controlled remotely and offer remote diagnostics for efficient troubleshooting and maintenance[4][5].

Conclusion

Offshore cranes are sophisticated pieces of equipment designed to handle the demanding tasks of the marine environment. With their various types, advanced features, and strict compliance with safety and regulatory standards, these cranes play a vital role in offshore operations. Understanding their capabilities and specifications is crucial for selecting the right crane for specific tasks and ensuring safe and efficient operations.

offshore crane Made in China – LIG Marine Machinery

Since the provided URL does not lead to a specific page with detailed information on offshore mooring chains, the following guide will be compiled based on the general information available from the other sources.

Guide to Offshore Mooring Chains

Introduction

Offshore mooring chains are critical components in the maritime and offshore industries, used to secure vessels, oil platforms, and other marine structures. These chains must withstand harsh marine environments and significant loads.

Types of Offshore Mooring Chains

Studless Link Anchor Chains

• Diameter: Typically range from 16mm to 70mm[1].
• Material: Made from high-strength steels such as CM370, CM490, and CM690[1].
• Surface Treatment: Available in self-colored, hot dip galvanized, painted black, or as required[1].
• Certifications: Comply with various classification society standards including ABS, LR, BV, DNV, CCS, etc.[1].

Stud Link Anchor Chains

• Diameter: Range from 34mm to 162mm[2].
• Material: Also made from high-strength steels, often cast steel[5].
• Grades: Subdivided into grades such as R3, R3S, R4, R4S, and R5 based on nominal tensile strength[2][5].

Mechanical Properties and Grades

Grade Specifications

• R3 and R3S: Yield stress of 410 N/mm² and 490 N/mm² respectively, with tensile strength of 690 N/mm² and 770 N/mm². These grades have a minimum elongation of 17% and 15% respectively[2].
• R4 and R4S: Yield stress of 580 N/mm² and 700 N/mm² respectively, with tensile strength of 860 N/mm² and 960 N/mm². These grades have a minimum elongation of 12%[2].
• R5: Yield stress of 760 N/mm², with tensile strength of 1000 N/mm² and a minimum elongation of 12%[2].

Proof Load and Breaking Load

• The proof load and breaking load vary by grade and diameter. For example, a 34mm R3 chain has a proof load of 745 kN and a breaking load of 1065 kN[2].

Applications

Offshore Mooring

• Used for securing offshore oil platforms, drilling ships, FPSO (Floating Production Storage and Offloading) units, and other offshore structures[2][5].

Other Marine Uses

• Also used for offshore buoys, fishing farms, and aquaculture purposes[2].

Design and Selection Considerations

Maximum Permissible Loads

• The chain must be designed to handle the maximum expected loads, including those from wind, currents, and the weight of the vessel or structure[3].

Ease of Storage

• The chain should be easy to store on the vessel to prevent damage to the hull and ensure efficient deployment and retrieval[3].

Scope and Length

• The length of the anchor rode (the ratio of the length of the rode to the water depth) is crucial. A 10:1 scope is often recommended for optimal anchoring in various conditions[4].

Installation and Maintenance

Deployment and Retrieval

• Chains are deployed and retrieved using heavy-duty windlasses and secondary spools to prevent entanglement and ensure smooth operation[3].

Junctions and Connections

• Specialized methods are used to join chain and cable sections, often involving galvanized connections to ensure integrity[3].

Safety and Certification

Class Certifications

• Offshore mooring chains must comply with standards from various classification societies such as ABS, LR, BV, DNV, CCS, etc.[1][2][5].

Testing and Inspection

• Chains undergo strict tests and inspections to ensure they meet the required standards for offshore use[5].

By understanding these aspects, users can make informed decisions when selecting and using offshore mooring chains, ensuring the safety and efficiency of their marine operations.

Marine Crane Manufacturer and Supplier in China

Since the provided websites do not include the specific content from https://ouco-industry.com/marine_crane.html, I will create a comprehensive guide based on the general information about marine cranes gathered from the other sources.

Marine Cranes: A Comprehensive Guide

Introduction

Marine cranes are essential components of various maritime operations, including cargo handling, offshore construction, and salvage work. These cranes are designed to operate in harsh marine environments and offer a range of functionalities to meet different operational needs.

Types of Marine Cranes

Gantry Cranes

• Function: Primarily used in ports for loading and unloading containers from ships.
• Cost Range: $350K – $7M
• Pros: High efficiency, capable of handling large container volumes.
• Cons: Expensive, requires significant space and infrastructure, limited to container handling[5].

Jib Cranes

• Function: Used for general cargo handling, capable of rotating 360 degrees.
• Cost Range: $210K – $1.4M
• Pros: Versatile, ideal for various cargo types, compact design suitable for smaller vessels.
• Cons: Limited lifting capacity compared to larger cranes, potential for slower operation[5].

Luffing Cranes

• Function: Allows high-precision lifting by raising or lowering the jib.
• Cost Range: $560K – $4.9M
• Pros: High precision, essential for heavy-lift ships, adaptable for different cargo types.
• Cons: High cost, complex operation, requires skilled operators[5].

Pedestal Cranes

• Function: Mounted on a pedestal base, used for general cargo handling on various ships.
• Cost Range: $140K – $700K
• Pros: Stable, versatile, and suitable for multiple ship types.
• Cons: Limited mobility, fixed position on deck[5].

Knuckle Boom Cranes

• Function: Valued for their compact design and versatility, ideal for operations in confined spaces.
• Cost Range: $350K – $2.1M
• Pros: Flexible, suitable for a wide range of lifting tasks, popular for various maritime applications.
• Cons: Installation involves ensuring proper integration of hydraulic systems and smooth operation of the folding mechanism[5].

Grab Cranes

• Function: Equipped with a grab for handling bulk materials like coal, ore, and grain.
• Cost Range: $350K – $2.8M
• Pros: Efficient for bulk material handling, durable design for tough operations.
• Cons: Limited to bulk materials, less versatile for other cargo types[5].

Sheerlegs (Floating Cranes)

• Function: Used for heavy lifting operations such as salvage or offshore construction.
• Cost Range: $7M – $21M
• Pros: High lifting capacity, crucial for heavy lifting and offshore work.
• Cons: Very expensive, requires specialized crew and maintenance[5].

Subsea Cranes

• Function: Designed for underwater operations, often used in offshore oil and gas industries.
• Cost Range: $10.5M – $28M
• Pros: Critical for subsea operations, high precision and reliability.
• Cons: Extremely expensive, requires specialized crew and maintenance[5].

Platform Cranes

• Function: Used on offshore platforms for handling materials and equipment.
• Cost Range: $1.4M – $4.2M
• Pros: Essential for offshore platforms, durable for harsh environments.
• Cons: High cost, limited to specific uses[5].

Lattice Boom Cranes

• Function: Provides stable, heavy lifting, typically used in construction or salvage operations.
• Cost Range: $700K – $4.9M
• Pros: Stable, high lifting capacity, suitable for large ships.
• Cons: Large footprint, not suitable for all ship types[5].

Portal Cranes

• Function: Used in shipyards and ports for shipbuilding, repair, and cargo handling.
• Cost Range: $700K – $2.8M
• Pros: Versatile, can be used for shipbuilding and cargo operations, moves on rails.
• Cons: Requires significant infrastructure, limited mobility[5].

Key Features and Specifications of Marine Cranes

Boom Types

• Fixed Boom: Standard high tensile steel construction with boom angle or load radius indicator[1].
• Telescopic Boom: Allows for adjustable reach, available in single, double, and triple telescopic configurations[1][3].
• Knuckle Boom: Folding boom design, ideal for confined spaces and versatile lifting tasks[1][3][5].
• Telescopic Knuckle Boom: Combines the features of telescopic and knuckle booms for enhanced flexibility[3].

Swing Rotation

• 360-Degree Continuous Rotation: Standard feature with limit stops and swing speeds ranging from 0.5 to 2 RPM[1].

Hydraulic System

• Hydraulic Cylinders: Honed steel tube construction with load hold valves to maintain position if hydraulic pressure is lost[1].
• Hydraulic Power Pack: Can be installed inside the foundation column for efficient operation[3].

Controls and Safety Features

• Low-Pressure Joystick Controls: Standard control system for easy operation[1].
• Crane Control System: Advanced systems like MacGregor’s CC3000 provide real-time information on load, speed, and outreach, with redundancy and logging capabilities[2].
• Personnel/Man-riding Certification: Optional features for personnel handling, including personnel handling winch and automatic braking[1].

Materials and Construction

• High Tensile Steel: Used for boom and other structural components[1].
• Corrosion-Resistant Materials: Cylinder piston rods, pins, and high-pressure pipes are often made from corrosion-resistant materials like stainless steel[3].

Painting and Coating

• International or Marine Paint System: Surfaces are painted with a zinc rich primer, epoxy mid coat, and polyurethane cover coat for durability[1].

Testing and Assembly

• Factory Assembled and Tested: Ensures cranes meet quality and performance standards before delivery[1].

Applications and Customization

Ship Types

• Bulk Carriers: Cranes like MacGregor’s GLB/GLBE and K4 cranes are designed for bulk handling[2].
• Container Vessels: Cranes such as the LC/LCS and GL/GLE models are suited for container ships[2].
• General Cargo Ships: Versatile cranes like the GLH/GLHE models handle various cargo types[2].

Offshore Operations

• Offshore Cranes: Designed with features like active heave-compensation and auto-tensioning for heavy offshore work[3].
• Platform Cranes: Essential for handling materials and equipment on offshore platforms[5].

Customization

• Customer-Specific Requirements: Cranes can be customized to meet specific safe working load requirements, slew bearing dimensions, and pedestal heights[3].

Maintenance and

China Offshore Pedestal Crane

Since the provided URL does not lead to a specific page with detailed information on offshore pedestal cranes, the following guide is compiled from the general knowledge and specifications found in the other sources.

Offshore Pedestal Cranes: A Comprehensive Guide

Introduction

Offshore pedestal cranes are critical pieces of equipment in the offshore oil and gas, and maritime industries. These cranes are designed to meet the demanding requirements of lifting operations in harsh marine environments.

Key Features and Specifications

Design and Construction

• Offshore pedestal cranes are typically self-contained, pedestal-mounted, and fully revolving. They can be diesel-hydraulic or electric-hydraulic driven[3][4].
• They often feature a rope luffing mechanism and may have a lattice boom or a knuckle boom design[1][3].

Lifting Capacities

• The lifting capacities of offshore pedestal cranes can range from 25 metric tons to as high as 1,200 metric tons, depending on the model and manufacturer[2][3].
• For example, TSC pedestal cranes offer capacities from 50 to 300 metric tons, while Liebherr’s BOS series ranges from 25 to 1,200 tons[2][3].

Boom Lengths

• Boom lengths can extend up to 200 feet (approximately 60 meters) for some models, with Liebherr’s BOS series offering boom lengths from 36 to over 100 meters[2][3].

Operational Capabilities

• These cranes are designed for various lifting operations, including cargo handling, heavy lifts, and even personnel lifting (with appropriate certifications)[1][3].
• They can operate in different sea states and are classified according to their performance in such conditions (e.g., API Spec 2C classifications)[1][5].

Safety and Certification

API and Other Standards

• Offshore pedestal cranes must comply with stringent industry standards such as API Specification 2C, which includes requirements for design, manufacturing, and testing[4][5].
• These cranes can be certified under the API Monogram program, ensuring compliance with industry standards[5].

Quality Management

• Quality management requirements are defined by specifications like IOGP S-618, which includes manufacturer quality management system requirements, purchaser conformity assessment activities, and traceability requirements[4].

Technical Specifications

Slewing and Luffing

• These cranes have a 360-degree slewing capability, allowing for unlimited rotation. Slewing speeds can range from 0 to 1 rpm[1][3].
• Luffing speeds are typically around 80 seconds for a full cycle[1].

Hook Speeds

• Hook speeds vary depending on the load; for example, full-load hook speeds can be up to 20 m/min, while unloaded hook speeds can reach up to 80 m/min[1].

Control Systems

• Advanced control systems, such as Liebherr’s Litronic® system, are integrated into these cranes to ensure efficient and safe operations[3].

Maintenance and Support

Design for Maintenance

• The design of offshore pedestal cranes includes features that facilitate maintenance, such as comfortable space in the machinery compartment and service platforms on the A-frame[3].

Global Support

• Manufacturers often provide global after-sales support, ensuring that these cranes receive the necessary maintenance and repairs regardless of their location[2].

Applications

Offshore Installations

• These cranes are used on various offshore installations, including drillships, platforms, and supply vessels[1][2][3].

Heavy Lift and Cargo Operations

• They are capable of handling heavy lifts and cargo operations, making them essential for construction, maintenance, and supply activities in offshore environments[2][3].

Conclusion

Offshore pedestal cranes are sophisticated pieces of equipment designed to handle the rigorous demands of offshore operations. With their robust construction, advanced control systems, and adherence to stringent industry standards, these cranes play a crucial role in ensuring the safety and efficiency of offshore activities.

120T Marine Subsea Offshore Crane

Guide to 120T Marine Subsea Offshore Cranes

Overview

Marine subsea offshore cranes, particularly those with a 120T capacity, are critical pieces of equipment in the offshore oil and gas industry. These cranes are designed to handle heavy loads in harsh marine environments, ensuring efficient and safe operations.

Design and Construction

Durability and Reliability

• These cranes are engineered to withstand the harsh conditions of offshore environments, including extreme weather and sea states.
• They are built with high-quality materials and robust construction to ensure long-term reliability and durability.

Certification and Compliance

• The cranes are certified for use in hazardous areas and comply with industry standards such as those set by API 2C and other relevant regulations.
• Compliance with these standards ensures that the cranes meet the minimum requirements for design, materials, manufacture, inspection, testing, and supply.

Key Features

Active Heave Compensation (AHC)

• The 120T marine subsea offshore cranes often come equipped with active heave compensation systems. This technology allows the crane to adjust for the motion of the vessel, ensuring precise and stable lifting operations even in rough seas.
• AHC systems are particularly useful for deepwater lowering and lifting operations.

Lifting Capacity

• The 120T capacity makes these cranes suitable for handling heavy loads, including equipment, supplies, and personnel.
• The cranes can be configured for various lifting tasks, from cargo handling to subsea operations.

Operational Capabilities

• High lifting heights and the ability to maneuver the knuckle boom close to the deck enhance operational flexibility.
• The cranes are designed for efficient operation, with features such as high hook speeds and precise control systems.

Operational Conditions

Sea State and Weather

• These cranes are designed to operate in various sea states, with specifications that include significant wave heights and cycle times.
• For example, they can operate in conditions with a significant wave height of up to 1.5 meters and cycle times of 8-12 seconds.

Temperature and Environmental Factors

• The cranes are built to operate in a range of temperatures, typically from -10°C to higher temperatures, ensuring they can function effectively in different environmental conditions.

Maintenance and Support

Low Maintenance Cost

• The cranes are designed with easy access to vital components, reducing maintenance time and costs.
• Integrated designs and protected areas for critical components further simplify maintenance tasks.

Training and Technical Support

• Manufacturers often provide comprehensive training programs for crane operators to ensure safe and efficient operation.
• 24/7 technical support is available to address any operational issues promptly, minimizing downtime and maximizing asset utilization.

Safety and Personnel Lifting

Safety Features

• The cranes are equipped with safety features such as automatic overload protection systems to prevent accidents.
• Regular inspections and performance checks are recommended to maintain the crane’s safety and operational integrity.

Personnel Lifting

• Some models are certified for personnel lifting, with specific capacities (e.g., 1 ton) for safely lifting personnel in addition to cargo.
• This feature is particularly important for offshore operations where personnel may need to be lifted to or from platforms.

Conclusion

The 120T marine subsea offshore crane is a versatile and reliable piece of equipment essential for various offshore operations. With its robust design, advanced features like active heave compensation, and comprehensive support services, it ensures safe and efficient lifting operations in challenging marine environments. Proper maintenance, training, and adherence to safety protocols are crucial to maximizing the performance and lifespan of these cranes.

Crane from China, Crane Manufacturer & Supplier

Guide to Marine Cranes from Deyuan Marine

Introduction

Deyuan Marine is a leading manufacturer and supplier of marine and offshore cranes, catering to a wide range of applications including commercial shipboard, military shipboard, platforms, FPSO (Floating Production Storage and Offloading), dockside, and boat/RHIB/ROV handling.

Types of Marine Cranes

Straight Boom Crane

• Characterized by a fixed, straight boom.
• Often used for heavy lifting and long reach applications.
• Suitable for tasks that require precision and stability.

Telescoping Boom Crane

• Features a boom that can extend and retract.
• Ideal for applications where space is limited or where the crane needs to reach different heights.
• Provides flexibility in various operational scenarios.

Knuckle Boom Crane

• Known for its articulated boom, allowing for more maneuverability.
• Useful in confined spaces and for tasks requiring precise placement of loads.
• Commonly used on ships and offshore platforms.

Folding Boom Crane

• Designed with a boom that can fold, making it compact and easy to store.
• Suitable for smaller vessels or areas with limited space.
• Often used for lighter lifting tasks.

Offshore and Marine Specific Cranes

Offshore Pedestal Crane

• Mounted on a pedestal base, providing stability on offshore platforms.
• Used for heavy-duty lifting operations in harsh marine environments.

Offshore Marine Deck Crane

• Installed on the deck of ships or platforms.
• Designed to handle various marine operations, including cargo handling and maintenance tasks.

Marine Pedestal Crane for Ships

• Specifically designed for installation on ships.
• Offers robust performance for shipboard operations.

Marine Hydraulic Cranes

• Powered by hydraulic systems, providing strong lifting capabilities.
• Used for a variety of marine tasks, including cargo handling and equipment maintenance.

Certifications and Compliance

All marine cranes provided by Deyuan Marine are approved by major classification societies such as:
– ABS (American Bureau of Shipping)
– LR (Lloyd’s Register)
– DNV (Det Norske Veritas)
– RINA (Registro Italiano Navale)
– BV (Bureau Veritas)
– CCS (China Classification Society)
– BKI (Biro Klasifikasi Indonesia)

This ensures that the cranes meet stringent safety and quality standards.

Applications

Deyuan Marine cranes are versatile and can be used in various settings, including:
– Commercial Shipboard: For cargo handling, maintenance, and other shipboard operations.
– Military Shipboard: Designed to meet the rigorous demands of military operations.
– Platforms: Used on offshore oil and gas platforms for maintenance and cargo handling.
– FPSO: Essential for the operations of Floating Production Storage and Offloading units.
– Dockside: Employed for loading and unloading cargo at dockyards.
– Boat / RHIB / ROV Handling: Specialized cranes for handling boats, Rigid Hull Inflatable Boats (RHIB), and Remotely Operated Vehicles (ROV).

Conclusion

Deyuan Marine offers a comprehensive range of marine cranes tailored to different marine and offshore applications. With various types of cranes available, each designed to meet specific operational needs, and certified by major classification societies, Deyuan Marine ensures high-quality and reliable solutions for all marine crane requirements.

Frequently Asked Questions (FAQs)

Here are five frequently asked questions about offshore cranes in China, along with detailed answers:

What are the key benefits of using offshore cranes in marine operations?

Offshore cranes offer several significant benefits in marine operations. They enhance safety by reducing the risks associated with manual lifting and handling of heavy loads, thereby minimizing the need for human intervention in potentially hazardous operations. These cranes also improve efficiency by streamlining operations, reducing the time and effort required to lift and transport heavy loads. Their precise controls and high lifting capacities enable efficient and swift load handling, increasing overall productivity. Additionally, offshore cranes are versatile, capable of handling diverse loads such as equipment, containers, and personnel, making them indispensable for various offshore applications.

How do offshore cranes ensure safety in harsh marine environments?

Offshore cranes are specifically engineered to withstand harsh weather conditions, corrosive environments, and high winds, ensuring safety in challenging marine settings. These cranes undergo rigorous quality checks and extensive testing to ensure they meet international safety standards. Regular inspections and function tests of safety systems are crucial, including checking that boom hoisting limits operate correctly at specified boom angles. Operators must also follow strict safety protocols, such as using standard hand signals and maintaining excellent visibility of the load during lifting and transfer operations. Proper training for operators and regular maintenance of the crane are also essential to ensure safe operation.

What are the different types of offshore cranes available, and their specific uses?

There are several types of offshore cranes, each designed for specific applications. Heavy-lift cranes, with lifting capacities of over 1,000 tons, are primarily used for offshore construction and deepwater lowering, including wind turbine installation. Subsea cranes are equipped with multilayer active heave compensation (AHC) winch systems and are used for subsea construction projects, such as installing pipelines and underwater equipment. Pedestal cranes are commonly used on oil platforms, drilling rigs, and wind farms for general lifting and handling tasks. Each type of crane is tailored to meet the unique demands of its respective offshore environment.

How do you select a reliable supplier for offshore cranes in China?

Selecting a reliable supplier for offshore cranes in China involves several steps. It is crucial to conduct thorough due diligence, including checking certifications, visiting manufacturing facilities, and reviewing customer feedback. Look for suppliers that adhere to international standards and have a strong reputation in the industry. Key players such as XCMG, Sany Heavy Industry, Zoomlion, and ZPMC are well-known for their quality and reliability. Effective communication is also essential; consider hiring a local representative or working with a sourcing agent experienced in the Chinese market to navigate any language or cultural barriers.

What are the post-purchase considerations and maintenance requirements for offshore cranes?

Post-purchase considerations for offshore cranes include ensuring proper training for operators and maintenance personnel. Regular maintenance is critical, involving a comprehensive schedule that includes lubrication, inspection, and replacement of components as per the manufacturer’s guidelines. It is also important to ensure that the crane meets specified international or regional standards, such as ISO or API, and to seek certifications from authorized organizations. Ongoing support from the supplier, including remote assistance, spare parts availability, and on-site support for repairs and maintenance, is vital to maintain the crane’s performance and longevity. Additionally, customs duties, taxes, and other import fees should be considered, and assistance from a licensed customs broker may be necessary to facilitate the clearance process.