What is the main advantage of a knuckle boom crane over a telescopic boom crane for offshore use?

The primary advantage is its flexibility and compact stowage. The articulated arm design allows it to fold into a very small footprint (often just 2-3 meters high), which is crucial for saving space on crowded decks. It can also maneuver around obstacles like piping and superstructures, making it ideal for complex offshore platforms and vessels like chemical tankers and Ro-Ro ships . In contrast, telescopic booms are better for straight-line, high-capacity lifts in open areas .

Q2: How do I determine the right lifting capacity and working radius for my vessel?

Start by identifying the most demanding lifting scenario for your operations. Measure the required horizontal reach (working radius) to cover all cargo holds or the vessel’s side, and the vertical reach (lifting height) to reach the bottom of holds or the top of stacks. The principle is to choose the minimum specifications that cover all your working areas, as over-specifying increases cost, weight, and stability challenges . The maximum lifting capacity decreases as the working radius increases—always consult the crane's load chart .

Q3: What are the common maintenance issues for offshore knuckle boom cranes?

The most frequent issues involve the hydraulic system. Common problems include fluid leakage (from seals or damaged hoses), insufficient fluid levels, loss of power, and fluid contamination. Electrical malfunctions in the control system, limit switches, or motors are also common. Regular inspections and preventive maintenance, such as checking hydraulic connections and filters, are essential to minimize downtime .

Marine Knuckle Boom Crane

Knuckle Boom Marine Crane Offshore

Knuckle Boom Marine Crane Offshore3.webp

Knuckle Boom Marine Crane Offshores.webp

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For customized products, please fill out information and submit the form.

Capacity:

2t, 3t, 5t, 10t (customizable)

Lifting Height:

(customizable)

Voltage/Hertz:

(customizable)

Working Class:

Span:

10~20m (customizable)

Apply: Knuckle Boom Marine Crane Offshore Is Well Used In Different Kinds Of Docks

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Introduction

Technical Data

Application

Features

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PRODUCT INTRODUCTION

The Knuckle Boom Marine Crane, also known as an articulated or folding boom crane, is a specialized lifting solution designed for offshore and marine environments. Unlike conventional straight‑boom cranes, its hinged boom structure provides exceptional flexibility, allowing the crane to fold into a compact footprint when not in use while delivering superior reach and maneuverability in confined spaces.

TECHNICAL DATA

Parameter	Specification	Parameter	Specification
Core Components	PLC, Engine, Bearing, Gearbox, Motor, Gear, other	Video outgoing-inspection	Provided
Warranty	1 Year	Rated Loading Capacity	400kg, 500kg, 3ton, 5ton, 20ton
Rated Lifting Moment	Loading Capacity	Max. Lifting Height	120M
Span	12~35m	Weight (KG)	5680
Place of Origin	Henan, China	Application	Marine/shipyard etc
Main Electrical Part	Siemens or Schneider	Slewing Angle(degree)	360/270
Color	Customized	Product type	Offshore equipments
Power	(customizable)	Certification	CE ISO GOST

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APPLICATION

1. Offshore Platform Supply & Logistics Cargo Transfer: Lifting pipes, drilling equipment, containers, and consumables from supply vessels to fixed platforms or floating installations with precise load control.Deck Handling: Moving heavy equipment across the platform deck, utilizing the knuckle boom’s ability to reach around obstacles and into tight corners.Personnel Basket Transfer: Safely transporting personnel via specialized baskets between vessels and platforms, with smooth hydraulic controls to minimize swinging.

2. Floating Production Storage & Offloading (FPSO) Operations Equipment Maintenance: Lifting pumps, valves, and subsea components from the FPSO deck to workboats or directly to the waterline for servicing.Mooring Operations: Assisting in the deployment and retrieval of mooring lines, chains, and anchors with the crane’s compact stowage and high‑precision control.Subsea Intervention: Supporting remotely operated vehicle (ROV) launches and recovery, as well as handling of subsea modules and umbilical lines.

3. Drilling Rigs & Drill Ships Riser & BOP Handling: Lifting blowout preventers (BOPs), riser joints, and wellhead equipment during drilling operations, utilizing the crane’s capacity and reach.Deck Load Management: Organizing tubular goods, drill collars, and casing stocks across the rig’s pipe deck with minimal obstruction.\r\nCrane‑to‑Crane Transfer: Coordinating lifts between multiple knuckle boom cranes for complex installations where precise positioning is required.

FEATURES

Superior Flexibility: The articulated knuckle boom allows lifting in confined spaces, below horizontal, and around obstacles—capabilities unmatched by straight‑boom cranes.

Compact Stowage: Folding boom design minimizes deck occupancy, improving vessel safety and allowing multiple cranes to be installed without interference.

Marine‑Grade Durability: Built with high‑tensile steel, hot‑dip galvanized or epoxy‑coated components, and IP‑rated electrical enclosures to withstand salt spray, humidity, and extreme temperatures.