Knuckle Boom Telescopic Crane | Multi-Functional Lifting System for Offshore & Industrial Applications

DNV 2.22/API 2C Certified with Active Heave Compensation & 360° Continuous Rotation

Brand: Henan Hengkun Crane Co., Ltd.
Applications: Offshore supply vessels, wind farm installation ships, salvage operations, and marine platforms requiring highly flexible, multi-functional lifting solutions for cargo handling, subsea equipment deployment, and personnel transfers in harsh maritime environments.

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Product Overview

Henan Hengkun’s Knuckle Boom Telescopic Crane delivers unparalleled versatility through its articulated boom + telescopic extension design, achieving 150% greater outreach-to-stowed-length ratio vs conventional cranes. Engineered for platform supply, wind turbine installation, and congested ports, capacities range from 50-200T with ±1.5m wave compensation.

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Marine Engineering Superiority

1. Hybrid Boom System

▶ 3-segment knuckle (75° articulation) + 4-stage telescopic arm
▶ ±2mm extension accuracy (ISO 4301 verified)
▶ 18.7m stowed length / 52m max outreach

2. Extreme Wave Compensation

▶ Active Heave Comp (AHC): ±2.5m @ Hs=4m (ISO 18639 Class B)

▶ Passive Heave Comp (PHC): ±1.8m @ Hs=3m

▶ 97% load stability in Beaufort 8 conditions

3. Corrosion Defense System
▶ Duplex coating: 150μm arc-sprayed ZnAl + 100μm epoxy (ISO 12944 C5-M)
▶ AISI 316L stainless hydraulic rods
▶ IP68-rated slew bearings (EN 60034-5)

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Technical Specifications

Certification Suite
▸ Structural: DNV-ST-0378 / ABS 150A1
▸ Safety: API Spec 2C (7th Ed) / EN 13852-1
▸ Environmental: IMO Tier III compliant

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Operational Matrix

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Case Study: Arabian Gulf Wind Farm

Challenge
Install 12MW turbines in 3m significant wave height

Solution

• 3× KBTC-120T cranes with:
  → DNV-OS-C502 winterization package
  → 40T motion-compensated personnel basket
  → Fiber Bragg grating stress monitoring

Result
▸ 40% faster component positioning
▸ Zero downtime in 8m/s current
▸ 2.5° max dynamic load angle

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Critical Safety Systems

► LOAD MANAGEMENT:  
   • Triple redundant SWL monitoring (±0.5%)  
   • AI anti-swing (95% oscillation reduction)  
   • Two-block prevention (laser + mechanical)  

► SURVIVAL SYSTEMS:  
   → Water-cooled disc brakes (DNV Type Approval)  
   → Emergency manual retrieval (API 9A)  
   → DP-2 dynamic positioning interface  

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Offshore Packages

Environment	Configuration	Certification
Arctic	-45°C hydraulic fluid + thermal jackets	DNV Polar Class
Tropical	Salt fog filtration + 55°C cooling	ABS Tropical Rating
Hazardous Zone	ATEX Zone 2 packages	IECEx Ex d IIC T4

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Maintenance Engineering

System	Innovation	MTBF
Hydraulics	Self-cleaning 5μ filters	12,000h
Electronics	Conformal coating (MIL-I-46058)	60,000h
Wire Ropes	Rotation-resistant 35x7 IWRC	2,500 cycles
Bearings	Sealed-for-life lubrication	100,000h

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Why Choose Us?
As a leading Chinese manufacturer, we deliver marine-grade lifting solutions that blend European engineering precision with rugged offshore reliability. Our Knuckle Boom Telescopic Cranes are rigorously tested for performance in extreme conditions, ensuring seamless integration into marine logistics, wind energy, and oil/gas operations.

Request a Custom Marine Solution – Master offshore challenges with unmatched flexibility and power!