The 6.3 Ton Knuckle Boom Marine Crane is a heavy‑duty, corrosion‑resistant lifting solution specially designed for marine applications. With a compact knuckle boom structure, high‑tensile marine‑grade steel construction and stable hydraulic system, it provides strong lifting capacity, flexible operation and high safety for vessel deck handling, offshore engineering, port logistics and fishery operations. It performs reliably in harsh saltwater, humid and offshore working environments.
6.3 Ton Knuckle Boom Marine Crane
Product Advantage
Lightweight Design with Exceptional Strength
Boasting a 6.3-ton lifting capacity, the 6.3 Ton Knuckle Boom Marine Crane stands out as a compact, high-strength solution tailored for harsh marine environments. It can be stably mounted on various vessel decks, offshore workboats and medium-sized marine platforms, minimizing deck space occupation and reducing extra load on the hull. Its optimized weight-to-strength ratio, combined with marine-grade anti-corrosion treatment, achieves a perfect balance between compact structure and reliable heavy-duty performance, guaranteeing stable lifting operations even in salt-spray, humid and wave-impacted conditions without sacrificing durability.
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Highly Customizable for Diverse Marine Tasks
This marine crane offers flexible customization options, including optional marine-grade heavy-duty lifting winches, anti-corrosion hydraulic clamps, and specialized marine attachments (such as fish cage lifting tools and offshore equipment hangers). Such versatility allows operators to handle marine supplies, steel pipes, offshore mechanical parts, fishing gear and irregular-shaped marine cargo with ease, tailoring the equipment to the precise needs of vessel deck replenishment, offshore engineering, port auxiliary operations and large-scale aquaculture projects.
Precise Maneuverability with Compact Multi-Section Boom
Constructed from marine-grade high-tensile anti-corrosion steel, the compact multi-section telescopic knuckle boom delivers impressive outreach and strong bending resistance within limited deck space. It enables accurate load positioning even in narrow vessel decks, crowded offshore platforms, or confined port berthing areas, ensuring safe and efficient operation in complex marine working conditions (including moderate wave sway and narrow operational zones).
Advanced Safety Features for Reliable Marine Lifts
Equipped with built-in overload protection devices, marine-grade safety interlocks and optional torque limiters, the 6.3 Ton Knuckle Boom Marine Crane effectively prevents overload risks and marine operational accidents. Paired with four sturdy marine-type hydraulic outriggers (or deck-fixed anti-slip supports) and a high-precision marine winch with emergency braking function, these safety features ensure stable and secure lifting performance, even in uneven deck surfaces, wave-impacted environments or high-humidity marine conditions.
Detailed Description of Technical Parameters
Performance and Operational Specs
The 6.3 Ton Knuckle Boom Marine Crane is fitted with a specialized marine hydraulic system featuring optimized pressure and flow settings, enabling smooth, responsive, and corrosion-resistant control. Its slewing mechanism provides a wide rotation range (up to 360° continuous rotation), allowing full coverage of the deck and offshore working area without frequent vessel repositioning. The integrated marine-grade winch system ensures gentle and precise handling of heavy or fragile marine loads, making it ideal for lifting offshore equipment, precision mechanical parts and irregularly shaped marine cargo.
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Structural and Durability Features
Crafted from high-quality marine-grade high-tensile anti-corrosion steel, the crane’s boom and frame are engineered to withstand prolonged heavy-duty use in harsh marine environments (resistant to salt corrosion, humidity and marine biological adhesion). It incorporates a reliable marine-type friction brake and disc spring mechanism, ensuring quiet, stable, and low-wear performance that extends the equipment’s service life under long-term vibration and salt-spray conditions. The crane’s lightweight and compact design enhances overall deck mobility, supporting quick deployment across multiple marine job sites such as transport vessels, offshore platforms and port terminals.
Product Uses
Vessel Deck Replenishment and Marine Logistics
The 6.3 Ton Knuckle Boom Marine Crane is specifically designed for lifting medium-sized marine materials, including vessel supplies, mechanical spare parts, steel pipes, and prefabricated offshore components. Its compact size and flexible maneuverability make it perfect for narrow vessel decks, coastal transport ships, and offshore supply vessels, effectively improving the efficiency of marine logistics, deck replenishment and cargo turnover in offshore and coastal operations.
Offshore Engineering and Port Auxiliary Operations
Ideal for offshore platforms, small and medium-sized ports, and coastal engineering projects, this crane efficiently handles the loading and unloading of offshore maintenance equipment, construction components, and port auxiliary cargo. Its marine-grade anti-corrosion structure and stable lifting performance ensure reliable operation in offshore and coastal environments, eliminating the need for large fixed marine cranes in some scenarios and significantly cutting down the time and cost of offshore and port operations.
Large-Scale Fishery and Aquaculture Applications
In offshore fishing vessels and large-scale aquaculture platforms, the 6.3 Ton Knuckle Boom Marine Crane safely lifts heavy fishing gear, large aquaculture cages, feed supplies, and harvested aquatic products. Its long outreach and flexible boom articulation allow operators to work around vessel superstructures and aquaculture facilities, making it a versatile tool for equipment installation, daily feeding, and cargo lifting in large-scale marine fishery and aquaculture settings.
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As an integrated factory and trading company, SKPL-LIFT provides long-term technical & after-sales support, one-stop procurement and technical solutions to ensure your smooth operation. We welcome you to visit our factory!
Yes we do. However, since inventory is subject to availability, please contact our sales consultant for confirmation.
Usually, delivery is within 30 working days after receiving the deposit. For standard products, we always have stock and“Can deliver within 15 working days. However, customized products will require more time, with specific dates depending on your order requirements.
We provide lifelong online technical support, a 1-year product warranty, and paid extended warranty options.
Of course! You are very welcome to visit! Please feel free to contact us in advance to schedule your factory visit.
