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Marine knuckle boom crane, max. capacity 60t (Technical supply specification)

1. General Information (Operating Conditions)

The marine knuckle boom crane operates reliably under marine environmental conditions including:

  • Design ambient air temperature: +45°C with 80% relative humidity in summer; -40°C with wind speed up to 25 m/s and 85% relative humidity in winter.
  • Water temperature: from +32°C down to -2°C respectively.
  • Shipboard vibration.
  • Intermittent sea water splashing on components.
  • Permanent heel angle: up to 5° port/starboard.
  • Permanent trim angle: up to 2° bow/stern.

2. Purpose

The marine knuckle boom crane is designed for installation on various vessels and ships to perform lifting operations, including:

  • Loading and discharging general cargo.
  • Loading ship stores and provisions.
  • Operation at static vessel heel angles up to 5º port or starboard and trim angles up to 2º bow or stern at minimum vessel draft.

Personnel lifting capability provides for:

  • Loading and discharging cargo up to 60t at 11m outreach.
  • Deploying external search and rescue (SAR) equipment up to 5t to a distressed vessel.
  • Container handling operations.
  • Recovering survivors from the water surface using a rescue net.
  • Subsea lifting operations to recover loads and underwater equipment to the deck (subsea operations support excluded).
  • Personnel lifting operations.
Marine knuckle boom crane max. capacity 60t general arrangement side view
Marine knuckle boom crane max. capacity 60t general arrangement side view

About

Marine Knuckle Boom Crane: Reliable Marine Operation Under Any Conditions

Modern vessels require equipment combining power, precision, and reliability. The marine knuckle boom crane fulfills a wide range of operational requirements: lifting diverse cargo, executing personnel lifting, and supporting search and rescue operations as well as equipment transit under demanding marine environmental conditions.

Demanding Marine Operating Environment

Shipboard equipment encounters unique operational loads: continuous vibration, vessel heel and trim, and exposure to sea water and wind. Cranes not specifically designed for this environment risk operational failure. The marine knuckle boom crane from Izhora Hydrosystems LLC is engineered precisely for these factors. It maintains structural and operational integrity under extreme loads, ensuring the safety of personnel and equipment.

Operational Applications

In field operations, the crane is utilized for diverse tasks:

  • Cargo Handling: On supply vessels, the crane handles heavy containers and provisions with precise deck spotting, compensating for vessel heel and shipboard vibration.
  • Search and Rescue (SAR) Operations: Utilizing rescue nets, the crane provides controlled recovery of survivors from the water surface, minimizing injury risk and equipment damage.
  • Specialized Equipment Handling: Research expeditions utilize the crane for recovering instruments from the sea surface or deploying them from the deck, ensuring safe handling of sensitive equipment.

In all these operational scenarios, the crane ensures high precision and smooth movements, allowing the crew to focus on core operations rather than equipment monitoring.

Engineering Design and Structural Reliability

Structurally, the knuckle boom crane features a telescopic boom system, providing adaptability to varying working radii and operational constraints. The hydraulic system ensures smooth movements and precise control, minimizing vibration and dynamic loads on the vessel structure.

All mechanisms are integrated into a self-contained system, simplifying maintenance and reducing the number of onboard interfaces. Consequently, the equipment maintains high operational reliability during long-term service in harsh climatic and marine environments.

Versatility and Operation

The crane is designed to operate at significant vessel heel and trim angles, ensuring high versatility across various marine operations. It provides safe lifting of cargo, equipment, and personnel, expanding vessel capability and increasing crew operational efficiency.

Engineered with corrosion protection against sea water and wind loads, the crane is suitable for worldwide operation from arctic to tropical latitudes, ensuring consistent performance under extreme conditions.

The Role of Izhora Hydrosystems LLC

Izhora Hydrosystems LLC develops marine knuckle boom cranes optimized for demanding operational conditions. Our engineers implement advanced solutions in hydraulics and boom design, manufacturing reliable and safe equipment for lifting and search and rescue (SAR) operations.

The application of domestic technologies ensures independence from imported equipment for operators, enhancing marine logistics resilience and crew safety. Marine cranes by Izhora Hydrosystems combine performance, reliability, and innovative engineering, making marine operations more efficient, safe, and predictable.


3. Scope of Supply

3.1 Marine Knuckle Boom Crane 15t x 38m, 60t x 11m

3.1.1 Equipment Composition

ComponentQuantity
Housing assembly1 pc.
Boom assembly with telescopic sections1 pc.
Boom hydraulic cylinders1 set
Telescopic hydraulic cylinders1 set
Winch1 pc.
Ladder1 set
Hook block1 pc.
Control cabin1 pc.
Machinery room1 pc.
Maintenance platforms installation1 pc.
Handrails installation1 pc.
Boom rest1 pc.
Spare parts, tools, and accessories (STAs) kit1 set
Crane hydraulic equipment installation1 pc.
Crane electrical equipment installation1 pc.
Oil filling pump unit1 pc.
Marine knuckle boom crane max. capacity 60t general arrangement top view
Marine knuckle boom crane max. capacity 60t general arrangement top view

3.1.2 Main Technical Data

ParameterValue
Safe Working Load (SWL) at maximum outreach15 t
Safe Working Load (SWL) at minimum outreach60 t
Minimum outreach11 m
Maximum outreach38 m
Hoisting speed10 m/min
Enclosure class for outdoor electrical equipmentIP56
Sea state, max.4
Wind load (load above water surface), up to400 Pa
Hoisting depth (within crane rated capacity)100 m
Luffing time (boom hoisting)100 s
Hoisting speed for personnel lifting0.27 m/s
Slewing speed (single motion)0.7 rpm
Slewing angle360°
Crane controlFrom control cabin or via wireless control
Total crane weight (excluding hydraulic fluid and pedestal), max.100 t
Power supplyAC, 50 Hz, 380 V
Installed electric motor power (excluding emergency pump motor)325 kW
Installed emergency pump electric motor power45 kW
Classification society compliance (RMRS/marine register)Yes
Anti-pendulum systemIncluded
Operating conditions in stowed positionAmbient air temperature from -40°C to +45°C, vessel heel up to 15° to any side, vessel trim up to 5° bow/stern, wind pressure max. 2000 Pa, shipboard vibration
Dynamic load spatial stabilization systemIncluded
ExecutionCargo and personnel lifting

3.1.3 Spare Parts, Tools, and Accessories (STAs) Kit

According to manufacturer standard for 3 years of operation.

3.1.4 Documentation

DocumentQuantity
Product data sheet (Passport)1
Installation, commissioning, and adjustment instructions1
Operating manual1
Onboard testing program and procedure1
Factory acceptance test (FAT) report1
List of spare parts, tools, and accessories1

3.1.5 Certificates

RMRS Certificate (RS Certificate) Form 6.5.30, Gosudarstvenny Tekhnichesky Nadzor (State Technical Supervision) of the Russian Navy acceptance — 1 pc.


Equipment delivery with military acceptance (VP) is available upon request.


4. Additional Requirements

  • All electrical equipment features enclosure class IP56.
  • Coating: coating system and color shall be subject to the Customer’s approval.
  • Preservation coatings ensure an indoor storage life of 12–18 months.
  • Hydraulic fluid: AUP grade.
  • Fluid cleanliness class according to GOST 17216-71: min. class 12.
  • Power supply cables are equipped with mating connectors.
  • Equipment is delivered in packaging suitable for handling by both crane and forklift, road transport, and outdoor storage under shelter.

The marine knuckle boom crane is delivered with an extract from the registry of Russian industrial products (Decree No. 719 of the Ministry of Industry and Trade of the Russian Federation).


5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

5 years from the date of shipment unless otherwise specified in the contract.


Contacts

  • Phone: +7 (812) 339-61-68
  • Email: contact@i-hydro.tech