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Marine boom crane, SWL 20 t (Technical supply specification)


1. General Information (Operating Conditions)

Operating conditions during crane design operations:

  • Ambient air temperature: -40 °C (at 85% relative humidity) to +45 °C (at 60% relative humidity).
  • Permanent heel: up to 5° to any side.
  • Permanent trim: up to 2° forward or aft.
  • Sea state: up to 3 code figures.
  • Wind pressure: max. 400 Pa.

Environmental conditions in stowed position:

  • Permanent heel: up to 15° to any side.
  • Permanent trim: up to 5° forward or aft.
  • Roll amplitude: up to 40°.
  • Pitch amplitude: up to 10°.
  • Wind pressure: max. 2000 Pa.

2. Purpose

Designed for various lifting operations, including hazardous cargo handling.

Marine Boom Crane, SWL 20 t Side View Dimensional Drawing
Marine Boom Crane, SWL 20 t Side View Dimensional Drawing

About

The Role of Deck Machinery in Modern Industry

Modern heavy industries, shipbuilding, and port infrastructure rely on lifting equipment engineered to perform complex handling operations with high positioning accuracy and repeatability. Marine boom cranes represent a core category of deck machinery due to their operational versatility and capability to handle various cargo types. This equipment is widely deployed for construction, repair, maintenance, and the transfer of heavy assemblies and structures.

Structural Design and Operating Principle

The primary structural components of a boom crane include a slewing column and a boom configuration, which define the operating radius and coverage area. System operation relies on the integration of drive systems, hoisting machinery, and dedicated control systems. Modern engineering solutions focus on improving motion control, reducing component wear, and maximizing equipment service life. Significant emphasis is placed on ergonomic control interfaces and operator safety systems.

Advanced Engineering in Lifting Technology

Lifting equipment engineering continues to evolve through the integration of advanced materials, automation, and digital control systems. Modern boom cranes operate as interconnected technical systems, incorporating load sensors, monitoring units, and remote control interfaces. This integration improves operational predictability and simplifies scheduled maintenance procedures.

Manufacturing and Industry Expertise

Specialized heavy machinery enterprises handle the engineering and manufacturing of lifting equipment. Izhora Hydrosystems LLC designs and manufactures advanced lifting machinery, delivering boom cranes tailored to specific industry regulations and practical operational requirements. The development process focuses heavily on structural reliability, manufacturing efficiency, and ease of subsequent maintenance.

The Significance of Lifting Equipment for Infrastructure Projects

Lifting machinery remains a critical element in the execution of infrastructure and industrial projects. Boom cranes are deployed where a combination of maneuverability, positioning accuracy, and operational stability is required. Integrating this deck machinery optimizes production processes, reduces labor costs, and improves the overall efficiency of technological operations.


3. Scope of Supply

3.1 Marine Boom Crane, Lifting Capacity: 20 t x 12 m

3.1.1 System Components

ComponentQty
Pedestal base1 pc.
Slewing column1 pc.
Electrical equipment installation1 set
Slewing drive1 pc.
Winch assembly1 pc.
Hook block1 pc.
Control cabinet1 pc.
Hydraulic equipment installation1 set
Hydraulic power unit1 pc.
Heated operator cabin, equipped with window heating and wipers1 pc.
Remote control unit1 pc.

3.1.2 Technical Specifications

ParameterValue
Safe Working Load (SWL), max., kg20000
Outreach, m12
Hoisting/lowering speed, m/min10
Lowering depth, m (from vessel foundation level)20
Winch drive typeHydraulic
Slewing angle, deg.Continuous
Slewing speed without load, rpmmin. 1
Crane controlFrom operator cabin
Electrical power supply3 phases, 380 V, 50 Hz
Crane weight, kg11000

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

Manufacturer’s standard spare parts kit configured for 3 years of operation.

3.1.4 Documentation

DocumentQty
Product passport1
Installation and operating manual1
Spare parts, tools, and accessories (S&A) list1
Factory acceptance test (FAT) protocol1
Shipboard integration test procedure and program1

3.1.5 Certificates

RS Certificate of Conformity (Form 6.5.30) — 1 copy.
The crane is supplied with an extract from the Registry of Industrial Products Manufactured in the Russian Federation, in accordance with the requirements of the Decree of the Government of the Russian Federation No. 719 “On Confirmation of Production”.


4. Additional Requirements

  • Electrical equipment: Ingress protection rating IP56.
  • Coating system: Coating specification and color subject to Customer approval.
  • Preservation: Temporary preservation coatings provide an indoor storage life of 12–18 months.
  • Hydraulic fluid: Standard AUP hydraulic fluid.
  • Fluid cleanliness level: Cleanliness level min. Class 12 in accordance with GOST 17216-71.
  • Electrical connections: Power supply cables are equipped with mating connectors.
  • Temperature classification: Equipment is supplied with RS design documentation certifying operational capability down to -30 °C without supplementary heating systems.
  • Packaging and logistics: Equipment is delivered in packaging designed for both crane lifting and forklift handling, suitable for road transport and sheltered outdoor storage.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from delivery date, unless otherwise specified in the contract.


Contacts

Phone: +7 (812) 339-61-68

Email: contact@i-hydro.tech