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Stiff boom crane 1.5t explosion-proof (Technical supply specification)


1. General Information (Operating Conditions)

Operating conditions for crane operation:

  • Ambient temperature: −32 °C (at 85% relative humidity) to +30 °C (at 60% relative humidity)
  • Constant heel: up to 5° to any side
  • Constant trim: up to 2° by bow or stern
  • Sea state: up to 3
  • Wind load: max. 400 Pa

Operating conditions in stowed position:

  • Constant heel: up to 15° to any side
  • Constant trim: up to 5° by bow or stern
  • Rolling amplitude: up to 40°
  • Pitching amplitude: up to 10°
  • Wind load: up to 2000 Pa

2. Purpose

The stiff boom crane with a capacity of 1.5 t at 6 m outreach is designed for:

  • handling and securing cargo hoses at the aft manifold;
  • provisioning operations;
  • handling spare parts from the engine room.
Stiff boom crane 1.5 t capacity side view general arrangement drawing
Stiff boom crane 1.5 t capacity side view general arrangement drawing

About

Stiff Boom Crane: Precision and Reliability on Board

Every deck operation requires high precision, particularly when handling cargo in confined spaces. A stiff boom crane enables load handling with exceptional predictability: the boom moves strictly along a defined path, providing the operator with complete control over the trajectory.

Design Impact on Performance

The linear kinematics of the crane minimize load swing and simplify positioning. Even under high wind loads or sea state conditions, the load remains stable. This allows the crew to focus on operation control without risk of sudden displacements.

Vessel Applications

Stiff boom cranes are utilized on various vessel types, from small barges to offshore platforms. The simple yet robust design ensures straightforward deck integration without major structural modifications. This is critical for minimizing port turnaround times and supporting high-intensity operations.

Engineering and Manufacturing

Izhora Hydrosystems LLC designs stiff boom cranes engineered for actual marine environments. Salt spray exposure, wind loads, vibration, and temperature fluctuations are fully accounted for during the engineering phase. Consequently, the equipment maintains stable performance parameters during extended operational lifecycles.

Crew Operations and Safety

Crane control is intuitive, which simplifies operator training and reduces the risk of human error. The precise load trajectory reduces cycle times and minimizes downtime. Even during high-tempo operations, the crew can perform tasks with confidence and safety.


3. Scope of Supply

3.1 Stiff boom crane 1.5 t × 6 m explosion-proof

3.1.1 Product Composition

DescriptionQuantity
Stiff boom crane 1.5 t × 6 m, complete assembly1 pc.
Pedestal1 pc.
Housing1 pc.
Boom assembly1 pc.
Platform1 pc.
Winch foundation1 pc.
Winch1 pc.
Rotary joint assembly1 set
Boom rest for stowed position1 pc.
Hydraulic cylinder1 pc.
Hook block1 pc.
Boom support1 pc.
Floodlight assembly1 set
Inclinometer assembly1 set
Control console cover1 pc.
Access hatch1 pc.
Warning light assembly1 set
Acoustic horn assembly1 set
Stiff boom crane 1.5 t capacity top view general arrangement drawing
Stiff boom crane 1.5 t capacity top view general arrangement drawing

3.1.2 Main Parameters

ParameterValue
Safe Working Load (SWL), t1.5 (at 6 m outreach)
Max. operational outreach, m6
Min. operational outreach, m0.95
Hoisting/lowering speed, empty hook, m/min20
Hoisting/lowering speed, rated load, m/min11
Slewing speed under load, rpm1.2
Slewing angle, °360
Hook travel, m40
Crane weight (excluding oil and boom rest), kg3000
Slewing drive typeHydraulic
Power supply3 phases, 380 V, 50 Hz
ControlFixed console, portable console with 10 m cable (explosion-proof)
Control cabinetExplosion-proof
Explosion-proof rating2 Ex II T4

3.1.3 Spare Parts (SPTA)

Manufacturer standard for 1 year of operation — 1 set.

3.1.4 Documentation

DocumentQuantity
Certificate (Passport)1
Installation, commissioning and adjustment instructions1
Operating manual1
Shipboard test program and procedure1
Factory acceptance test (FAT) report1
Spare parts list1

3.1.5 Certificates

  • RMRS Certificate (RS Form 6.5.30) — 1 pc.
  • The equipment is supplied with an extract from the registry of Russian industrial products in accordance with the requirements of the Decree of the Government of the Russian Federation No. 719 “On Confirmation of Production”.

4. Additional Requirements

  • All electrical equipment features IP56 protection class.
  • All materials are resistant to operating temperature ranges (−32 °C to +30 °C).
  • Coating system: coating specification and color shall be agreed with the Customer.
  • Preservation coatings ensure an indoor storage lifecycle of 12–18 months.
  • Hydraulic system working fluid: AUP.
  • Working fluid cleanliness class according to GOST 17216-71: min. 12.
  • Power supply cables are equipped with mating connectors.
  • Oil cooler is mounted on the crane pedestal.
  • All equipment is explosion-proof.
  • Hook block is explosion-proof.
  • Equipment is supplied with RS documents confirming operational capability at minus 30 °C without supplementary heating.
  • Equipment is delivered in packaging suitable for crane and forklift handling, road transport, and sheltered outdoor storage.
  • Design documentation, within the scope agreed with the Customer, shall be provided following contract execution.
  • General arrangement drawings of the equipment, including standalone components, shall be provided in *.dwg and *.cdw formats, indicating cable termination coordinates to the vessel power grid, hydraulic piping connection points, maintenance areas, and electrical/hydraulic connection requirements (where applicable).
  • Dimensions of interface surfaces, installation requirements, and foundation loads will be provided for the development of detailed design documentation for the electro-hydraulic crane installation.
  • 3D model of the supplied equipment (*.stp format).
  • Spare parts lists specifying the quantity, dimensions, and weight of crates.
  • List of built-in or SPTA-included measurement and control instruments subject to periodic calibration during operation.
  • List of instrumentation indicating measurement accuracy limits and calibration intervals.
  • Data for mooring and sea trials program and procedure.
  • Equipment operating manual.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the date of delivery


Contacts

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