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Stiff boom crane 5t explosion-proof (Technical supply specification)


1. General Information (Operating Conditions)

Operating conditions for stiff boom crane in working condition:

  • Ambient air temperature from -32°C (at 85% relative humidity) to +30°C (at 60% relative humidity);
  • Heel up to 5° to any side;
  • Trim up to 2° forward or aft;
  • Sea state up to 3;
  • Wind load max. 400 Pa;

Operating conditions for stiff boom crane in stowed position:

  • Heel up to 15° to any side;
  • Trim up to 5° forward or aft;
  • Roll amplitude up to 40°;
  • Pitch amplitude up to 10°;
  • Wind load up to 2000 Pa.

2. Purpose

Stiff boom crane with SWL 5t at 14.5m outreach is designed for:

  • handling and holding cargo hoses on both sides;
  • deployment of oil booms.
Stiff boom crane 5t capacity general arrangement drawing side view
Stiff boom crane 5t capacity general arrangement drawing side view

About

Stiff Boom Crane: Essential Marine Equipment

Stiff boom cranes are widely used on various types of vessels. The design ensures stable load handling along a precise trajectory, which is critical in confined deck spaces. This configuration optimizes workflow and improves the precision of handling operations.

Technical Evolution of the Design

The evolution of stiff boom cranes is driven by the need to simplify hoisting mechanisms and reduce the number of moving parts. Due to linear kinematics, the operator achieves predictable and steady control, making load handling more manageable even in adverse weather conditions.

Role in Deck Logistics

In vessel logistics, the stiff boom crane performs a key function by accelerating load handling and transfer, reducing cycle times, and improving positioning accuracy. This is highly relevant during limited port stays, where operational efficiency directly impacts productivity.

Engineering Approach and Design Solutions

Izhora Hydrosystems LLC designs stiff boom cranes tailored to actual operating conditions. The equipment design is rated for continuous operation under exposure to marine environments, vibrations, and temperature fluctuations. This approach maintains stable performance parameters without loss of efficiency.

Adaptation for Various Vessel Types

The stiff boom crane can be installed on various vessel types, ranging from cargo barges to specialized offshore platforms. The straightforward design facilitates integration into existing vessel systems without requiring complex deck modifications. This ensures versatility and flexibility in application.

Impact on Crew Operational Efficiency

The use of stiff boom cranes optimizes onboard logistics operations. The simple design streamlines crew training, while precise load handling reduces the risk of downtime and errors. This enables a steady workflow even under increased operational loads.

Current Operational Trends

The shipbuilding industry increasingly demands compact, high-technology solutions with simplified maintenance. The stiff boom crane meets these requirements, ensuring its sustained application on modern vessels and marine infrastructure. It remains in demand due to its combination of reliable mechanics and installation flexibility.


3. Scope of Supply

3.1 Explosion-proof stiff boom crane

3.1.1 Bill of materials

ComponentQty
Stiff boom crane assembly1 pc.
Pedestal1 pc.
Housing1 pc.
Boom assembly1 pc.
Platform1 pc.
Winch foundation1 pc.
Winch1 pc.
Swivel 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.
Manhole1 pc.
Visual alarm assembly1 set
Audible alarm assembly1 set
Stiff boom crane 5t capacity general arrangement drawing top view
Stiff boom crane 5t capacity general arrangement drawing top view

3.1.2 Main Parameters

ParameterValue
Safe Working Load (SWL)5 t (at 14.5 m outreach)
Max. working outreach14.5 m
Min. working outreach3.0 m
Hoisting/lowering speed, light hook30 m/min
Hoisting/lowering speed, rated load15 m/min
Slewing speed0 to 1.2 rpm
Slewing angle360°
Hook travel40 m
HPU electric motor rated power37 kW
Crane weight (excl. oil and boom rest)9000 kg
Slewing drive typeHydraulic
Power supply3 phase, 400 V, 50 Hz
Crane controlFixed console, portable console with 10m cable (explosion-proof)
Control cabinetExplosion-proof
Explosion protection marking2 Ex II T4

3.1.3 Spare Parts (SPTA)

Manufacturer’s standard 1-year operational spare parts kit — 1 set.

3.1.6 Documentation

DocumentQty
Technical Passport1
Installation, commissioning, and adjustment instructions1
Operating Manual1
Shipboard test program and procedure1
Factory acceptance test (FAT) report1
List of spare parts1

3.1.7 Certificates

RMRS Certificate (RS Form 6.5.30) — 1 pc.


4. Additional Requirements

  • All electrical equipment rated to IP56 protection class;
  • All materials rated for ambient operating temperatures (-30°C to +30°C);
  • Coating: coating system and color subject to Customer approval;
  • Preservation coatings ensure an indoor storage life of 12–18 months;
  • Hydraulic fluid: AUP;
  • Hydraulic fluid cleanliness class according to GOST 17216-71: min. class 12;
  • Power supply cables supplied with mating connectors;
  • Oil cooler mounted on the crane pedestal;
  • All equipment is explosion-proof;
  • Hook block is spark-proof;
  • Equipment supplied with RS certificates confirming operational capability at -30°C without additional heating;
  • Equipment supplied in packaging suitable for both crane and forklift handling, road transport, and sheltered outdoor storage;
  • Design documentation supplied in the scope agreed with the Customer after contract signature;
  • General arrangement drawings of equipment, including loose items, indicating cable entry coordinates for vessel power grid connection, hydraulic piping connection points, maintenance areas, and electrical/hydraulic connection requirements (if applicable) in .dwg and .cdw formats;
  • Dimensions of mounting surfaces, installation requirements, and foundation loads supplied for the development of detailed design documentation for electro-hydraulic crane installation;
  • 3D model of the supplied equipment (.stp format);
  • SPTA lists indicating: number of crates, crate dimensions, crate weight;
  • List of built-in or SPTA-supplied measurement and control instruments subject to periodic calibration during operation;
  • List of instrumentation indicating accuracy limits and calibration intervals;
  • Data included in mooring and sea trials programs and procedures;
  • Equipment Operating Manual.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the delivery date


Contacts

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