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Marine telescopic boom crane, 16t capacity (Technical supply specification)


1. General Information (Operating Conditions)

The marine telescopic boom crane is designed for reliable operation under the following conditions:

  • ambient air temperature: −30 °C to +35 °C;
  • water temperature: −2 °C to +32 °C;
  • relative humidity: 98% at +35 °C;
  • shipboard vibration;
  • periodic sea water splashing of components;
  • vessel heel: up to 15°;
  • vessel trim: up to 5°;
  • roll: up to 40°;
  • pitch: up to 10°;
  • wind load: up to 2000 Pa.

The crane remains operational after exposure to the specified conditions when stowed in the travel position.


2. Purpose

Interconnected operation with a winch for launching and recovering equipment over the vessel side.

Marine telescopic boom crane 16t capacity general arrangement drawing side view
Marine telescopic boom crane 16t capacity general arrangement drawing side view

About

Marine Cranes in Modern Vessel Systems

Marine cranes are an integral part of the technical infrastructure of research, fishing, and auxiliary vessels. They interface the deck space with the marine environment, enabling equipment handling, umbilical operations, and deck system maintenance independent of shore-based facilities. Within the maritime industry, these units function as self-contained systems integrated into the vessel complex rather than auxiliary tools.

Design Optimized for Marine Environments

Marine telescopic boom cranes are engineered specifically for offshore operational requirements, including ship motion, confined spaces, and variable loads. The telescopic boom enables outreach adjustment without relocating the crane base, which is critical for vessels with high-density deck layouts. The continuous slewing design ensures optimal work area coverage and adapts operation to vessel dynamics.

Integration with Deck Systems

Modern marine cranes do not operate in isolation; they interface with cable and umbilical handling systems, deck areas, control stations, and research complexes. The capability to interface directly with cables, manage them, and maintain sheave assemblies incorporates this equipment into a unified deck logistics network. Consequently, the integration of mechanical, hydraulic, and electrical control systems creates a robust platform for operational execution.

Design and Manufacturing Approach

The manufacturing of these systems requires both mechanical engineering expertise and an understanding of marine operational logic. Izhora Hydrosystems LLC implements designs tailored to the specific requirements of the shipbuilding industry and design bureaus. The development process includes engineering documentation package preparation, classification society approval, and structural adaptation to individual vessel layouts.

The Role of Marine Cranes in Research and Service Applications

On research vessels, the marine crane functions as an integral part of the system for handling equipment interfacing with the underwater environment. It enables launching, recovery, maintenance, and positioning of instruments, allowing operations to proceed without altering the vessel course or depth. For service vessels, it serves as a primary tool for deck operations, system maintenance, and auxiliary tasks.

Evolving Requirements and Technological Development

As marine operations increase in complexity, crane requirements continue to evolve, demanding higher precision, expanded functionality, and advanced control systems. The introduction of electronic monitoring, wireless control, and diagnostics establishes a new level of operator-machine interface. Throughout this development, the core principle remains unchanged: the equipment must maintain resistance to the marine environment and ensure stable performance under variable conditions.


3. Scope of Supply

3.1 Marine Telescopic Boom Crane

3.1.1 Bill of Materials

ComponentQty
Marine telescopic boom crane assembly1 pc
Portable control pendant1 pc
Hydraulic system oil filling/draining tools1 set
Electrical equipment kit for shipboard crane connection (terminals integrated into the control cabinet)1 set
Adapter (crane pedestal foundation) with fasteners1 pc
Control panel for integration into the console1 pc
Control cabinet1 pc
Counter-connections for shipboard hydraulic system interface1 set
Electrical safety signs1 set
Marine telescopic boom crane 16t capacity general arrangement drawing top view
Marine telescopic boom crane 16t capacity general arrangement drawing top view

3.1.2 Technical Data

ParameterValue
Model typeContinuous slewing marine telescopic boom crane
Safe Working Load (SWL) in calm water ($h_{3\%}$ ≤ 0.25 m), vertical and horizontal directions:
– Cable-umbilical sheave25 t
– Main hoist16 t
– Auxiliary hoist10 t
Cable-umbilical diameter22 mm
Cable-umbilical sheave diameter900 mm
Maximum outreach20.5 m
Minimum outreach9.5 m
Maximum boom luffing angle40°
Slewing angle360° continuous
Nominal hydraulic system pressure25 MPa
Estimated weight38.5 t
Duty cycleMedium duty, 25% intermittent duty rating (ED)

3.1.3 Spare Parts Kit

Standard OEM spare parts kit for 2-year operation.

3.1.4 Documentation

DocumentQty
Product data sheet1
Installation manual1
Operating manual1
Spare parts list1
Factory acceptance test (FAT) report1
Shipboard test program and procedure1

3.1.5 Certificates

  • RMRS Certificate (RS Certificate) Form 6.5.30 — 1 copy.

4. Additional Requirements

  • Type: Hydraulic continuous slewing marine telescopic boom crane with hydraulic hoisting and telescoping functions.
  • The crane is equipped with:
    • Umbilical handling system: a swiveling sheave at the boom tip and a sheave train directing the umbilical downward to the shipboard umbilical winch;
    • Cargo operations: a main hoist with 16t capacity;
    • Auxiliary operations and umbilical sheave maintenance: an auxiliary hoist with 10t capacity.
  • Access platforms are provided for the maintenance of the umbilical sheaves.
  • The design enables umbilical reeving through the sheaves without dismantling the umbilical connector.
  • The crane is operated from a backpack-type portable control pendant and from the research operations control station.
  • Both the control station panel and the portable control pendant are equipped with red emergency STOP buttons in the control circuits to disconnect the main electric drive circuits and apply brakes to all launch and recovery system (LARS) motions, as well as “Operation” and “Common Fault” indicator lights.
  • The crane control system provides stepless speed control for all boom motions from zero to maximum, as well as simultaneous motion execution (with a reduction in maximum speeds).
  • The marine telescopic boom crane is equipped with additional limiters (automatic limit switches) that trigger upon:
    • boom overload exceeding 10% of the rated capacity in calm water and at least 25% of the rated capacity in sea state conditions;
    • rope slack;
    • hooks and boom approaching extreme upper and lower positions.
  • Following limiter (limit switch) activation, motion in the reverse direction remains enabled.
  • The marine telescopic boom crane is equipped with an alarm horn/siren activated from both the control station panel and the portable pendant.
  • The crane is provided with an outreach indicator integrated into the control station panel.
  • Floodlights are installed to provide illumination of the cargo operations zone.
  • A separate power supply (230 V, 50 Hz) is provided for the machinery space lighting system to enable crane maintenance and repair operations when the main power circuits are de-energized. The power feeder switch is installed as standard on the crane pedestal foundation.
  • The machinery space is equipped with 230 V receptacles to enable maintenance operations.
  • The marine crane is powered by the shipboard hydraulic system with a pressure of 250 bar and a rated flow not exceeding 600 l/min.
  • The marine telescopic boom crane is equipped with a wire rope washing device.
  • The crane is delivered complete with fasteners and the required tools for securing the boom to the pedestal foundation.
  • An emergency manual drive is provided to enable stowing of the crane into the travel position from any intermediate position in the event of a power failure.
  • The hydraulic cylinders are equipped with either proportional pilot-operated check valves or zero-leakage counterbalance valves to ensure smooth performance under dynamic loads and position holding, as well as hose-burst protection valves.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the shipment date, unless otherwise specified by contract.


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