3T 20m Hydraulic Telescopic Boom Marine Crane | Shipboard Crane with Operator

Product Specification

3T 20m Hydraulic Telescopic Boom Marine Crane | Shipboard Crane with Operator Cabin

Product Overview

The 3T 20m hydraulic telescopic boom marine crane is a deck-mounted shipboard lifting appliance configured with a telescopic box boom, hydraulic hoisting winch, hydraulic luffing and slewing functions, and an operator cabin. The telescopic arrangement allows the boom reach to be adjusted for cargo, stores, maintenance and general deck-handling duties while reducing the stowed footprint compared with a fixed long boom.

The supplied product data identifies a 3 t model within a 5–20 m working-radius range. However, the available table is a model/series parameter table rather than an approved load chart; it does not independently confirm that 3 t is permitted at the full 20 m outreach. Final lifting capacity at each radius, vessel motions, wind limits, pedestal reactions, power supply, control mode and classification scope must therefore be confirmed in the approved GA drawing, load chart and project specification.

Quick Specifications

• Product type: Hydraulic telescopic boom shipboard crane → adjustable outreach with compact stowage for deck lifting duties.

• Maximum stated SWL: 3 t → final permissible load at each working radius must follow the approved load chart.

• Working radius: 5–20 m in the supplied 3 t row → useful for preliminary deck-layout and outreach checking.

• Hoisting performance: 10–15 m/min with 30–40 m stated hoisting height → final speed and hook travel should be confirmed for the selected reeving and project duty.

• Slewing: 0.5–1 r/min with 0–360° arrangement stated in the existing product record → continuous/limited rotation and limit-switch logic are project-specific.

• Luffing time: 70–80 s for the supplied 3 t row → indicates hydraulic boom-angle adjustment rather than fixed-radius operation.

• Power rating: 25 kW in the supplied 3 t table → motor/HPU sizing must be reconfirmed against duty cycle, simultaneous functions, hydraulic pressure/flow and vessel power supply.

• Operator station: cabin configuration → local, cabin and/or remote-control functions should be defined in the approved control philosophy.

Main Technical Parameters

Product-specific webpage parameters taken from the supplied/current product record. Items requiring an approved load chart or project confirmation are identified accordingly.

Selection & Inquiry Guide

Step 1: Confirm the lifting duty: load weight, required SWL at each outreach, minimum and maximum working radius, hoisting height/hook travel, cargo type and lift path. An SWL–radius load chart is required for final selection.

Step 2: Confirm vessel and operating conditions: vessel type, intended shipboard duty, heel/trim limits, operating and stowed wind criteria, ambient/design temperature, and whether the lift is onboard, ship-to-shore or a separately defined offshore lifting operation.

Step 3: Confirm performance and power: hoisting, slewing, luffing and telescoping speeds; duty cycle; electrical voltage/frequency/phase; hydraulic power-pack arrangement; and any redundancy requirement.

Step 4: Confirm installation interface: pedestal height and diameter, welded or bolted foundation, available deck space, boom stowage/parking position, deck reinforcement, and allowable foundation forces and moments.

Step 5: Confirm controls and safety scope: operator cabin, local/remote control, emergency stop, brakes, limit switches, overload/load-moment protection and any additional project safety functions. Final configuration is subject to approved design.

Step 6: Confirm classification and delivery scope: required class society/flag requirement, certificate and witness scope, coating system, quantity, destination, required delivery time, vessel GA, installation drawing and reference photos.

Structure & Components

Deck pedestal / foundation interface | Slewing bearing and rotating structure | Telescopic box boom | Boom extension mechanism | Luffing cylinder | Hydraulic hoisting winch | Sheaves, wire rope and hook block | Hydraulic power and control system | Electrical control cabinet | Operator cabin / control station

Marine Crane Engineering & Quality Advantages

• Telescopic outreach allows the crane to cover different deck positions without maintaining the full boom length at all times, which is useful where stowage envelope and deck space are limited.

• For a telescopic crane, selection should be based on the approved load chart rather than a single maximum SWL. Boom extension, working radius and vessel inclination can materially affect allowable lifting capacity.

• The pedestal and deck foundation are part of the lifting load path. Vertical load, overturning moment, slewing moment and local deck reinforcement should be checked from the approved foundation-load data before installation.

• Hydraulic hoisting, luffing, telescoping and slewing enable controlled positioning, but hydraulic pressure, flow, cooling, oil grade, hose specification and seal selection must match the actual duty cycle and design temperature.

• Control and safety devices should be defined as part of the project approval package. Required brakes, upper/lower limits, overload or load-moment protection, emergency stop and slewing limits must not be assumed from a generic model description.

• For exposed marine service, surface preparation and coating should be specified by the vessel coating system. The existing record states blast cleaning and a three-layer epoxy system; final preparation grade, DFT and ISO 12944 environment/durability category should be confirmed.

• Shipboard crane duty and offshore lifting duty are not interchangeable. Offshore lifts require the applicable dynamic/environmental design basis and approval scope to be stated separately.

Custom Attributes

• Rated Capacity: 3 t maximum stated SWL → allowable load at each radius must follow the approved load chart.

• Working Radius: 5–20 m → confirm minimum radius, maximum outreach and rated load across the full range.

• Boom System: Hydraulic telescopic → provides adjustable reach and a shorter stowed envelope than a fixed long boom.

• Hoisting: Hydraulic winch, 10–15 m/min stated → reeving, wire rope, hook block and brake arrangement to be confirmed.

• Slewing: 0–360°, 0.5–1 r/min stated → continuous or limited rotation and cable/hose routing to be confirmed.

• Luffing: Hydraulic cylinder, 70–80 s stated → boom-angle range and end-limit arrangement to be confirmed.

• Control Station: Operator cabin configuration → local or remote-control functions available only when specified and approved.

• Mounting: Deck pedestal, welded or bolted arrangement referenced → pedestal interface and deck reinforcement must follow approved foundation loads.

• Working Temperature: -40°C to +50°C stated → low-temperature steel, hydraulic oil, seals and electrical components require project confirmation.

• Surface Protection: Marine coating system to project specification → existing record states blast cleaning plus three-layer epoxy; DFT and current ISO 12944 category to be confirmed.

• Classification: Available according to project requirement → class approval, survey, testing and certificate scope must be agreed before quotation.

How It Works

Operator command → Hydraulic power drives hoisting / luffing / telescoping / slewing functions → Boom outreach is adjusted for the required working position → Winch raises or lowers the load within the approved load chart → Slewing positions the load over the permitted working sector → Crane is returned to its approved stowed / secured condition after operation

Applications

Ship deck cargo and stores handling | Deck maintenance and equipment handling | Cargo vessels | Workboats and service vessels | General shipboard lifting duties | Newbuilding and crane replacement projects

Certifications & Advantages

Classification, inspection, load testing and certification can be arranged according to the vessel flag, project specification and selected classification society, subject to class approval and the agreed order scope. For projects to which SOLAS regulation II-1/3-13 applies, the applicable design, construction, installation, testing, SWL marking/documentation, inspection, operation and maintenance requirements should be addressed in the approval package.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.

Drawing & Photos

FAQ

Q1: Does “3T 20m” mean the crane can lift 3 tonnes at 20 m outreach?

A1: Not automatically. The supplied data gives a 3 t model and a 5–20 m working-radius range, but no approved SWL–radius load chart is provided. The allowable load at 20 m and at intermediate radii must be confirmed by the approved crane load chart.

Q2: Can this shipboard telescopic crane be used for offshore lifting?

A2: Only when the crane is specifically designed, assessed and approved for the stated offshore lifting duty and environmental/dynamic conditions. A normal shipboard marine crane specification should not be presented as an offshore crane specification without that confirmation.

Q3: What information is required before quotation and class submission?

A3: Provide the required SWL at each outreach, minimum/maximum radius, hook travel, vessel type, lift duty, heel/trim and environmental conditions, electrical supply, control mode, pedestal/foundation arrangement, coating requirement, class/flag requirement, quantity, destination, delivery schedule and vessel/installation drawings.