Shipyard jib Crane is a heavy-duty lifting system specifically designed to support shipbuilding, ship repair, and offshore construction operations. It is used for handling large ship blocks, machinery, engines, steel structures, and outfitting equipment within shipyards and dry docks, where high lifting capacity, long reach, and operational reliability are essential.
Shipyard cranes are available in various configurations, including gantry cranes, portal cranes, jib cranes, floating cranes, and rail-mounted cranes, allowing flexibility to suit different shipyard layouts and production processes. Engineered with robust steel structures and powerful hoisting mechanisms, these cranes provide high load capacities, long spans, and precise load positioning for efficient block assembly and installation.
Modern shipyard cranes are equipped with advanced electric or electro-hydraulic drive systems, offering smooth and synchronized control of hoisting, slewing, trolley travel, and crane movement. Integrated safety systems such as load monitoring, overload protection, wind alarms, emergency stop functions, and anti-collision systems ensure safe operation under demanding working conditions.
Designed for continuous-duty operation in harsh marine environments, shipyard cranes feature marine-grade corrosion protection, reinforced components, and weather-resistant systems. Optional features such as remote control operation, automated positioning, tandem lifting capability, and integration with shipyard production systems further enhance productivity and safety.
Shipyard cranes are designed and manufactured in accordance with EN 13001, FEM, ISO, CE directives, and relevant classification society and shipyard standards, delivering reliable performance, long service life, and efficient lifting solutions for modern shipbuilding and repair facilities.
jib Crane
Jib Crane
1 System Description & Scope / Equipment for Crane
1.1 System Description
Lifting Capacity : at 27 m working radius 20.000 kgs
Lifting Moment : 750 metricton
Max Outreach Distance : 27 m (Main Hoist)
Hoisting speed at full load : 12 m/min Without load : 24 m/min
Lifting speed : 180 sec.
Slewing speed : 0-2 rev/min
Power supply (without neutral) : 3X400V, 50Hz, 3 wires
1.1.1 CRANE CONTROL
The crane is manufactured according to SOLAS and IMO regulations.
The crane is cab controlled with proportional hydraulic system.Hydraulic control valves in the machine room.
1.1.2 LOAD LIMITING SYSTEM
Each hydraulic circuit is provided with equipment for limiting hydraulic pressure to present values corresponding to the crane capacity.
1.1.3 SAFETY SYSTEMS
-Emergency stop,
-Overload protection of all motions by overload relief valves,
-Hydraulic hook stop in upper position,
-Load holding valve on the hydraulic luffing cylinder,
-Overload protection, all motions will be protected against overload by individual safety valves,
-Low oil level will be indicated visually on the oil level gauge on the HPP. When oil level to be low, electric motor will stop automaticly.
1.1.4 SLEWING MACHINERY
Slewing is provided by Planetary gearbox with hydraulic motor.
Having 0- 2.0 rpm slewing speed.
360° slewing is supplied.
Foundation is to be bolted.
1.1.5 HOISTING MACHINERY
Drum steel structure is provided with a safety system.
Hoisting reduction is provided with planet gearing and driven by hydraulic motor.
The wire rope is of the non- rotating type and galvanized.
The wire sheaves are provided with heavy duty bronze bearings on strength steel axles.All bearings have grease nipple lubrication.
Winch Capacity : 5000 kgs
Wire Rope Diameter is : 22 mm
Drum capacity : 400 m.
Pulley : 1 / 4
Speed : 48 m/min
Level Luffing system : ok
1.1.6 HYDRAULIC POWER PACK
Pump Delivery :2* 120 l/min
Hydraulic Tank Capacity : 1500 litres
Working Pressure : 270 bars
E -Motor Power : 110 kW -1800 rpm-380V-50Hz
Enclosure of motors : Cast Iron
Motor enclosure Type : Semi enclosed drip proof construction
Terminal Box Material : Steel
Isolation class : F
Protection Class : IP-56
Oil level indicator : YES
Suction filter : YES
Return Filter : YES
Humidity Protection : OK
1.1.7 STEEL STRUCTURE
The steel quality is selected in accordance with the classification societies recommendation to obtain necessary ductility for the lower temperature design limit.
All important weldings are carried out in accordance with welding procedure.
After welding a certain amount of NDT control is carried out. Boom meterial is high Steel (Yield Stress 350-700 N/mm2) and boom type is lattice. Foundation is designed according to max. load.
1.1.8 SURFACE TREATMENT and PAINTING
SA 2,5 sand blasting and metalizing before one coat, two pack epoxy primer.
1.1.9 Cab
Full vision, all steel fabricated with acoustical lining and tinted safety glass throughout.
Deluxe seat incorporates armrest-mounted electric dual-axis controllers.
Dash panel in-corporates gauges for all engine functions. Other standard features include: hot water heater , cab circulating air fan, sliding side and rear windows, sliding skylight with electric wiper and sunscreen, electric windshield wash/wipe, fire extin- guisher and seat belt.
1.1.10 Load Moment & Anti-Two Block System
Standard “Graphic Display” load moment and anti-two block system with audio-visual
warning and control lever lockout. These systems provide
electronic display of boom angle, length, radius, tip height, relative load
moment, maximum permissible load, load indication and warning of
impending two-block condition. The standard Work Area Definition System allows the
operator to pre-select and define safe working areas. If the crane approaches the pre-set limits, audio-visual warnings aid the operator in avoiding job-site obstructions.