Liebherr BOS series
| Liebherr BOS series | |
|---|---|
.jpg) Liebherr BOS crane (right) on the Floatel Endurance | |
| Overview | |
| Manufacturer | Liebherr-Rostock GmbH |
| Production | 1975 - present |
| Assembly | Rostock,  GermanyNenzing,  Austria (formerly) |
| Powertrain | |
| Engine | electric or diesel engine |
| Transmission | hydrostatic |
The Liebherr BOS series is a family of offshore cranes manufactured by Liebherr-Rostock GmbH, a subsidiary of the Liebherr Group.
The crane family is designed for heavy-lift, maintenance and supply operations on offshore installations and comes in electro-hydraulic, diesel-hydraulic or all-electric configurations.
History
[edit]Liebherr delivered its first BOS crane B10/17 EX in 1975 for installation on the FPSO unit Princess Aweni.[1]
In 2015, the Liebherr plant in Nenzing sold its 1,000th offshore crane. This figure includes both BOS cranes and RL cranes from the Liebherr RL series.[2]
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As of November 2025, a total of 502 BOS cranes had been produced and installed worldwide. The United Kingdom, Brazil, and Norway rank among the largest markets.[1]
Design and engineering
[edit]Structural design
[edit]The BOS crane is a slew-bearing, rope-luffing crane equipped with a lattice boom. It is offered in a range of sizes, with lifting capacities of up to 1,400 t (1,400 long tons; 1,500 short tons). The crane can be fitted with a boom length of up to 102 metres, meeting the requirements for offshore wind farm installations.
Following a design revision in 2005, the BOS series adopted a configuration that Liebherr now regards as the industry standard; The update introduced a division between the A-frame and the machinery housing, replacing the earlier concept in which the drive system was integrated into the turntable with the A-frame mounted on top.[1]
Representative models and technical data
[edit]The series includes multiple models, which are differentiated by their boom length and lifting capacity. The number in the model name represents the overturning moment in ton-metres.
| Model | Maximum lifting capacity[5] | Maximum outreach |
|---|---|---|
| BOS 2600 | 75 t (74 long tons; 83 short tons) | 57 m (187 ft) |
| BOS 4600 | 140 t (140 long tons; 150 short tons) | 69 m (226 ft) |
| BOS 4600 E | 100 t (98 long tons; 110 short tons) | 69 m (226 ft) |
| BOS 7500 | 300 t (300 long tons; 330 short tons) | 84 m (276 ft) |
| BOS 14000 | 600 t (590 long tons; 660 short tons) | 102 m (335 ft) |
| BOS 35000 | 1,250 t (1,230 long tons; 1,380 short tons) | 102 m (335 ft) |
| BOS 45000 | 1,400 t (1,400 long tons; 1,500 short tons) | 102 m (335 ft) |
References
[edit]- 1 2 3 "Celebrating 50 years of innovation: Liebherr BOS cranes mark a major milestone". Liebherr.
- ↑ "Liebherr Delivering the 1,000th Offshore Crane Order". Offshore Technology.
- ↑ "Seafox 5" (PDF). Seafox Operations BV.
- ↑ "Wind Server". Ziton A/S.
- ↑ "Board offshore cranes". Liebherr.
External links
[edit]- Liebherr: Board offshore cranes - Liebherr-International Deutschland GmbH