Ravestein Builds Backhoe Dredger for Boskalis
The largest and most efficient backhoe dredger in the world, Magnor, has been built by Ravestein for Boskalis.
At 72.0m x 20.4m x 5.5m, the Magnor is larger than any other backhoe dredger. Two large deck cranes are fitted for work on- and changing of the equipment (boom, stick and bucket) of the excavator. The vessel comprises all the necessary equipment such as a large deck workshop, stores, machinery and an accommodation fully outfitted to receive a crew of eight.
The excavator, based on a Caterpillar 6090, was completely re-built to suit the needs of Boskalis. The total installed power on the excavator is 4,100 kW. The bucket of the Magnor will be able to lift no less than 67,000 kg of dredged material. The complete lifting section with the boom, the stick, the hydraulic cylinders and the bucket were developed by Boskalis. An interesting innovation is the use of water cooling for the engines and hydraulics. That delivers huge improvements in terms of fuel consumption and, above all, noise reduction.
The detailed design of the dredger was provided in-house by Ravestein in close cooperation with the Boskalis new build team. The dredger and all its components are built according to Bureau Veritas classification.
The backhoe dredger has been built at the Ravestein Shipyard in Deest, the Netherlands within a 14 month period from contract signing to delivery.