The more powerful of the two cranes – Admiral 100 – has a maximum lifting capacity of 100t and a maximum radius of 63m. However, with the auxiliary hoist of 16t, a radius of 66m can be reached. This crane will be used on the slipway of a shipbuilding yard.
The smaller crane – Admiral 50 – has a maximum lifting capacity of 50t for the main hoist and a maximum radius of 45m. This crane also has an auxiliary hoist of 10t up to 48m and will operate on the fitting-out quay.
Both cranes are gantry slewing with large diameter tubular towers, roller slewing bearings and articulated luffing jib systems.
Kranbau Eberswalde said that modern frequency-converter drives on the cranes not only take care of a smooth manoeuvring of the ship’s components, but are also energy efficient and do not place such a heavy demand on the shipyard’s electrical systems as cranes with traditional controls.
The use of an articulated luffing jib system for shipyard cranes is not new for Kranbau Eberswalde. Four cranes with maximum lifting capacities of 150t have been operating in one of Hamburg’s shipyards for many years.
In December 2005, a shipyard crane with a 60m radius was completed for a Croatian shipyard in Split. At the present time, a 100t slewing crane with a maximum radius of 72m is under construction for a Danish shipyard.
Kranbau Eberswalde is also currently in the process of manufacturing shipyard slewing cranes of the level luffing type. Consequently, a French and a German shipyard will each receive one level luffing crane and a Russian customer will acquire two slewing cranes for a floating dock.