Drydocks World uses FORAN to engineer jack-up crane barge

Drydocks World, Dubai, has used Sener’s FORAN shipbuilding CAD/CAM in developing the engineering of a new jack-up crane barge that the shipyard is buildingfor Mumbai,India, based construction group, Afcons Infrastructure.

The SEP-SAMRAT barge is a non-propelled self-elevating platform, with a total lifting capacity of almost 2,950 tons, using four legs and a corresponding jacking system. It is also equipped with a central main crane and auxiliary systems, such as mooring winches, diesel generators, hydraulic power packs and transfer pumps.

All the production drawings have been created using Drydocks World’s in-house engineering capability, the FORAN System being the main toolset.

From the initial design to the final production drawing, FORAN ensures a seamless and comprehensive design environment, where every single component is fully integrated in the 3D product model.

With a length overall of 49.5 m, a breadth of 25 m and a draft of 2.5 m, the offshore barge is classified by Bureau Veritas, with class  I + HULL + MACH, Offshore Self-Elevating Unit, Special Service / Construction Works, Indian Coastal – Summer Zone Transit, + ALM.

A feature of the design is the leg height of 60 m. The elevating spuds, which are pipe sections with an outer diameter of 2.2 m of outer diameter and a thickness of 45 mm, are actuated by individual hydraulic jacking systems, each capable of 1,055 tons of lifting force.

The main crane is a Manitowoc 1800, with a rated capacity of 600 tons and a boom length of 97.5m. There are two generators,each rated 335 kW each one, and an emergency generator rated 130 kVA. Mooring is ensured by means of six winches, each one rated 25 tons of pulling force.

May 26, 2012