International Dredging Review

International Dredging Review

VOSTA LMG has received a contract for a complete engineering and component package for a trailing suction hopper dredge for Dutch Dredging BV (Baggerbedrijf De Boer b.v.) in the Netherlands. The complete order consists of the design and engineering of a 2800-cubic-meter trailing suction hopper dredge including the delivery of the dredging equipment propulsion systems electrical installation automation hydraulic installation navigation and communication systems. The vessel will be built under Vosta LMG supervision at the Ben Kien Shinco Shipyard in Hai Phong Vietnam.

This shipyard is part of the Vietnamese Shipbuilding group Vinashin. Vosta LMG and Ben Kien Shipyard have co-operated before for the construction of two cutter suction dredges.

The dredge will have a bulbous bow for optimum speed and fuel economy. Special measures have been taken to increase propulsion efficiency and to reduce noise and vibration.

The dredge will be equipped with a 800-millimeter SB suction pipe with a dredging depth of 30 meters. The vessel will be equipped with 12 bottom doors and a MK-3 Vosta LMG bow coupling for discharge purposes.

Two VL 750 dredge pumps will be installed as well as a number of VL standard gate valves in various diameters. One pump will operate as the dredge pump and the second one as delivery pump. The proprietary dredge automation modules include suction pipe monitoring and control draft and load monitoring production monitoring dredge control and load calculation.

Vosta will supervise the construction in Vietnam including installation and assembly of critical dredge components and other key components such as the hydraulic system. The company will provide crew training.

Keel laying will be in September 2007 in Vietnam at Ben Kien’s shipbuilding facilities and Dutch Dredging will take the vessel into operation in the summer of 2008.

Specifications: Dutch Dredging Dredge

Hopper capacity: 2.800m³

Length overall: 77.15m

Breadth: 15m

Depth: 5.7m

Draught (on dredging freeboard): 5.3m

Dredging depth: 30m

Deadweight: 3341dwt

Power installed: 4480kW

Speed: 11 kt

Trailing suction pipe diameter: 800mm

Accommodation: 13 persons

Classification society: Bureau Veritas