Development in Dredge equipment in the last decade

Dredging 2012 , San Diego, 2012

Ruud Ouwerkerk and Sergio Ooijens

A decade of progressTechnology push and market pull

This presentation intends to illustrate a few items

Project demands

Land reclamation

Beach reclamation

Port construction

Waterway maintenance

Land reclamation

Lakes and reservoirs

Mining

Environmental

Offshore dredging

New technologies

For example:

Larger vessels

Improved dredging installations

Etc.Regulations

Project constrains

Etc.

Higher efficiency

Higher accuracy

Higher uptime

Etc.

Land reclamation and port construction

High volumes and low cost priceEconomies of scale: larger vessels with higher technologies. Leading to a 50% reduction in USD/yr3

Economies of scale

Larger hoppers with new technologies:The 40,000 cubic yard Congo River with a one man bridge, using artificial intelligence

Cutter suction dredge J.F.J. de Nul – 2003 d’Artagnan - 2005Ambiorix - 2012 Athena – 2012Artemis- 2013

Some recent progress in dredge equipment illustratedWEDA 32 & TAMU 43 - June 11, 2012

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Larger cutter suction dredgesdelivered during the last decades

Jumbo Class Cutter Suction Dredges

DREDGE

Characteristics

LEONARDO DAVINCI

1986

MASHOUR

1996

AL SADR1999

JFJ DENUL

2003

D’ARTAGNANAMBIORIX2005/2012

ATHENAARTEMIS2012/2013

Tot. power inst. 20,532kW 22,380kW 20,507kW 27,150kW 26,200kW 24,702kW

Cutter power 5480kW 2400kW 2200kW 6000kW8160hp

6000kW8160 hp

6000kW8160 hp

Dredge depth 32m 35m 27m 6.5/35m 35m 30.7m

Manning 41 73 30 60 43 50

Barge loading Yes No No Yes Yes Yes

Offshore dredging

Extended dredging depth: up to 140 m

The larger dredges can go deeper.

Smaller dredges can extend the dredging depth with the tele-tube

Dynamic trackig: higher accuracy

Cutterd dredgers working in waves

Development of dredge equipmentis no longer driven by economyWEDA 31 & TAMU 42 - June 7, 2011

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DODO Simulation Software

Cutter suction dredge Athena’s spud force analysis during dredging operations in simulated wave conditions

Can the limits be extendedor at least safe guards be built in?

Conventional spud carrier csd JFJ de Nul

Longitudinally buffered spud carrier with wires csd d’Artagnan / Ambiorix

D’Artagnan - Spud carrier with wire compensation system

Just an impression to put man and machine in perspective: spud tilting

Spin-off for smaller standard dredgeshere: IHC Beaver 6518 ( a 26”discharge)

the “SPUD GUARD”

Development of dredge equipmentis no longer driven by economyWEDA 31 & TAMU 42 - June 7, 2011

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“Spud Guard” cylinders as mounted on the IHC Beaver step spud carriages

Waterway maintenance

The WILD DRAGON ready to go

WILD DRAGON(left) Excavation drag head(right)s.g. 1.38 s.g. 1.08

2

Hull shape: 85 m vessels

1

3

4

5

4550 ton,

1994

5970 ton,

1997

6570 ton,

1999

7150 ton,

2003

8000 ton,

2004

Demand from the market: health and safety

Quarters isolated from noise and vibrationsManning: J.F.J. de Nul - 60

d’ Artagnan - 43 Athena - 50

The engine and control cabin are placed on dampers for improved comfort and reduced noise.

Comfortable operating cabin also on smaller dredgers

Improved ergonomics for operating cabin and dredger controls;

Unprecedented 3600 for the operator

Comfortable operating cabin: high efficiency

New simulator technologyOnline learning

Training

New technologies over the past decade, some highlights on the dredging installation

Cutter Special High PressureMedium Pressure

“Rock special” design effort integrated with “the Curve”, a pump development to improve

suction and wear of a complete pump

Wear resistant suction / discharge hoses

“Max Top”Bucket Hose

“Bone Crusher hose”with innovative steel rings, not tearing out

New cutter heads: the Lancelot cutter

Not only on our standard cutters but also successfully implemented on a large mining dredge in Africa

Online monitoring

• Follow dredger activities from any place in the world

• Online support by experts

Development of dredge equipmentis no longer driven by economyWEDA 31 & TAMU 42 - June 7, 2011

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CONCLUSIONThe change in the market has created new technologies, but new technologies also have created new markets