23

1

Port Development & Logistics

Dredging the Banjarmasin Port Access Channel

by

Van Oord Dredging & Marine Contractors bv

Peter van der Hulst 10 Oct 2011

Introduction

•Project Location

•Why to dredge the Barito River Access Channel

•Design Considerations

•Channel lay-out

•Result Capital Dredging

South Kalimantan

Banjarmasin

Project Location / Description

• Located at Barito River Mouth, Banjarmasin

• Channel very shallow, with high siltation rate

• Channel difficult to navigate

Requirement:

• Channel 15 km long; 100mtr wide; 6mtr deep

• Volume to be dredged: 6,000,000 cub mtr

23

2

Why dredge the Barito River AccessChannel?

• Busiest water passage for commodity transportation inSouth Kalimantan

• Many delays experienced by transport barges

• High unnecessary consumption of fuel

• Only access during high tide (depth < 3mtr at low tide)

• Only one-way traffic for 6-8 hrs/day

• In-efficient use of available transport capacity

• Improve future throughput capacity

Design Considerations

• Siltation

– Estimated at 5,000,000m3 yr

– 80% occurs during monsoon

– Coming from upstream channel

– Encroaching Western bank

• Capacity of Channel

– Before; some 40 million tonnes / year

– Desired capacity 120 million tonnes / year

Design Considerations

• Barge Sizes

– Barges upto 12,500 dwt

– Draft of barges upto 6.1 mtr

• Channel dimensions

– Base width of 100mtr allows two-way traffic flow

– Depth of -6.0mtr LAT allows vessels to navigatechannel in all tidal conditions

Channel lay-out options

23

3

Design Considerations – Cross Section Results Capital Dredging

• A straight channel, allowing easier navigation

• Channel completed on time and within budget

• New two-lane channel will allow vessel access 24hrsper day

• Larger vessels will be able to pass through channel

• First successful trial with barges before handover

Convoy with first barges on 15th Oct 2008

Thank You