To main content

Maintenance dredging, Yangon River

Located close to the city centre on the Yangon River, Yangon Port has been the main port to Myanmar since colonial times. Currently, the port has capacity for vessels of up to 15,000 –20,000 DWT and works are scheduled to increase the port’s capacity for vessels up to 35,000 DWT.

Scope of work

Boskalis mobilized from Indonesia the TSHD Cornelis Zanen with a hopper capacity of 8,600 m3. The channel was deepened to a minimum depth of 6 m CD over the full width of 100 m. In addition, the approach channel was widened to allow vessels more manoeuvring capabilities when entering the inner port.


Tight timeline Dredging operations started immediately on the arrival of Cornelis Zanen, leaving limited time for project preparation. Working in close cooperation with the Myanmar Port Authorities and working with local subcontractors and suppliers, the Boskalis project team finalized the bathymetric riverbed survey measurement campaign within several days of signing the contract. River conditions Navigation from the pilot station 32 km seaward of Elephant Point is generally on the flood tide, and to ensure sufficient depth, crossing both the inner bar and outer bar is timed for high tide. The average tidal range is about 6 m at spring tide and 2.5 m at neap tide. While waves in the Yangon River do not hinder maritime operations, the current velocity of 4 to 6 knots at spring tide has to be controlled. As the channel width of 100 m at Monkey Point is relatively limited, navigation and particularly the dredging operations demanded close attention. Safety and cooperation with other parties The Boskalis No Incident and No Accident (NINA) safety program was implemented and within the short time period available, all parties were informed and were fully compliant with the high safety standard throughout the project. 


Boskalis completed the dredging works in compliance with the contract requirements and in partnership with the Myanmar Port Authority. The works were completed within the budget and the required time frame without accident, incident or spill.

Related projects

Selected filters

Construction of
Marker Wadden

Boskalis has been awarded the first phase of the Marker Wadden development in the Netherlands. The project includes the construction of an island with underwater landscaping. The Marker Wadden are natural islands that will be developed in the Markermeer lake in the years to come. They will provide a major boost for the ecological quality of the Markermeer lake. The natural shores of the islands will give fish more opportunities to spawn and feed. As a result, large numbers of birds such as terns and waders will return to the area because there will be more food for them. The construction of the Marker Wadden will transform the map of the Netherlands.


Outer harbor channel widening, Adelaide.

The Port of Adelaide is the primary port in South Australia, located at Outer Harbor. The port is operated by Flinders Ports Pty Ltd (Flinders Ports) and handles both container and cruise vessels, contributing significantly to the State’s economic activity. Flinders Ports identified the need for an upgrade of the existing infrastructure driven by the emergence of Post Panamax class vessels. To meet this growth the existing channel had to be widened to accommodate vessels with a maximum width of 49 m without operational restrictions. Flinders Ports contracted Boskalis to execute the dredging works.


Johan Sverdrup, transport.

Samsung Heavy Industries Co., Ltd. is Equinor’s Fabrication and Transport contractor of the Johan Sverdrup project. Boskalis has been awarded by Samsung as transportation contractor for this project.



The IJsseldelta project is part of the national Room for the River program, which comprises over 30 measures aimed at upgrading the flood defenses in the Dutch river areas. The project involves lowering the summer bed of the Lower IJssel river along a length of 7.5 kilometers near the town of Kampen and creating a bypass to the south of Kampen.



Allseas Engineering had been awarded with the contract to support partly with construction of the offshore natural gas transmission system comprising two 48” diameter pipelines from Russia to the Baltic through Germany (NPSP2). The installation of the NSP2 pipeline has been performed by Charterers pipelay vessels: Solitaire, Pioneering Spirit and Audacia.

Port expansion, Tuas Mega Port Singapore

Boskalis is part of a consortium that won a contract related to the construction of the Tuas Mega Port in Singapore. After Shanghai, Singapore is not only the world's largest container port, it also handles 50% of global crude oil production and it is the planet's busiest transit port. The port is the economic motor of Singapore, which is constantly struggling with a shortage of land.