Dynamic Operation in Dredging & Offshore (DODO)

Problem: dynamic forces at sea

Wind and swell subject dredging and offshore vessels to dramatic dynamic forces. Cutter ladders, suction tubes, spud carriers, lay pipes and risers ‘connect’ the moving vessel to the rigid sea floor, or swing freely. Dynamic forces are well in excess of the design forces and are magnified by the cutting process and slurries in cutter ladders, suction tubes and risers. Work boats and barges operating nearby also have an impact. These factors determine the operational window in sea conditions. With operations tending to go farther offshore and to greater depths, IHC Merwede’s customers are running up against this issue more and more. A reliable understanding of dynamic forces can mean the difference between getting a job or not, between a reasonable return on investment or a loss, and between damage and injuries or safe operations.

Solution: DODO

To provide its clients with the answers to these questions, IHC Merwede started researching vessel dynamics, the connection to the sea floor and the presence of other ships in a project called DODO (Dynamic operation in Dredging & Offshore). The project aims at studying dynamics in the period range of 1-60 seconds. Three scientific disciplines are involved: hydromechanics, multi-body dynamics and soil mechanics. Specialised models and commercial software were not made with these combinations in mind and suffer from inherent limitations. They cannot be used for the adaption of more types of vessels or equipment. DODO, at the other hand, comes up with a tool for the reliable, flexible, easy and fast modelling of multiple vessels and equipment in specified and adjustable sea states. ‘Easy and fast’ means ‘within days’. And with the same ease, it can be configured for CSDs, TSHDs, crane vessels, pipe-layers and ... dangling suction pipes, for example! Play a test ...

Goals

The project DODO pursues improvements to operational behaviour, solutions to operational and accuracy problems, enhancement of the operational window, development of reliable advice instruments for operational restraints, the prevention of damage, spills and losses of slurries and technical liquids, and, of course, cost savings and improved return on investment for IHC Merwede’s clients. More info ....

News & Events

IHC Merwede reveals healthy order book

IHC Merwede successfully increased its order book in 2013 across the main sectors of its...Read more ...

IHC Merwede appoints Bram Roelse as CEO

IHC Merwede has announced that it has appointed Bram Roelse as the company’s new Chief...Read more ...

Successful naming and launch ceremony for ‘AL BAHAR’ C/D HUTA 12 by IHC Merwede

IHC Merwede has successfully named and launched the 23,545kW self-propelled cutter...Read more ...