Keppel Singmarine has boosted its orderbook with a fresh contract for three trailing suction hopper dredgers ordered by Jan de Nul.

The Belgian owner will pay SGD 100m ($73.6m) for the newbuildings, with the first two of them expected to be completed in the second half of 2018.

The third dredger is optional and will require six-months of notice from Jan De Nul.

Abu