The technology group Wärtsilä will supply a unique and patent-pending LNG fuel storage and supply system for two new trailing suction hopper dredges. The ships are being built by Kepppel Offshore & Marine for Van Oord. The order was placed with Wärtsilä in the second quarter of 2019.
The Wärtsilä system comprises two 640-cubic-meter (837-cubic-yard) single-shell polyurethane insulated storage tanks, featuring new “In Line Tank Connection Space” (ILTCS). This contains the process equipment that is mounted in front of the tanks, instead of the usual on top installation. For on-deck applications this benefits the vessel’s view lines for better navigational safety, while also reducing the risk of damage to equipment that is typically installed on top of a single-shell tank. For below deck installation, the ILTCS improves fuel storage volume efficiency by avoiding the need to have the process equipment on top of the tank which simplifies installation of the LNG system.
The Wärtsilä equipment is scheduled for deliver to the yard in mid-2020 for the first vessel and in autumn 2020 for the second.