Design Rationale EcoDelta
This innovative LNG fueled Trailing Suction Hopper Dredger with a capacity of 5,500 m3 for dredging company Van der Kamp BV from Zwolle, The Netherlands is built in 2017/2018. The main purpose of this dredger, that incorporates an LNG tank of approx. 300 m3 and 4 Dual Fuel main generator sets, will be maintenance dredging in ports like Rotterdam, but also the mining of sand and gravel.
The process of building this ship has had an intensive preliminary phase. Conoship participated in the feasibility study ‘Dredging on LNG’ (TKI Gas) as early as 2013 and then, together with Van der Kamp, set up the feasibility study ‘Refit TSHD Rhine Delta to LNG Dual Fuel/electric installation’. The technical feasibility turned out to be a major challenge, partly due to the space in the engine room, the positioning of the LNG tank and the welding and cutting on deck while dredging on LNG. The conclusion reached in 2015 is that a refit will become too complicated.
The first discussions about a newbuild dredger took place in 2015 and the ship was delivered at the end of 2018.
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|Length over all||134.10||m|
|Length between perpendiculars||120.08||m|
|Depth to main deck||8.35||m|
|Installed power (4 dual fuel generator sets)||7,600||ekW|
|LNG tank capacity (approx.)||300||m3|
|Propulsion||2 × 2,300||bkW|
|Bow thruster||2 × 500||bkW|
|Inside diameter drag arm||1,000||mm|
|Maximum dredging depth||37.0||m|
|Output in board dredge pump||1,350||bkW|
|Output jet pumps||2 x 450||bkW|
|Output discharge pump||2,700||bkW|