- Damen,meanwhile,estimatesthattheair-lubricationsystemwillincreasethecostofbuildinga110-metrecargoshipbyonlyabout5%.DamenShipyardsGroup,aDutchfirmthatbuildsmorethan150shipsayear,hasfoundthatsuchcavitiescutfuelconsumptionbyabout15%ona60-metreshipthatca...
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