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WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

Ship-to-ship (STS) transfer operation

marine

It is an operation where crude oil or petroleum products are transferred between seagoing ships moored alongside each other. Such an operation may take place when one ship is at anchor or when both are underway. In general, the expression includes the approach manoeuvre, berthing, mooring, hose connecting, safe procedures for cargo transfer, hose disconnecting and unmooring.

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