A Rand Logistics bulk carrier grounded off Michigan, shutting a portion of the Saint Lawrence Seaway system.

US Coast Guard Lieutenant-Junior Grade Sean Murphy tells TradeWinds that the 20,100-dwt Calumet (built 1973) remains hard aground as the agency awaits a salvage plan from the New York shipowner's Grand River Navigation subsidiary.

In the meantime, the St Marys River is closed to commercial traffic between the Soo Locks and 6 Mile Point.