A shipping data technology com­pany says questions need to be asked about last week’s hijacking of a bunkering vessel in the Mediterranean.

Data by Tel Aviv-based Windward shows ownership and flag changes made to the 846-dwt ­Elhiblu 1 (built 2015) before the ­hijacking bear similarities to the 2014 incident involving the 2,560-dwt cargoship Blue Sky M (built 1976), which was abandoned by crew with 970 mig­rants onboard.