The tragic sinking of yet another asylum-seeker vessel, this time in the Sunda Strait between Java and Sumatra and with an estimated 150 people on board, has brought into stark relief the issue that will next week bring a trio of Australian ministers to Jakarta.

This immediate aftermath of this boat sinking in the early hours of Wednesday demonstrates why improving arrangements between Indonesia and Australia on boat rescue (labelled "safety of life at sea") is particularly urgent.