In the earl morning of 17 November 2020, a bulk carrier Cape Kallia was transiting the Lombok Strait heading for Port Hedland, Australia. At around 03.00 local time (LT), whilst she had passed the Lombok Strait, an unknown object appeared on the screen.

The unknown object was a fishing vessel Kerinci Indah 02 heading westerly. The fishing vessel had no Automatic Identification System (AIS), therefore no information was received by the bulk carrier. At the time, the course overground (COG) and speed of Cape Kallia were approximately 167° and 10.3 knots, respectively.

Based on the previous experience, the crew members of bulk carrier felt confidence that the unknown object which was deemed as a fishing vessel would give way to the bulk carrier. The Cape Kallia was then kept on her course. Similarly, the fishing vessel did not show any change on her heading.

A half hour later, both vessels were approaching. In the close quarter situation, the Cape Kallia took the action hard to port. Shortly after, the Kerinci Indah 02 listed to the port and capsized on the starboard side of the Cape Kallia.

The National Transportation Safety Committee (KNKT) identified several safety issues that had contributed to the accident and issued safety recommendations to prevent a recurrence in the future. The inappropriate mental model amongst the officer on watch of Cape Kallia regarding the habit of fishermen while dealing with the fishing vessels as well as serious issues on board the Kerinci Indah 02, particularly the insufficient manning of Kerinci Indah 02 and the fatigue on the skipper on duty of Kerinci Indah 02, have shown as the contributing factors in this accident. Therefore, a number of safety actions are essentially needed to prevent the recurrence of the same accident because of the same factors in the future.