Seven crew are reported missing after a general cargoship sank off Indonesia.

The 600-dwt Multi Prima I (built 1989) went down in the Bali Strait on Thursday night.

Seven other seafarers were rescued, the Coconut website reported.

Multi Prima 1 had been transporting building materials from Surabaya to Waingapu, but encountered two-metre swells.

The crew jumped into the sea, some with life jackets and some holding on to flotsam.

The survivors were in the water for four hours until another vessel reached them.

One seafarer, Bob Chris Butar-Butar, told the Detik daily: “The position of the sinking boat was on the border of Bali and Sumba waters. The hull of the ship immediately broke after being hit by the waves.

“During that time, we floated in the sea. Fortunately, the boat approached and we were evacuated.”

He added of his missing colleagues: “I am sure they are still alive, because just before the ship sank, we were together. But maybe they were carried by waves and scattered away. I hope the officers continue the search.”

The vessel was operated by Namsurya Citrasari Lines of Indonesia.