Thirty-eight people died when SS Iron Crown was sunk by a Japanese submarine during World War II. Its underwater grave has now been discovered 77 years later.

World War II freighter Iron Crown was sunk by a Japanese submarine in 1942. Image supplied: South Australian Maritime Museum

This article originally appeared in ABC Online.

The wreckage of an Australian freight ship sunk by a Japanese submarine during World War II has been uncovered by archaeologists off the coast of Victoria.

The ore freighter SS Iron Crown sank within 60 seconds in June 1942 after it was hit by a torpedo while travelling through Bass Strait, killing 38 people.

The shipwreck was discovered by marine archaeologists aboard CSIRO research vessel Investigator, using sonar equipment and a special drop camera.

Maritime archaeologist at Heritage Victoria Peter Harvey said he hoped the discovery would bring closure to the families of the seamen who died.

“The ship is in a really good state of preservation, although I’m pretty sure the stern of it, where it was hit by the torpedo, was pretty broken up,” he said.

“The archaeology of these sites enables us to finally find out what happened and why it happened.

“It tells us the human story of the wreck.”

SS Iron Crown was a 100-metre-long freighter that was chartered by BHP to transport ore from Whyalla in South Australia to Newcastle in New South Wales.

There were 43 crew from the Australian Merchant Navy on board, but only five sailors survived.

According to the Heritage Council of Victoria, the survivors managed to grab lifejackets, jump clear of the ship and cling to wreckage until they were rescued by SS Mulbera.

“There were roughly 13 Japanese submarines operating on the Australian coast around that time that resulted in quite a number of casualties that nobody really knew about until well after the war,” Mr Harvey said.

“The loss of 40 lives is a terrible thing in any measure, but I think if it had been common knowledge at the time, I think Australians would’ve been quite alarmed.

“I don’t think the majority of the population was aware that there was so much enemy activity off the coast of south-eastern Australia.”

Chief Scientist Emily Jateff.

Voyage chief scientist Emily Jateff from the Australian National Maritime Museum said the shipwreck was found 100 kilometres off the Victorian coastline.

“The wreck of Iron Crown appears to be relatively intact and the ship is sitting upright on the seafloor in about 700 metres of water,” she said.

“We have mapped the site and surrounding sea floor using sonar, but have also taken a lot of close-up vision of the ship structure using a drop camera.”

Ms Jateff said it was an important discovery.

“The fact that so many lives were lost … was something that hit home with all crew working working onboard Investigator.”

The finding has been reported to the Australian Government and a memorial service will be planned for the site.

‘One of the saddest’ parts of seaman’s life

Tasmanian man George Fisher worked on the Iron Crown as a deck boy when he was 18, and was one of the five survivors.

He was the last surviving crew member before his death in 2012.

In an interview with the Australians at War Film Archive in 2003, Mr Fisher was asked whether the sinking of the Iron Crown haunted him.

“No, not really,” he said.

“That’s a very sad part of my life, perhaps. One of the saddest.”


  1. So any sign of the jap sub that is meant to be sunk off the Vic coast near Seaspray? Cannot find any history of it but it is talked about by veterans, just like the Zero that was operating out of RAAF Base East Sale.

  2. This is great work and adds to the other wreck discoveries. As a child (and since), I have often wondered where the dump zones were off the SE coast of Aust for the war-surplus planes. I remember the news photos of aircraft carrier decks crammed with planes, leaving port for unknown sea-burial sites for these former fighting machines. I would think that the carriers would slow steam ahead during the dumping phase, so the wreckage is unlikely to be concentrated on the sea bed.

  3. My Dad used to talk about the Japanese subs working in Bass Strait and the sinking of Iron Crown, although I don’t recall him specifically naming her, just that they sunk a boat in Bass Strait. He was a Lieutenant in the Navy and was seconded to the British Navy and spent 1944 – 45 in the English Channel on a minesweeper.

  4. So could you find MH370 with that tech?

What do you think?

We love hearing from you, but we have a few guidelines.