This Japanese army cargo ship is named Helmet Wreck because of the rows of helmet stacks in the wreck that have fused together and are still within the stern hold. The wreck is thought to have sunk in 1944 and is a fantastic historical exploration dive with lots of things to see.

Although it is not suitable for penetration, the dive is only suitable for divers with wreck experience. The wreck is around 60 metres long, with the stern at around 15 metres whilst the bow is much deeper at around 35 metres deep. The bomb that sunk the ship ripped the starboard side of the boat open but it did not detonate the depth charges. Over 85 of them were then found intact inside the ship but these, along with all the live ammunition, have since been removed. As with all wreck dives, divers should not touch any ammunition as it may still be live.

Divers can explore the deck, which has the gun platform where two depth charge boxes are located. The propeller and rudder are also visible and were not damaged by the bomb. The main cargo hold, which also stored depth charges, can be explored and divers can see the helmets fused together, on the upper part of the deck on the port side. On the silted bottom, divers should look out for gas masks, belts, shoes, ammunition, and piles of rifles. On the bow, there are three large engines from fighter planes, and ceramic jars and other electronic equipment. Divers can also see Kirin bottles, an old log, medicine bottles, brass lanterns, and some old sake bottles.

It is worth doing more than one dive on the wreck so that divers can also have a look at the marine life and corals that have blossomed on the ship. There are many soft and hard corals housing pipefish, ribbon eels, stonefish, and lionfish to name a few.