Built in Japan in 1969 as the Shoyo Maru, she became the Giannis D in 1980. Struck the northwest corner of Abu Nahas at full speed on 19 April 1983 while carrying sawn softwood from Rijeka to Jeddah, a navigational error. No casualties. She lies on her port side in three sections. The engine room is considered one of the best recreational penetrations in the Red Sea: accessible, intact machinery, glassfish, and a 90-degree tilt that makes every corridor feel like a different dive. Look closely at the bow: the word 'Markos' is visible through the encroaching corrosion, an earlier name used for the vessel. Locals in the area still sometimes call her the 'Dana' after the large 'D' still visible on the smokestack, a reference to the Danae shipping company.

• –Engine room penetration, best on the reef
• –Mast at 4–6m, perfect safety stop
• –Three sections: bow, amidships, stern
• –Glassfish throughout the interior
• –Resident giant moray eels

A P&O mail steamer carrying cotton, copper plates, 34 passengers, and £40,000 in unfinished gold coins for the Indian Mint. She struck the reef on 12 September 1869. The captain chose not to evacuate immediately, believing the damage minor. Overnight on 14 September the hull broke apart, killing 31 of the 210 aboard. The wooden decks have rotted away over 155 years, leaving the iron skeleton open and accessible, you swim freely through the ribcage. Dense stone and leather coral on every surface. 19th-century wine bottles remain in the silt, still sealed with their original corks. Alongside them: oval bottles of ‘London soda water’ in distinctive opaline glass, each with ‘No. 2’ engraved in the base. Most of the gold was recovered by helmet diver Stephen Saffrey in October 1869; an estimated £8,000 is believed to remain.

• –Oldest wreck on the reef by nearly a century
• –Iron skeleton fully open, no penetration gear needed
• –155 years of dense stone and leather coral growth
• –Victorian long-bladed propeller at depth
• –19th-century wine bottles in the hull silt

Carrying 3,700 tonnes of Italian granite floor tiles from Iskenderun to Jeddah. Struck the reef in August 1981 after a navigational error with the captain off the bridge. No casualties. The Italian tiles remain scattered across the seabed and stacked in the holds. Identity note: physical evidence, engine serial numbers, anchor chain position, and derrick placement, suggests this wreck may actually be the MV Marcus, a different cargo ship carrying identical cargo that struck the same point of the same reef in 1978. The wreck is listed in dive databases as 'Chrisoula K (Marcus).' The dispute is unresolved.

• –Italian granite floor tiles scattered across the seabed
• –Bow barely breaks the surface
• –Natural light through hull cracks throughout
• –Engine room well preserved at 26–28m
• –Identity dispute: Chrisoula K or Marcus?

The largest and deepest wreck on the reef, and the least visited. Built in Germany in 1952, the Kimon M was carrying 4,500 tonnes of bagged lentils from Iskenderun to Bombay when she struck the reef in December 1978. The lentils dissolved long ago. The bow is now a scattered debris field; the stern and engine structure at 28–32m are the most intact sections. Limited current flow around the wreck has restricted marine growth compared to the other three. Dive this wreck first in the day before accumulating nitrogen on the shallower sites.

• –Deepest wreck on the reef, stern at 30–32m
• –106 metres long, the largest of the four
• –Least visited and most broken up
• –Dive first in the day for nitrogen management
• –Resident morays and batfish throughout