Kimon M

Last in line along Abu Nuhas and first to sink of the four that remain, the Kimon M drove onto the reef in December 1978 with a cargo of lentils - hence the nickname - and heavy seas soon pushed her hull off the crest and down the slope, where she lies on her starboard side with the stern at about 32 meters. She is the most broken of the quartet, which is her appeal: an exercise in reading a ship from its pieces, engine and drive train exposed, deck machinery scattered, the four-bladed propeller standing clear of the sand. Fish have colonized the wreckage thoroughly, and because most day boats favor her prettier neighbors, the Kimon M often gives a group the rare Abu Nuhas experience of having a wreck to itself.

The moment you come for: The exposed engine and propeller; quieter conditions than the neighboring wrecks; strong fish colonization.

Topography: Hull lying on its starboard side down the sand slope, bow wreckage high on the reef

Entry: Easternmost of the Abu Nuhas four; dived from a mooring or as a drift along the reef base.

Hazards: Unstable plating; depth creep toward the stern; surge on the shallow bow section.

Conservation: Collapsed structure shelters dense fish life - resist moving or turning wreckage.

Nitrox: Worth it here — profiles sit in the range where enriched air meaningfully extends no-stop time (with the training to use it).