:chuckle:Strong current; 5min & 50bar consumed to pull yourself on the downline/grappling hook to 48m depth; murky & variable visibility at the bottom; wreck heavily damaged by aerial bombs, sunk-in-action & capsized to port (spatial orientation & entanglement hazards upon penetration: decks are now overheads --and overheads now are decks, engines/boilers/shaft-gearing/heavy machinery all precariously hanging on the ceiling). . .
Helium/Oxygen gas supply logistics & dive support challenges; belligerent subsistence fishermen at divesite; post 2004 Indian Ocean Tsunami coastal infrastructure damage; post Sri Lankan Civil War political instability.
i.e.) All a typical HMS Hermes Expedition. . .
Sorry but could not stop myself...