Patris Wreck (Kea, permit-only guided dive)
Patris was a Greek paddle steamer lost in 1868 on a reef off Kea's Koundouros area; the wreck lies at 28–54 m. Kea Divers says no descent line is needed and no decompression stops are required, and asks for at least Advanced Open Water (deep certification to 40 m). It is part of the Kea Underwater Historic Site and dived only on guided, non-penetration dives.
Tiefe: 28–54 m