Advanced Open Water

The Advanced Open Water Diver course at Correct Diving extends the certified diver's range to 30 metres and opens up the I.R.T.D.A. technical diving programme — which at this base includes deep air, wreck diving, and cave diving tracks. The course runs 24 hours total and requires an OWD brevet plus at least 5 logged dives at registration (16 before final certification).

Theory covers night and low-visibility diving, natural and compass navigation, search and recovery operations, deep dive planning using both dive tables and multi-level computer profiles. The written exam has 60 questions. Open water sessions across three modules work through natural navigation, compass navigation (reciprocal course, rectangular pattern, triangle, triangulation), night diving with compass, ascending and descending on a line, and deep dives with computer profiling.

The night diving module is specific: one minute lights-out, five minutes on backup lamp, hand signals in a torch beam — practical skills done on the actual bay and reef around Glavotok. The search and recovery module covers both small and large objects using reels and a lift bag, with gas volume calculations built into the planning exercise.

Minimum age is 15. The course is the prerequisite for the Rescue Diver track, and completing it with the subsequent Rescue certification opens access to the Divemaster programme. Krk island's varied dive sites — accessible by the base's own boats — give the advanced dives terrain worth exploring.