Collect And Analyze Data66

6-5.1 Information Gathering 6-7

6-5.2 Planning Data 6-7

6-5.2.1 Object Recovery 6-7

6-5.2.2 Searching for Objects or Underwater Sites 6-7

6-5.2.3 Identifying Operational Hazards 6-8

6-5.3 Data Required for All Diving Operations 6-8

6-5.3.1 Surface Conditions 6-9

6-5.3.2 Natural Factors 6-9

6-5.3.4 Type of Bottom 6-13

6-5.3.5 Tides and Currents 6-14

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