Naui Open Water Scuba Certification Study Guide Rated A+

it is recommended that a dive team diving from an anchored boat begin their dive: {Ans: against the prevailing current}Sound travels about ______ times faster in water than in air {Ans: 4}The primary purpose of the exposure suit is to: {Ans: preserve body heat during dives}The minimum surface interval required to avoid decompression after a dive to 88 ft for 18 minutes, followed by a dive to 78 ft for 23 minutes is... {Ans: 4 hours, 49 minutes Table 1: Look at 90 ft (for the 88) and go across to 21 minutes, go down to find letter group F Table 3: Go to 80 ft (instead of 78), look at the red numbers in that row until you find one close to 23 feet. This would be in group A Table 2: look at both letter group F from table 1 and A from table 3 to find the minimum hour (the lower number) In this case its 4 hours and 49 min.}The dive knife is used primarily as a _____ for digging, cutting, pounding, and prying. {Ans: tool}The _______ line is the direction of travel line on the compass {Ans: lubber}If a