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USN Decompression Tables & Procedures.pdf - Watchuseek, World's ...

USN Decompression Tables & Procedures.pdf - Watchuseek, World's ...

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Special table rule:<br />

SI Special Rule-1 Rule<br />

– If a repetitive dive is to the same or greater depth than the<br />

previous dive and the RNT from the RNT timetable is<br />

greater than the ABT or ESDT, you may compute the<br />

repetitive dive using the ABT or ESDT time<br />

– Example: 60’/30 = Group F. Up to 45 min. SIT = Group F.<br />

Group F to 60’ before 46 minutes SIT = 36 minutes RNT.<br />

Use 30 minutes for RNT

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