2.A diver plans a dive to 35 meters for 13 minutes/110 feet for 15 minutes. Upon surfacing he discovers that he misread his timing device. He was actually at depth for 21 minutes. Which of the following procedures should he institute in this situation.

A. Reenter the water and decompress at 5 meters/15 feet for 15 minutes; avoid diving for 24 hours.
B. Reenter the water and decompress at 5 meters/15 feet for 8 minutes; avoid diving for 6 hours.
C. Remain on the surface, rest, be monitored for signs of decompressions sickness, breathe 100% oxygen, and do not dive for 24 hours.
D. Immediately seek medical attention and recompression treatment.


For those of you who were at the meeting, Yes, it should have been 110 Feet not 100 Feet. Sorry for the typo.

:o

Ok Guys here is the answer. It is one of those exceptions on the back of the dive tables.

C. In this scenario the diver has exceeded the NDL substantially. The scenario in this question is easily avoided by always taking a safety stop at the end of the dive, double-checking your decompression status while you wait. If an oversight is discovered the safety stop can them become an emergency decompression stop.

Hope you learned a little from this question and answer.

Mike