Date: May 19, 2013 Repetitive Dive: 1 of 1
Time In: 08:56 Time Out: 09:24 Time: :28
Dive Location: Sharks Cove, Oahu, HI.
Purpose: DMC – Open Water Dive 4
Dive Type: Shore Environ: Ocean / Salt
Conditions: 1-3′ Surf Wt: 21lbs
Air Temp: 81° F Btm. Temp: 79° F
Max Depth: 25′ Average Depth: 17′
Safety / Decompression Stops: None
Start PSI: 2,974 End PSI: 1,665 Air/EANx: 21%
Exposure Protection: 7-Mil Full Wetsuit, Hood, Boots, Gloves
Equipment: 3cf Spare Air, Dive Light, Scuba Pro Jet Fins
The surf had come up a little from yesterday, which meant that the visibility would not be the greatest, and ended up being only about 20-30 feet. Since we had already completed 3 of the 4 required Open Water Dives, the students were given the option of making a second dive today as a “fun dive”. Since the visibility had gone down from yesterday, and the surf had come up a little the students chose not to do the additional “fun dive.
For the last dive of the students Open Water Diver course, Open Water Dives we went back to the sandy area at the center of Sharks Cove so that they could perform their required skills. Afterwards we took them on a short tour around the area, again taking them over rocks which made them go into shallower water to see if their buoyancy had improved.
One student still struggled with his buoyancy and used a lot of air because he was constantly inflating and deflating his BCD to compensate for his poor buoyancy. When he was too low he would air his BCD up, making him rise too fast, then he would notice his mistake and dump all the air out making him crash back to the bottom.
After watching this a few times to see if he would grasp the concept of what he was doing incorrectly on his own apparently he was not getting it so when he was on the bottom I signaled for him to add just a little bit of air to his BCD, when he did that he rose just off the bottom so I signaled that it was good, then motioned with my hands to use breath control to rise up a little and to sink a little. He seemed to understand and performed as I showed him, but then when we started the tour once again he was back and forth from about 5 feet to the bottom like a ping-pong ball. Hopefully with more practice it will start to click for him.