AggieDiver
Contributor
Yes, the plane does fly high enough to need to worry about it...approximately 7500 feet the last few times I have been back and forth. I think if you are conscientious about your dive habits that morning and while on the Kittiwake in the afternoon, 18 hours is probably fine. 18 hours is what LCBR typically insists on when deciding which dives you can dive on your last dive day. Obviously, if you do two dives in the AM on GC and push the very edge of your NDLs and then push the NDLs again on the Kittwake dive, 18 hours might not be enough. But if you are smart and at least somewhat conservative in your profiles, there is not likely to be a problem.