Davidl
Guest
Alltime dive #11 
im gonna do my first offshore 100ft+ dive this weekend
- Thread starter Davidl
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ShakaZulu
Contributor
Hope you are diving with some experienced divers............ How long are you going to stay at 100ft???
OP
Davidl
Guest
Not too long, and I plan on taking it slow. Im going with my dad who is pretty experienced.
Scubamedicjoe
Contributor
well take it easy and enjoy the dive , biggest thing is to relax and enjoy it , be safe and if you have a computer use it also before the dive look at your dive tables so you have backup with depth time limit ect .
OP
Davidl
Guest
Yeah I use a computer, and will definitely keep my eye on it. I will keep in mind the dive tables, good idea about that. Only thing I am nervous about it "nitrogen narcosis", I dont know if that will be any factor or not.
ShakaZulu
Contributor
Davidl:
Sometimes it's difficult to detect. You may find yourself doing strange things that feels perfectly normal to you. That's why your buddy should be very aware of your actions. Eg. I like to blow bubbles, cause it sounds soooo nice. When you think you are getting narced, count backwards from 10-0. It will bring your mind back a little.
northcoast_diver
Contributor
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I hope your B/C is able to hold the full weight underwater of all of your lead, plus your full tank and gear. At 100 ft, your wetsuit (if you are using a wetsuit) will compress to zero buoyancy and all that weight will be solely upon your B/C-wing or B/C-jacket.
I hope you control your descent as you go down.
I hope you do a 50 ft 1 minute safety stop on your way back, followed by a 3 minute safety stop at 20 ft or longer.
100 ft is not really deep, except that a diver with only a dozen dives should probably continue to dive at 50 ft or shallower, for awhile, before going deeper, unless you are with an AOW class.
I hope you control your descent as you go down.
I hope you do a 50 ft 1 minute safety stop on your way back, followed by a 3 minute safety stop at 20 ft or longer.
100 ft is not really deep, except that a diver with only a dozen dives should probably continue to dive at 50 ft or shallower, for awhile, before going deeper, unless you are with an AOW class.
Have fun David, don't know if you get seasick but if you have any doubt, you might want to consider some form of meds. Seasickness is about the fastest way I know to mess up an otherwise great trip. Last boat I was on about 1/2 of it was puking over the side. Bet they will not forget their cert dives.
Hi David,
I don't know about the SSI recommendations concerning deep diving, but PADI recommends that you have Advanced Open Water certification before you do dives deeper than 60 ft.
A deep dive has several important safety considerations. You need to be rigid about maintaining good buddy contact - there's no running to the surface for air at that depth. You also need to be very aware that ascents from 100 ft take a little bit of time, so be sure to go slowly. Narcosis, of course, is another issue, and can slow your reaction times. Exposure protection is important, as it is frequently a bit colder at depth. Likewise, the advice to back up your computer readings with tables is a good idea. You also will want to review how to read decompression displays on your computer, just in case something goes wrong and you go into deco.
I guess what I'm trying to say is that I hope you and your dad will take a little extra time to plan this and subsequent deep dives. If deep diving is something that both of you like, you might consider an AOW course followed by a deep diver specialty. I have done both, and consider myself a novice at those sorts of depths after quite a few deep dives. Deep diving's a lot of fun, but it needs to be given a lot of respect. With only 11 dives under your belt, you really need to consider whether you're ready for it.
Good luck! Please post a dive report and let us know how it goes.
-Grier
I don't know about the SSI recommendations concerning deep diving, but PADI recommends that you have Advanced Open Water certification before you do dives deeper than 60 ft.
A deep dive has several important safety considerations. You need to be rigid about maintaining good buddy contact - there's no running to the surface for air at that depth. You also need to be very aware that ascents from 100 ft take a little bit of time, so be sure to go slowly. Narcosis, of course, is another issue, and can slow your reaction times. Exposure protection is important, as it is frequently a bit colder at depth. Likewise, the advice to back up your computer readings with tables is a good idea. You also will want to review how to read decompression displays on your computer, just in case something goes wrong and you go into deco.
I guess what I'm trying to say is that I hope you and your dad will take a little extra time to plan this and subsequent deep dives. If deep diving is something that both of you like, you might consider an AOW course followed by a deep diver specialty. I have done both, and consider myself a novice at those sorts of depths after quite a few deep dives. Deep diving's a lot of fun, but it needs to be given a lot of respect. With only 11 dives under your belt, you really need to consider whether you're ready for it.
Good luck! Please post a dive report and let us know how it goes.
-Grier
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