Re:Apple Introduces Oceanic+
by ashtonbaker on Monday November 28, 2022 @11:28AM
(#33775623)
I think you're saying that PADI's recommendation that "you should have a backup plan" means implicitly that you should dive with two computers. They wouldn't make that an implicit recommendation, they would make it an explicit one. Which they do not. At least not for open water recreational diving.
The backup plan for recreational open water diving would typically be to end the dive if your computer fails, not to continue computerless. At the point that your computer failed, you should have been within no-deco limits, which you can confirm with your partner's computer to a reasonable margin of safety, so you can ascend safely.
I think it’s very much not recommended to have going computerless as a backup. And the idea that you are safe to do so because your “within no-deco limits” is potentially dangerous, as your relying on the computer to tell you if you are still within that limit.
Many people go quite close to the limit. Personally I stay far away from them, but safety recommendations are the same for everyone.