MHK
Guest
I scanned the thread and I didn't see a few other points that are noteworthy to mention in any discussion relating to the proper usage of the long hose.
One of the principles of DIR diving is consistency throughout all your diving. In other words you are not going to use one configuration inside a wreck or cave, and then use a different configuration in the open ocean. Moreover, you and your buddy are consistently configured to eliminate the possibility of confusion in emergency situations, so once you accept that premise, let's discet why using a long hose, on the right port if diving doubles, is the donating regulator, and the back-up regulator is necklaced directly under the chin via a bungee. BTW, the hose length is always 7' in any true overhead environment, but should be no shorter then 5' in open ocean environemnts..
The basic premise of donating your primary regulator in an OOA emegency is because you absoluetly know that it's working because you've just been breathing from it. The last thing you want to do in an OOA is donate a reg that may not be working so by insuring the OOA diver gets a known working regulator you avoid the possibility that he may be down to his last breath and the *octo* may have collected contaimanents during the dive or may be temporarily malfucntioning. Moreover, by standardizing the positioning under your chin you eliminate the potential that it could have fallen out of the retaining device and you eliminate the possibility that you can't locate it, and if it should free-flow you'll know immediately because it's right under your chin..
Again, once you apply the principle of consistency you'll want to understadn that in an overhead environment, such as a wreck or cave, your primary is on the right port because in an OE if you are in an air share you'll put the problem diver as the lead diver in position 1 to exit. Should you scrap your valves on the cieling your right post that the OOA diver is breathing from will *roll on*, not off.. Whereas the left post, which you will be breathing from can actually roll off. However, should that happen you can simply reach back and turn your valve back on, whereas you may not know it if you are donating that hose, and then once again the OOA diver will be left without air..
I hope that answers your question, but if not let me know and I'll expand..
Later
One of the principles of DIR diving is consistency throughout all your diving. In other words you are not going to use one configuration inside a wreck or cave, and then use a different configuration in the open ocean. Moreover, you and your buddy are consistently configured to eliminate the possibility of confusion in emergency situations, so once you accept that premise, let's discet why using a long hose, on the right port if diving doubles, is the donating regulator, and the back-up regulator is necklaced directly under the chin via a bungee. BTW, the hose length is always 7' in any true overhead environment, but should be no shorter then 5' in open ocean environemnts..
The basic premise of donating your primary regulator in an OOA emegency is because you absoluetly know that it's working because you've just been breathing from it. The last thing you want to do in an OOA is donate a reg that may not be working so by insuring the OOA diver gets a known working regulator you avoid the possibility that he may be down to his last breath and the *octo* may have collected contaimanents during the dive or may be temporarily malfucntioning. Moreover, by standardizing the positioning under your chin you eliminate the potential that it could have fallen out of the retaining device and you eliminate the possibility that you can't locate it, and if it should free-flow you'll know immediately because it's right under your chin..
Again, once you apply the principle of consistency you'll want to understadn that in an overhead environment, such as a wreck or cave, your primary is on the right port because in an OE if you are in an air share you'll put the problem diver as the lead diver in position 1 to exit. Should you scrap your valves on the cieling your right post that the OOA diver is breathing from will *roll on*, not off.. Whereas the left post, which you will be breathing from can actually roll off. However, should that happen you can simply reach back and turn your valve back on, whereas you may not know it if you are donating that hose, and then once again the OOA diver will be left without air..
I hope that answers your question, but if not let me know and I'll expand..
Later
Come to think of it, so is long hoses 
