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![]() | Text and/or other creative content from Pony bottle was copied or moved into Alternative air source with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Pony Bottle also refers to small sized bottles of beer, at seven ounces or so.
Nantucketnoon ( talk) 21:56, 7 May 2010 (UTC)
I find it interesting that the definition for a bailout bottle has been changed to something no commercial diver would be allowed to use in my part of the world. It would also not serve adequately for bailout in anything other than a fairly shallow dive, with no decompression obligation. Clearly there are different meanings in different contexts. I would consider any cylinder carried primarily to allow the diver to bail out in an emergency to be a bailout bottle (cylinder if you prefer), and it should carry sufficient gas to get you from any point in the planned dive to a place where you can get a secure gas supply. Bell, surface, staged cylinder, whatever. I would class the Spare air type as a bailout bottle at the extreme low volume end, and a pony bottle as usually larger, but still a bailout bottle. For surface supplied diving the bailout bottle is usually carried on the back, and though usually between 7 and 12litres, may be as big as a twin 12litre for deep bell diving. An extreme range of sizes, from less than a litre to 24 litre, but bailout battles all. Because that is their purpose.
Pony bottle is a different matter. I dont have any references for what a pony pottle is or is not, but general usage where I live (South Africa) is that a pony is smaller than the primary cylinder, would only be carried by Scuba divers, and is usually, though not necessarily carried attached to the back mounted primary cylinder. Some divers would also call a sling/sidemount bailout cylinder a pony. They would probably not call a Spare air a pony. Does anyone have a good reference? Peter (Southwood) (talk): 15:07, 3 November 2011 (UTC)
The critique of octopus regulators states: “a failure of the first stage regulator or the exhaustion of the gas supply from the primary tank makes this solution inferior to a totally redundant breathing gas system such as a pony bottle”.
Inferior for whom?
Octopus regulators are primarily intended for supplying breathing gas to other divers - not oneself. And a pony bottle’s first stage regulator is just as likely to fail, as a main tank’s is.
It’s obvious to qualified divers, but I suggest spelling this out in more detail for the benefit of non-divers. I suggest replacing “Because of this… such as a pony bottle.” with something along the following lines:
“Octopus regulators are primarily intended for supplying breathing gas to other divers. For example, an octopus regulator carried by diver George, could be supplied to diver Mary in an emergency. But this would leave Mary dependent on George for the ascent back to the surface. If Mary carried a pony bottle, she could ascend independently. George could also use his own octopus regulator in the event of a failure of his other (main) second-stage regulator. However, a failure of George’s first-stage regulator, or the exhaustion of the gas supply from his primary tank, will render George’s octopus regulator unusable to everyone.”
06:22, 13 July 2022 (UTC) TC — Preceding unsigned comment added by 1.124.110.77 ( talk)
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||
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![]() | Text and/or other creative content from Pony bottle was copied or moved into Alternative air source with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Pony Bottle also refers to small sized bottles of beer, at seven ounces or so.
Nantucketnoon ( talk) 21:56, 7 May 2010 (UTC)
I find it interesting that the definition for a bailout bottle has been changed to something no commercial diver would be allowed to use in my part of the world. It would also not serve adequately for bailout in anything other than a fairly shallow dive, with no decompression obligation. Clearly there are different meanings in different contexts. I would consider any cylinder carried primarily to allow the diver to bail out in an emergency to be a bailout bottle (cylinder if you prefer), and it should carry sufficient gas to get you from any point in the planned dive to a place where you can get a secure gas supply. Bell, surface, staged cylinder, whatever. I would class the Spare air type as a bailout bottle at the extreme low volume end, and a pony bottle as usually larger, but still a bailout bottle. For surface supplied diving the bailout bottle is usually carried on the back, and though usually between 7 and 12litres, may be as big as a twin 12litre for deep bell diving. An extreme range of sizes, from less than a litre to 24 litre, but bailout battles all. Because that is their purpose.
Pony bottle is a different matter. I dont have any references for what a pony pottle is or is not, but general usage where I live (South Africa) is that a pony is smaller than the primary cylinder, would only be carried by Scuba divers, and is usually, though not necessarily carried attached to the back mounted primary cylinder. Some divers would also call a sling/sidemount bailout cylinder a pony. They would probably not call a Spare air a pony. Does anyone have a good reference? Peter (Southwood) (talk): 15:07, 3 November 2011 (UTC)
The critique of octopus regulators states: “a failure of the first stage regulator or the exhaustion of the gas supply from the primary tank makes this solution inferior to a totally redundant breathing gas system such as a pony bottle”.
Inferior for whom?
Octopus regulators are primarily intended for supplying breathing gas to other divers - not oneself. And a pony bottle’s first stage regulator is just as likely to fail, as a main tank’s is.
It’s obvious to qualified divers, but I suggest spelling this out in more detail for the benefit of non-divers. I suggest replacing “Because of this… such as a pony bottle.” with something along the following lines:
“Octopus regulators are primarily intended for supplying breathing gas to other divers. For example, an octopus regulator carried by diver George, could be supplied to diver Mary in an emergency. But this would leave Mary dependent on George for the ascent back to the surface. If Mary carried a pony bottle, she could ascend independently. George could also use his own octopus regulator in the event of a failure of his other (main) second-stage regulator. However, a failure of George’s first-stage regulator, or the exhaustion of the gas supply from his primary tank, will render George’s octopus regulator unusable to everyone.”
06:22, 13 July 2022 (UTC) TC — Preceding unsigned comment added by 1.124.110.77 ( talk)