So the EN standards and CMAS rules are for manufacturers of the equipment? For example; you can not breath thru a snorkel below a certain depth, so you can not manufacture a snorkel over a certain length?
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In the case of the CMAS rules, it is the finswimming competitor who is bound by the regulations and (s)he cannot race using a snorkel diverging from the dimensions listed. As for the EN standard, a snorkel manufacturer is free to ignore the specified dimensions in the standard but cannot then claim that the product conforms to current norms. I would expect most manufacturers to construct their snorkels to match the dimensions within this international standard in the interest of health and safety and to avoid litigation arising from, say, pulmonary injury caused by use of overlong snorkel barrels.So the EN standards and CMAS rules are for manufacturers of the equipment? For example; you can not breath thru a snorkel below a certain depth, so you can not manufacture a snorkel over a certain length?