Category I Dive

“Category I dive” means a dive to a depth of less than 50m using surface-oriented diving techniques and a breathing mixture of air, but no other breathing mixture except in cases of decompression, treatment or emergency, and includes a dive in which a diving bell or diving submersible is used for an observation dive, but does not include a lock-out dive; plongée de catégorie I.

Source: Nova Scotia Offshore Area Petroleum Diving Regulations, SOR/95-189, Canada, current to May 31, 2012. Regulations

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