1. Dive mode can be allowed reversely
The diver that use dive computer expresses is in avoid decompression to keep range inside, hind second dive but relatively before second dive deepness is deep; Diver of use machinery watch still should depend on abide to phreatic water mode, with plan safety
2. Lower comfortable go the age
10 years old of lowest that already became most training and hair to take an organization allow to send according to the age
3. Across admits
Rose 1998, most training and hair allow student to be inside training course according to the organization Ji Yongchi course of classroom of textural of A of Yu Jia ground, organization of B of ground of additional Yu Yi completes course of open water area
4. Slower ascendant rate
According to new regulation of navy of abide United States, each organization edits its rise rate from former minutely rise 60 呎 slow down comes minutely rise 30 呎
5. Safety stays
Must make in 5 meters of place before rising to surface 3 to 5 minutes safety stays
6. Neuter flotage rises
Old regulation: The beard before rising light of discharge of the air inside BC, kick up with frog shoe below negative flotage state litre. New regulation: Neuter flotage maintains before rising, arrive all the time rise to surface. Reason: Old regulation department avoids paroxysmal rise quickly, but American navy studies discovery loses buoyancy condition to fall to exert all his strength to be kicked up with frog shoe rise to often bring about diver to shut gas, or form lung to jam, both all can cause embolism disease
7. In all implement symbiosis is collected no longer row
In air when extinct state, use reserve gas source, or go of companion reserve 2 class head, or collect an independence urgent rise. Unless you are mixed,go companion beforehand drilling passes, do not use same a 2 class head in all implement symbiosis, because bilateral beard shuts gas by turns and uncontrollable flotage, the proportion that brings about two people to suffer an accident at the same time is higher
8. Go companion system
Statistic shows, go alone rate of the machine outside sending the trade is far under have go the dive of companion, halfway organization already began a professor to go alone course, and nuclear hair goes alone charter
9. Breathing tube
Deploy basically what past breathing tube is regarded as light all the time, but go greatly to be twined constantly by fishnet or camera braces and make face lens falls off. Unless surface is long-distance,new regulation suggests float goes, do not use breathing tube as far as possible
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