Watch Glossary

Speed of underwater ascent; typically limited to prevent nitrogen narcosis and bends.

Decompression sickness caused by rapid pressure reduction; prevented by proper timing.

Total duration a diver spends at working depth during dive operation.

Watches pushed to extreme depths beyond normal certification limits.

Controlled ascent process to safely release gases from diver's body and equipment.

Watches certified for extreme depth diving; typically 1000m or greater.

Condition where helium gas saturates diver tissues during extended deep work.

Intoxicating effect of nitrogen at depth; diver watches help track time/depth.

Maximum time underwater at specific depth without mandatory decompression stop.

Brief decompression hold near surface; allows final off-gassing before surfacing.

Prolonged underwater work where diver's tissues absorb helium at depth.