Task loading
Task loading in scuba diving is a term used to refer to a multiplicity of responsibilities leading to an increased risk of failure on the part of the diver to undertake some key basic function which would normally be routine for safety underwater.
Common examples
Common examples of activities which can cause task loading are:
underwater photography or videography
underwater search and recovery
underwater mapping
diving in environments requiring use lights or guide reels (such as night diving, wreck diving and cave diving) or other additional equipment
use of drysuits
driving a Diver Propulsion Vehicle (DPV)
diving in cold water
breathing narcotic gas mixture
Task loading represents an elevated risk when a new activity is undertaken by an inexperienced diver. A diver learning how to use a drysuit, or starting underwater photography, will need to dedicate considerably more attention to the proper functioning of the new and unfamiliar piece of equipment which leads to the elevated risk of neglect of other responsibilities. Those risks will normally diminish with experience.