| ype of diving | Classed as |
| a href="/encyclopedia/nautical-archaeology" title="nautical archaeology">archaeology (shipwrecks; harbours and houses sunk by storm or earth movements) | scientific |
| a href="/encyclopedia/cave-diving" title="cave diving">cave diving | technical,recreational |
| ivil engineering in harbours, water supply and drainage systems | commercial |
| onstructing,testing & maintaining equipment for the oil & offshore construction industries | commercial |
| a href="/encyclopedia/boat" title="boat">boat and ship inspection, cleaning and maintenance | commercial, naval |
| a href="/encyclopedia/demolition" title="demolition">demolition and salvage of ship wrecks | commercial,naval |
| a href="/encyclopedia/fish-farm" title="fish farm">fish farm maintenance | commercial |
| a href="/encyclopedia/fishing-industry" title="fishing industry">fishing, e.g. for pearls, scallops, abalones, crabs, lobsters, sea crayfish | commercial |
| a href="/encyclopedia/diver-training" title="diver training">diver training for reward | professional |
| a href="/encyclopedia/media-diving" title="media diving">media diving: making television programs, etc | professional |
| a href="/encyclopedia/harbour" title="harbour">harbour clearance and maintenance | military |
| a href="/encyclopedia/stealth" title="stealth">stealthy infiltration | military |
| a href="/encyclopedia/manned-torpedo" title="manned torpedo">manned torpedo,frogman | military |
| a href="/encyclopedia/naval_mine" title="naval_mine">mine clearance and bomb disposal, disposing of unexploded ordnance | military,naval |
| earch and recovery diving | commercial |
| earch and recovery by police for evidence and bodies | police |
| escue diving for underwater casualties | police |
| iving to investigate or arrest unauthorized divers | police,military,naval |
| a href="/encyclopedia/survey" title="survey">surveying sea life and freshwater life, marine biology | scientific |
| a href="/encyclopedia/underwater" title="underwater">underwater tourism | recreational |
Most of the classes of diving listed here, except