Ciallaíonn "am grinnill" an t-achar ama a bheidh i dtumadh ó thráth fágála an dromchla go tráth tosaithe an éirí chun dromchla.
“Bottom time” means the duration of a dive from the time of leaving the surface to the commencement of ascent to the surface.
I gcás seomra comhbhrúite is intumtha a bheith á úsáid, beidh sé sa chaoi go bhféadfaidh duine aistriú faoi bhrú ón seomra comhbhrúite intumtha chuig an seomra comhbhrúite ar an dromchla (agus vice- versa).
Where a submersible compression chamber is used, be capable of allowing a person to transfer under pressure from the submersible compression chamber to the surface compression chamber (and vice versa).