▁but ▁the ▁valid ity ▁of ▁such ▁wa ivers ▁will ▁vary ▁with ▁the ▁legisl ation . ▁ ▁Equ ival ence ▁of ▁cert ification ▁ ▁The ▁following ▁cert ifications ▁are ▁recogn ised ▁as ▁meeting ▁or ▁exceed ing ▁the ▁requirements ▁of ▁EN / ISO ▁ 2 4 8 0 1 - 3 : 2 0 1 4 : ▁AC UC ▁Div em aster ▁AND I ▁Div em aster ▁B S AC ▁D ive ▁Le ader ▁C MA S ▁ 3 - star ▁D iver ▁D MT ▁N ASE ▁Div em aster ▁I ANT D ▁Div em aster ▁NAS DS ▁D ive ▁Super visor ▁NA UI ▁Div em aster ▁P AD I ▁Div em aster ▁P SA I ▁Div em aster ▁S AA ▁D ive ▁Le ader (? ), ▁D ive ▁Super visor ▁S DI ▁Div em aster ▁S NS I ▁Div em aster ▁S SI ▁D ive ▁Guide ▁ ▁Equ ival ence ▁in ▁other ▁fields ▁of ▁div ing ▁ ▁Techn ical ▁div ing ▁In ▁technical ▁div ing , ▁divers ▁are ▁assumed ▁to ▁be ▁compet ent ▁and ▁responsible ▁for ▁their ▁own ▁safety ▁or ▁the ▁safety ▁of ▁the ▁team ▁of ▁which ▁they ▁are ▁members ▁to ▁the ▁extent ▁that ▁is ▁agreed ▁by ▁that ▁team . ▁It ▁is ▁not ▁unusual ▁for ▁a ▁technical ▁team ▁or ▁expedition ▁group ▁to ▁appoint ▁one ▁of ▁their ▁number ▁as ▁a ▁team ▁leader ▁or ▁surface ▁d ive ▁mar sh all , ▁but ▁the ▁surface ▁mar sh all ▁is ▁often ▁more ▁of ▁an ▁administrative ▁position , ▁who ▁will ▁check ▁divers ▁into ▁and ▁out ▁of ▁the ▁water ,