Dirk Penzel
IANTD Tecnical Cave Instructor
IANTD OW Sidemount Instructor
IANTD Adv. Cave Sidemount Instructor
TDI Cave Instructor
TDI Cave Sidemount Instructor
PADI OW Instructor (OWSI)
PADI Cavern Instructor
PADI Sidemount Instructor
SSI Instructor (DCSI)