IAC - International Aquanautic Club
Postal address:
Borbecker Str. 249
D-45355 Essen
Germany
Phone: +49 201 670 049
Mail:
Site: https://www.diveiac.com
NDL Nord - National Dive League (Northwest Region)
Postal address:
Raja Tee 12
Kulna 76613, Keila V.
Estonia
Phone: +37 256 694 999
Mail:
Site: https://ndl-global.com
PADI - Professional Association of Diving Instructors
Postal address:
The Pavilions
Bridgwater Road
Bristol BS13 8AE
United Kingdom
Phone: +44 117 300 7234
Mail:
Site: https://www.padi.com
SSI GmbH - Scuba Schools International
Postal address:
Johann-Höllfritsch-Str. 6
90530 Wendelstein
Germany
Phone: +49 9129 909 93 80
Mail:
Site: https://www.divessi.com/en/home
WOSD – World Organisation of Scuba Diving
Postal address:
Rozentuin 1
7943 JZ Meppel
The Netherlands
Phone: +31 622 93 99 30
Mail:
Site: https://wosd.com