SDI/TDI Japan

Current Regions Served

Japan

Japan

From the icy seas of Hokkaido to the coral reefs of Okinawa, Japan offers one of the most diverse underwater environments on Earth. Volcanic formations, kelp forests, and colorful reefs create a landscape where ancient tradition meets modern exploration. Each region reveals a different story—historic wrecks, submerged torii gates, and thriving marine ecosystems that showcase the harmony between people and the sea.

The SDI / TDI / ERDI Japan Office proudly supports divers and professionals across the country. Our mission is to make world-class scuba education accessible in Japan, providing certification services, localized training materials, and dedicated customer support in Japanese. Whether you are taking your first breath underwater or pursuing advanced technical training, our team is here to guide and assist you every step of the way.

For assistance, please contact us by phone during business hours or email us at your convenience. We are committed to offering sincere, reliable service to every member of Japan’s diving community.

Phone

WhatsApp

TBD

Hours

Tuesday-Saturday
12:00 – 18:00

Services Offered

Customer Service

Shipping

Card Printing

Sales, purchasing and invoicing

Service Center Representatives

<center>Daisuke Kato </center>

Daisuke Kato

Service Center Manager

Phone: 81-52-784-9336
Email: daisuke.kato@tdisdi.com

<center>Naoko Tetsumoto </center>

Naoko Tetsumoto

Sales, SDI TDI Instructor Trainer (IT)

Email: naoko.tetsumoto@tdisdi.com

<center>Takako Kato </center>

Takako Kato

Office Staff

Email: takako.kato@tdisdi.com

<center>Hazuki Dwyer</center>

Hazuki Dwyer

Translation/Inerpretation

Email: hazuki.dwyer@tdisdi.com

<center>Miki Kurimoto</center>

Miki Kurimoto

Translation/Interpretaion/Material development/SDI TDI Instructor

miki.kurimoto@tdisdi.com

Regional Director

<center>Alan Cale </center>

Alan Cale

Director of Business Development - Asia Pacific

Phone: 888-778-9073
Email: alan.cale@tdisdi.com