Technical and Exploration Ratings

The course prepares students for diving activities beyond the limits of “recreational sport diving”. These activities include depths to a maximum of 165 fsw/ 50 msw and involve multi-gas switches for decompression that will extend to a maximum of approximately 30 minutes. Full Oxygen and decompression tracking, dive planning, emergency protocol, equipment handling, and stress management skills, are covered in detail. This program is intended to serve as the building block of all of the ANDI Technical and Exploration programs.

What is “Technical” Diving?

Technical Ratings
Technical SafeAir Diver - (L3) TSD
Technical Tri-Mix Diver - (L3) TTM
Solo  Diver - (L3) SLD
Technical Wreck Diver - (L3) TWD
Technical SafeAir Instructor - (L3) TSI
Technical Instructor (Specialty) - (L3)
Technical Divemaster - (L3) TDM
Cave Diver (L3) CAV
Cave Diver Instructor - (L3) CAI

Exploration Ratings
Extended Range Diver - (L4) ERD
Extended Range Instructor - (L4) ERI
Intermediate Tri-Mix Diver - (L5) ITM
Tri-Mix Diver - (L5) TMD
Exploration Divemaster - (L4 & 5) EDM
Tri-Mix Instructor - (L5) TMI
Cave Explorer - (L4) CVX
Cave Explorer Instructor - (L4) CXI
Cave Explorer - (L5) CVX
Cave Explorer Instructor - (L5) CXI

Announcing new Regional Headquarters for China-Hong Kong-Philippines

ANDI would like to welcome its newest regional headquarters servicing China, Hong Kong and Philippines


Address : No.40 Liangmaqiao Road, Chaoyang district, Beijing, China,102209

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone: +86 186-0139-7908


Li Hui

Haden Ning

ANDI China-Hong Kong-Philippines

 China Homepage

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