> OWSI - Open Water Scuba Instructor should equate with Moniteur **
OWSI is a PADI qualification rather than a BSAC one. If the OP is a CMAS
2* instructor, then they are also (by definition I think) a 3* diver.
Hence the roughly equivalent BSAC diving grade would be Advanced Diver,
and the instructing grade OWI.
Although it would be no problem at all to dive in the BSAC system with
his diving grade, to formally teach the BSAC syllabus in a BSAC centre
Alain would need to attend an IFC. Full details of instructor crossover
here:
http://www.bsac.org/page/90/instructor-crossover.htm
cheers,
Ben
(BSAC AD/AI, CMAS M3)

Signature
Ben Panter, Edinburgh, UK.
Email false, http://www.benpanter.co.uk
or you could try ben at ^^^^^^^^^^^^^^^