On both the west and east coasts, the only NBP instructors are Bosn's. The cell in the west coast has a PO1 as the IC with PO2 and ideally two MS as instructors. Currently they will get specific courses to allow them to instruct but that leads to a problem of having to send guys off on courses when they should be in the classroom teaching. There is a plan to have certain aspects of NBP instructional techniques embedded into the Bosn QL course to enable a Bosn to step right into the instructor position without having to go away on specialized instructor training. When I left CFFSE last summer, we were still fleshing out how this was to be achieved.
If you want to know more go to the CFFSE website;
http://esquimalt.mil.ca/cffs/SeaDiv/NBP%20Aid%20Memior%201.htm
or to the Sea Training Pacific website:
http://esquimalt.mil.ca/stp/Departments_Web_Pages/Deck.htm#boarding_links
One other thing both coasts are in constant contact with each other to ensure that the training delivered is uniform for both MARPAC and MARLANT.