CSWIP 3.1U - NDT Inspection Diver at TWI SEA The first level of underwater NDT inspection course suitable for approved commercial divers
CSWIP 3.2U - NDT Inspection Diver at TWI SEA Level 2 course and the natural progression for CSWIP 3.1 certificate holders
CSWIP 3.4U - Underwater Inspection Controller at TWI SEA The advanced level course, suitable for experienced CSWIP 3.1U or 3.2U diver inspectors and surface NDT practitioners