Commercial diving/Perform underwater work

Relevance: Scuba diving (partial), Surface supplied diving (full), Surface oriented wet bell diving (full).

Required outcomes:
 * 1) Demonstrate the ability to perform inspection dives
 * 2) Demonstrate the ability to perform underwater searches
 * 3) Demonstrate the ability to safely use hand and power tools underwater
 * 4) Demonstrate the ability to safely use hand tools underwater
 * 5) Demonstrate the ability to safely use power tools underwater
 * 6) Demonstrate the ability to carry out underwater rigging and lifting activities