in water systems. more vital and more difficult as ships get bigger and more complex. draw upon. safe. complex air conditioning systems. management for the ships to be examined and certified. conditioning systems. contamination," says Juenet. also for the crew. ship, but it happens all too often. ashore, including large office blocks and hospitals. environment. operator. Critical Control Point method. contamination, and certified by BV. on the group's world-wide experience with certifying public buildings.