 CONT: After the "Lets stretch her legs" scene, we can see chief  engineer Bell increasing steam pressure by turning the regulator  counterclockwise. Later during the collision with the iceberg, we  can see some worker decreasing pressure by starting to turn the  regulator clockwise, yet in next shot he is turning the regulator  counterclockwise still decreasing the pressure. Several shots later,  after change to reverse, Bell is increasing pressure by turning the  regulator clockwise.