Abstract: The metric is the ratio of maintenance craft workers to planners. This metric is used to measure the manpower planning work load of planners for comparison and benchmarking. This ratio identifies the level of work planning activities necessary to maintain a backlog of planned maintenance work.
Bathyal zone. The layers of the pelagic zone. The bathyal zone or bathypelagic â from Greek Î²Î±Î¸ÏÏ (bathÃ½s), deep â (also known as midnight zone) is the part of the pelagic zone that extends from a depth of 1000 to 4000 meters (3300 to 13000 feet) below the ocean surface. It lies between the mesopelagic above, and the abyssopelagic below.
The dysphotic zone goes down to about 3,300 feet. The last zone is the aphotic or midnight zone. No sunlight reaches this zone and it can reach depths of close to 20,000 feet. Sometimes people divide the midnight zone into two zones: the aphotic zone and the abyss.