USER'S GUIDE - ShipWeight

Introduction
1.4.1 The breakdown structure systems
All available breakdown structures in ShipWeight are hierarchical. The reason
for breaking up the ship is to make more accurate estimations by trying to
isolate weight groups that can more easily be compared from ship to ship.
Also breaking up the ship gives statistical cancellation effects. This means
that the different errors in the estimation of weight groups will sometimes give
a higher -and sometimes a lower weight. Thus the errors will to some extent
erase each other.
The figure below shows the four top levels in the standard ShipWeight break
down structure. The total structure contains more than 300 weight groups
divided into six levels.
1-4
ShipWeight – User’s Guide, version 10.0, April 2011