The Approach to Deadweight in Calc

The creation of various operational deadweight loading conditions in Calc, utilizes the principle of "loading subsets". A loading subset is simply a group of either fixed weights, compartment loads or containers. When used in different combinations, these subsets allow comprehensive deadweight loading conditions to be created with the minimum duplication of effort, even for complex loading arrangements, for example, as may be found on multi-purpose vessels. Furthermore, this approach should also lead to the elimination of data inconsistencies between similar loading conditions.

A total deadweight loading condition can then be created from a combination of different types of loading subset, typically cargo, consumables and ballast. It is envisaged, for example, that "maximum homogeneous cargo" could be defined as a fixed weight subset, and then be included in the three voyage conditions of Maximum Homogeneous Cargo, Departure, Maximum Homogeneous Cargo, Intermediate, and Maximum Homogeneous Cargo, Arrival, each thus reflecting the varying status of consumables and any ballast - in both weight and location, Another example would be to create a subset covering all consumables down to 10% of capacity which could then be selected for all 10% consumable arrival conditions with different cargo conditions, assuming, of course, that the locations of the consumables are also fixed for all cargo conditions.