Where necessary, the density of sea water (the fluid in which the vessel is floating) and fluids commonly carried on board can be adjusted using the Density dialog.
Density using the current units, or non-dimensional relative density (specific gravity), may be specified. Alternatively, density may be specified using Barrels as the unit of volume. Conversions are performed automatically. Relative density is calculated relative to a fluid having a density of 1000.0 kg/m3.
By assigning a code to the fluid you can easily apply the fluid type in the Compartment Definitions table. Tanks that have been specified as containing one of these fluids will be updated automatically when the density of the fluid is changed in the Density dialog. Tank calibrations results and loading conditions will also be updated.
Note
The vessel's hydrostatics are always calculated assuming the vessel is floating in the fluid labelled "Sea Water". This is the first fluid in the list printed in bold font. If the vessel is to float in a different fluid, it is necessary to change the density of this fluid. Note that only the custom fluids may have their names changed. Thus, if you wanted to carry out an analysis for a vessel in fresh water, you would change the density of "Sea Water" to 1000.0 kg/m3.
Densities listed in the Density table can be saved and loaded using the File menu.
The densities file may be edited manually if desired. There is one row for each of the 18 fluid types. The four columns, each separated by a tab character. These are fluid name, fluid code, relative density, colour respectively (the colour is in hexadecimal for the red, green, blue components and are probably much more easily edited in the Density dialog. The name and code for the first entry, Sea Water, cannot be changed (any changes made will be ignored). All other entries may be edited (the same restrictions area applied as when editing through the Density dialog).
|
Sea Water |
S |
1.0250 |
6D00FF00FF00 |
|
Water Ballast |
B |
1.0250 |
6D006D00FF00 |
|
Fresh Water |
W |
1.0000 |
FF005F005F00 |
|
Diesel |
D |
0.8400 |
FF005B00FF00 |
|
Fuel Oil |
F |
0.9443 |
6D00FF006D00 |
|
Lube Oil |
L |
0.9200 |
7F007F007F00 |
|
ANS Crude |
C |
0.8883 |
3F003F003F00 |
|
Gasoline leaded |
G |
0.7499 |
FF0000007F00 |
|
Unlead. Gas. |
U |
0.7499 |
FF007F007F00 |
|
JFA |
J |
0.8203 |
7F007F00FF00 |
|
MTBE |
M |
0.7471 |
F600FA00C900 |
|
Gasoil |
GO |
0.8524 |
FF00FF007F00 |
|
Slops |
SL |
0.9130 |
FF006F00FF00 |
|
Custom 1 |
C1 |
1.0000 |
D6000300D600 |
|
Custom 2 |
C2 |
1.0000 |
D600D6000300 |
|
Custom 3 |
C3 |
1.0000 |
0300D600D600 |
|
Custom 4 |
C4 |
1.0000 |
D60003000300 |
|
Custom 5 |
C5 |
1.0000 |
DF00DF00DF00 |
If you make an error, you can always reset the densities to their default values in the Densities dialog.
Also see:
Windows Registry on page 18