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The ZAKOS SHIP TOOLS CALCULATION is a fourth generation Integrated software package
for the Cargo calculation of a Tanker / Cargo Ship. The package is a menu driven and does
not require any previous experience on the use of computers.
The ZAKOS OIL CALCULATION has been designed and is ideally suited to assist Surveyors
Ship’s Officers for the Cargo / Bunker calculation of a Tanker / Cargo Ship.
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2.
FUNCTIONS :
From the Main Screen move the mouse pointer at any ( Calculation Icon ) or
( Functions Buttons ) to make selection then click
Below we describe the program execution for the 6 ( Calculations ).
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TANKER
SHIP
:
Click the Tanker Calculation icon and the following Window Screen will appear:
Procedure :
1.
2.
3.
4.
5.
Select ASTM table from Table List
Type Gravity
Type Temperature
Type T.O.V.
Type F.W.
e.g. T- 6Α
e.g. API = 30.25
e.g. °F = 78.3
e.g. Bbls = 25500
e.g. Bbls = 20
Click for Factors calculation
Click to calculate GOV, VCF, GSV, WCF, MT in air
Click to clear the calculation
Click to view the Demo Example
Click to terminate the program and exit to Main Screen
The procedure described above will be carried out so many times as you wish.
The following ASTM Tables are :
5AB, 6AB, 23AB, 24AB, 53AB, 54AB & D
Note : For Tables 5AB, 6AB use API 60F for Gravity,
°F for Temp., Bbls for Volume
For Tables 23AB, 24AB use R.D 60F for Gravity,
°F for Temp., Bbls for Volume
For Tables 53AB, 54AB use DENS 15C for Gravity, °C for Temp., m3 for Volume
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L.P.G.
SHIP:
Click the LPG Calculation icon and the following Window Screen will appear:
Procedure :
 Select Lpg Cargo name from the Table List e.g. Light Hydrocarbon









Type
Type
Type
Type
Type
Type
Type
Type
Type
Gravity
Liquid Temperature
Vapour Temperature
Vapour Pressure
Molecul Weight
Total Volume (100%)
Corr’d Volume
Tank Shrinkage Factor
Liquid Shrinkage Factor
e.g. Density (vacuo)
e.g. °C
e.g. °C
e.g. Bar
e.g. kg/kmol
e.g. m3
e.g. m3
e.g.
e.g.
= 0.511
= -43.0
= -37.0
= 0.049
= 44.100
= 9727.360
= 5455.850
= 0.97567
= 0.99654
Click for Factors calculation
Click to calculate Liquid, Vapour Phases, VCF, WCF, MT in air
Click to clear the calculation
Click to view the Demo Example
Click to terminate the program and exit to Main Screen
The procedure described above will be carried out so many times as you wish.
The following ASTM Table is used : T-54
Allowable values for Density ( 0.500 to
0.655 )
and for Temp ( -46°C
to
+75°C )
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CHEMICAL
SHIP:
Click the Chemical Calculation icon and the following Window Screen will appear:
Procedure :
 Select Chemical Cargo name from the Table List ή




Type
Type
Type
Type
Gravity
Temperature
Dens. Corr’n Factor for 1°C
Ref. Base Temperature
 Type TOV
 Type OBQ
 Type FW
e.g. Density (vacuo)
e.g. °C
e.g. °C
e.g. °C
= 1.1172
= 20.3
= 0.007
= 15.0
e.g. m3
e.g. m3
e.g. m3
= 441.352
= 0
= 0
Click for Factors calculation
Click to calculate GOV, VCF, Density at Obs.Temp.,
MT in air
Click to clear the calculation
Click to view the Demo Example
Click to terminate the program and exit to Main Screen
The procedure described above will be carried out so many times as you wish.
The Chemical Cargoes which are listed in the table is only for symbolical purpose..
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LNG
SHIP:
Click the LNG Calculation icon and the following Window Screen will appear:
Procedure :
 Select Operation Mode from the Table List e.g. Loading ή Unloading
 Type Volume
 Type Temperature (-150 - -170 )
e.g. ( m3)
e.g. °C
=
=
122413.000
-160.4
At the Table and on the column (Molar Fraction ) :
 Type the Molar Fraction of each Component. Must type the ( 11 ) Component even with zero value
So, when all Molar Fraction are completed then Density, Weight και BTU will be calculated automaticaly.
Click to clear the calculation
Click for Factors calculation
Click for Help
Click to view the Demo Example
Click to terminate the program and exit to Main Screen
The procedure described above will be carried out so many times as you wish.
The example which is shown is only for symbolical purpose.
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The Screen shown below is the continuation of the LNG calculation
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BUNKER VOYAGE CALCULATION :
Click the Bunker Voy.Calculation icon and the following Window Screen will appear:
Procedure :
Type Ship Data fields
Type Edit Voyage Data Table
Type Distances in Voyage Calculation Table
Type FO/DO in Receive Bunkers at Each leg Table
Click to clear the calculation
Click to Print
Click to view the Demo Example
Click to terminate the program and exit to Main Screen
The procedure described above will be carried out so many times as you wish.
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CARGO DRAFT SURVEY CALCULATION :
Click the Cargo Draft SurveyCalculation icon and the following Window Screen will appear:
Procedure
1:
Click this button in order to select/type ship’s info




Select Ship’s Draft Units
Select Ship’s Weight Units
Select Ship’s LCG Calc. position
Select Ship’s P/P Correction mode
 Type Light Ship Weight
 Type Ship’s LBP
For P/P Correction :
 Select Ship’s Draft Marks position
 Type Draft Marks Distance
When finished the above then
Click this button where the following Window Screen will appear:
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Procedure
2:
Type Drafts FWD/MID/AFT Port/Sbtd
When all Draft fields completed and the Mean of Means displayed then
Click this button where the following Window Screen will appear:
Procedure
2:
Start typing all fields for Drafts, Displ. TPC, LCF, MTC from Ship’s Hydrostatic Table
When completed click the button [ Apply Interpolations ] then
Click this button where the following Window Screen will appear:
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Procedure
3:
 Type Drafts Dock Density
 Type Previous Displacement ( if this one is your Final Draft Survey )
 Type FO/DO/FW etc.
When all fields completedthen then
Click this button where the following Window Screen will appear:
Click this button to Print
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Click this button where the following Window Screen will appear:
Use Up / Down Arrow to read the help instructions
Example buttons
Click Metric for Metrc units Draft Survey Example
Click Ft.inch for Imperial units Draft Survey Example
Click to clear the Draft Survey calculation
Click to terminate the program and exit to Main Screen
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STOWAGE FACTOR CONVERSION :
Click this button and the following Window Screen will appear:
Procedure :
Select Stowage Factor from Table List e.g. Ft3 / LT
Type the
Stowage Factor
e.g.
45
Click for Factors calculation
Click to clear the calculation
Click to terminate the program and exit to Main Screen
The procedure described above will be carried out so many times as you wish.
14
UNIT CONVERSION :
Click this button and the following Window Screen will appear:
Procedure for Unit Conversion :
Select Conversion Mode one of the 6 selection of the Select Conversions
button e.g. in this example we selected Length.
clicking the appropriate
Start typying the Unit value in the column METERS Input .
Moving the cursor at that cell column METERS Input with a Very Light Blue color and start typying the
Unit value. Then, move the cursor to another cell in order the Results will be displayed.
The procedure described above will be carried out so many times as you wish.
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AVERAGE
GRAV / TEMP :
Click this button and the following Window Screen will appear:
Επιλεξτε
υπολογισμο
Average π.χ.
API 60F
Procedure :
Select Average Mode one of the 3 selection of the Select Average clicking the appropriate button
e.g. in this example we selected API 60F.
Start typying the columns ( Volume & Gravity API 60F ) and the API Average will be displayed.
The procedure described above will be carried out so many times as you wish ( 1 to 40 ).
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CALCULATOR :
Click this button and the following Window Screen will appear:
Calculator Procedure :
Click each button number you wish e.g. 12029.182 m3
Click button numbers 1, 2,
the result will be displayed.
0,
2,
9,
., 1, 8, 2
then click the button m3/Bbls and
The procedure described above will be carried out so many times as you wish.
for more Informations :
KOSTAS ZACHAROPOULOS
Phone : +30 210 513 7931
E-mail cptzakos@otenet.gr