CARGOMAX TM USB PRO 2

Transcription

1 CARGOMAX TM USB PRO 2

2 2 Introduction 3 Ship Data Page 4 Sign Convention 5 Ships Work area 6 Stowage Factor 7 Drafts Page 8 Trimming Page 9 Trim by Draft 10 Trim by Cargo 11 Passage Consumptions 12 Sag Effect 13 Hatch Breakdown 14 Report Page 15 Hydrostatics 16 Hydrostatic Graphs 18 File Structure 19 System Requirements 1

3 Introduction CARGOMAX USB PRO 2 is a new and improved system from the original CargoMax USB. It is an innovative tool for ships Masters and Senior Officers who monitor ship loadings. The program is designed and written by experts in the field of ship loading and therefore is easy to use, providing instant and accurate results. It is a self-contained system that can be used on any PC which has Microsoft Excel installed. It is portable and transportable, containing over 5000 ships. There is also a version for Windows Tablets which provides the convenience of calculations on the run. 2

4 Ship Data Page The ship data page is the default page. It comprises of the ship name, ship data, hatch data (LCG s cubic capacities & tanktop limits) and draft mark distances. There are six blue buttons on the right of every page. These buttons include ship data, drafts, trimming, hatches, report and hydrostatics and are used to navigate around the program. Click on these buttons to open the required page. Other buttons on this page are; Change to a different ship in the database or work area. Load and save your work. Used to find a sister hull form with the same hydrostatics. After saving your work always exit CargoMax from here. 3

5 Sign convention The sign convention used for CargoMax is as follows; LCG and LCF are negative if forward of midships. For d perpendicular distance is always positive After perpendicular distance is positive unless the marks read are aft of the AP Midship correction is negative if the marks read are aft of the Plimsoll. In the program you can hover over the red triangles for reminders of this convention. 4

6 Ships Work Area There are two sections the one on the left shows all ships in the Ships Data folder and the one on the right shows ships in the work folder. There are over 5000 ships in the database so to find a ship select the first letter of the name of the ship at the top then scroll down to your vessel. You can either load it from the main database or move a copy of it to the work folder and use it from there. This is recommended. The work area is only designed to save up to 40 surveys so keep this area clean. Once finished with a vessel you can delete it from the work area using the button at the bottom right to keep it clean. This will not delete the vessel from the database. If you have created a new ship and want to add it to the database you can move it back to the database with the lower Move arrow. All files are saved to and from the key so are portable and can be used on any host PC running excel. 5

7 Stowage Factor The stowage factor page will tell you how much cargo will fit based on the cubic capacities on the data page. It is particularly useful for volumetric cargoes like coal which can fill the space. The units are given in ft 3 /tonne and also converted to m 3 /tonne. Enter the stowage factor in the yellow cell and check to see how much cargo will fit in each hatch. Hit the Return button to go back to the data page. When planning the cargo distribution it is advisable not to load the trimming holds more than 97% full. This is in case the shore scale is more than the draft survey figure thereby leaving more cargo for trimming. Most loading facilities calibrate their belt error to be higher than the draft survey as a means of having a small safety margin during the loading. 6

8 Drafts Page Enter drafts, density and weights in the yellow cells for the appropriate survey. There are 4 areas of draft entry. Use the Int1 & Int2 sections for trimming. Make sure the data you have entered is consistent with the ships condition. i.e. check the feedback below the drafts to make sure it is correct. The trim, hog/sag and list are all key indicators. Before going to the trimming page ensure that the interim survey drafts, density and variables have been entered correctly. The known weights entered in the Int1 can quickly be brought through to Int2 & Final using the button. 7

9 Trimming Page The trimming page can be used after the interim survey drafts and known weights have been entered. This can be from either INT 1 or INT 2. Ensure that figures in these sections are complete and correct before trimming. On this page you can select from: Trim by Draft, Trim by Cargo or Passage consumption. Each of these are discussed in the following pages. The trimming calculations are done using the hydrostatic data and simultaneous equations. Ensure the hydrostatics are complete and that you checked the graphs for them. You will generally be trimming in two hatches. To select or de-select the hatches simply click on them. If only one hatch is selected there will be calculation errors. If you wish to load in more than 2 hatches, you can do so by entering the required amount in each hatch. This can be done as a trial and error type calculation until the required drafts are achieved. Use this method if topping up volume limited hatches, or to load max/min ranges for different grades. When trimming, the drafts calculated will include the deflection of the vessel as it was at the interim survey. It is up to your professional judgement to allow for any changes to the vessels deflection during the trimming pours. 8

10 Trim by Draft Use Trim by Draft to load to your desired maximum midship draft. Enter this draft and required trim in the yellow cells and select the 2 trimming hatches so that they are highlighted in green. Use the buttons to the right of the trim to select by stern or by head. The resultant trimming pours and expected drafts are calculated automatically. To load to the summer draft, with an allowance for dock water density, click on the loadline button. Red overloading warnings will appear if the summer draft is exceeded. This warning does not however take dock water allowance into account. 9

11 Trim by Cargo Use Trim by Cargo to load to a particular cargo figure. Enter this cargo figure and required trim in the yellow cells and select the 2 trimming hatches so that they are highlighted in green. Use the buttons to the right of the trim to select by stern or by head. The resultant trimming pours and expected drafts (at perpendiculars and marks) are calculated automatically. Red overloading warnings will appear if the summer draft is exceeded. This warning does not however take dock water allowance into account. 10

12 Passage Consumption This area is used to calculate the bodily rise and change of trim during the passage. Use this section for loadings that are restricted by arrival draft limits. Enter the LCG s of fuel and fresh water tanks that will be used enroute. Enter the required data in the yellow cells to calculate the required departure draft and trim at the loading port. The departure draft and trim are given in the green cells at the bottom. Always double check with the ships loadicator to confirm these figures. 11

13 Sag Effect This information can be assessed from the button found on the Drafts Final page and also the trimming page. It give information regarding what the maximum cargo could have been if the vessel completed with zero sag. It then tabulates how much cargo was short due to various amounts of sag. Then at the bottom it gives the sag and resulting shortage based on the ships final drafts for this loading. 12

14 Hatch Breakdown To enter the survey and cargo times click on the CHANGE DATES button. The Hatch Breakdown calculation can be done at the interim survey or at the final survey. It may be useful to conduct it at the interim survey to monitor different grade max/min ranges. Tanktop limits can be monitored here to ensure limits are not exceeded. To do the breakdown calculation enter the shore scale grades and values in the yellow cells and hit the appropriate calculation button. You can print this calculation using the printer button. 13

15 Report Page The draught survey report page displays all the important information used and calculated in the survey. The yellow cells at the top are used to describe the voyage. When the survey is complete you can print the survey report using the button at the top. This report is a good place to check your manual calculations at each step through the process. 14

16 Hydrostatics Page This page holds the ship s hydrostatics data for Displacement, TPC, LCF and MTC These values are entered in the yellow cells at 20 centimetre draft intervals. The CargoMax program will interpolate between the appropriate values. The graph can be used to identify and significant errors in the hydrostatics data. An abnormal spike in a graph is an indication that there is an error. To swap between graphs click on the buttons bellow the graph. By default the hydro range will be from 2.0m to 20m but if you are on a deeper vessel you can hit the Big Ship button to allow hydros from 6m to 24m to be entered. If moulded tables are used you can enter the keel thickness in (m) at the top left. e.g will be entered for a keel thickness of 22mm. 15

17 Hydrostatics Graphs This is the graph for displacement vrs draught and shows up as linear This is the graph for LCF vrs draught and shows a smooth curve. Content 16

18 Hydrostatics Graphs Always check the Change in Displacement (LCF, TPC & MTC) as these will highlight small errors. By placing the curser over the first spike you can see which draft may be in error. The LCF, TPC and MTC curves may be not be smooth depending on the tables however it will still highlight possible errors in the hydrostatics for you to check. Remember that if you start with incorrect data then you will get incorrect calculations. Hence you should always check the hydrostatics before using them. Also double check the results by performing a manual calculation to ensure you have confidence in the results. 17

19 File Structure Your USB key has a set file structure. Do not change this structure or your key may not work. If you have other files you would like to store on the key it would be best to put them in the Documents folder or create your own folder. The Ships Data and Work folder are used by CargoMax to load and save ships. The Archive folder is used to archive ships. The Distance Data folder is used by the Navigation program to load and save your distance tables. 18

20 System Requirements CARGOMAX USB PRO 2 utilises the power of Microsoft Excel for its functionality. Thus it requires that Macros are enabled. To do this, open Excel and go to the Tools menu and select Macro Security. We recommend you set the level to Medium or Low. On the Medium setting you will be asked if you want to enable macros when you start CargoMax You must Enable them. On the Low setting CargoMax will run automatically. Different regions use different notation for the decimal. For example; some countries use the comma (,) for the decimal. The date format also varies from country to country. For example in some countries 12/01/2006 could mean Jan 12, 2006 or Dec 01, CargoMax will only work if your computers region is set to English (Australia) or equivalent. This fixes the decimal and date format issues noted above. To check and change your computers region go Start Control Panel Regional & Language Options, and select English (Australian) from the pull down list. 19

21 Notes 20

22 Phone or SMS Louis Andy Bradley Refren Norman Weng Badge

23 Powerful and easy to use CargoMax TM USB has been written by Captain L. Koutelas 22