Ship Maximum Cargo Intake Calculation
- Admin
- Nov 9, 2024
- 4 min read
Updated: 2 days ago
🔧 Before You Start Ship Maximum Cargo Calculation – Set Up Ship Data
Before using the Ship Maximum Cargo Intake Calculation Tool, you must first visit the Ship Data page. This step ensures all calculations use accurate information specific to your vessel.
✅ Required Data Pages
You’ll find links to three essential data sections:
Hydrostatic Tables (optional but recommended)
📌 Mandatory to Complete
These two sections must be completed in full. The saved data will be used automatically across all programs and calculations. You only need to save it once — typically when you first join the vessel.
⚠️ Please enter all values carefully based on your ship’s actual specifications. Pay attention to any remarks or guidance displayed during the saving process.
🧱 Optional: Hydrostatic Tables
Entering hydrostatic data here allows all tools to auto-populate displacement and draft values for faster, more precise results.
If you don’t have time to complete this section, don’t worry — you can enter the necessary hydrostatic values manually during each calculation.
When prompted, enter values above and below the required data.
📖 Record Book
Click the Book Icon at the top of the page to open your personal Record Book. This is for notes and saved reports, and is accessible only to you 🔐.
⚓️ Step 1: Define the Limit Point of the Ship
This section helps determine the ship maximum cargo that can be loaded without exceeding the draft limit at a specific voyage point (e.g., port, canal, or zone).
📝 Input Fields for Limit Point Calculation
MID Draft (m)
Enter the ship's mean draft at the limit point.
This is typically based on the most restrictive draft allowed during the voyage.
Density of Water (t/m³)
Enter the seawater density at the limit point (e.g., 1.025 t/m³).
This value directly affects displacement.
📊 Hydrostatic Data Input
Enter hydrostatic values above and below of the required data.
These values must be for Density 1.025 only.
If hydrostatic data is saved, click the “Insert Data” button to auto-fill values.
⚖️ Weights On Board at Limit Point
Enter the ship’s known weights at the time of reaching the limit point:
F.O. (mt) – Fuel Oil Remaining on Board
D.O. (mt) – Diesel Oil Remaining
L.O. (mt) – Lube Oil Remaining
Slop/Sewage (mt) – Waste tank content
Ballast (mt) – All seawater ballast
Fresh Water (mt) – Potable and technical water
Other Weights (mt) – Any other temporary/permanent weights
SAG Allowance (mt) – Optional buffer to reduce cargo if needed
Constant (mt) – Ship's constant (crew, stores, etc.)
📈 Result – Cargo On Board (mt)
The tool will calculate and display the maximum cargo onboard that can be loaded at the limit point, based on:
Draft and water density at the limit point
Displacement from hydrostatic input
Total weights on board
⚓️ Step 2: Determine the Departure Point of the Ship
This step calculates the required departure draft to ensure the vessel reaches the limit point with the planned cargo onboard.
🌊 Input Fields for Departure Draft Calculation
Density of Water (t/m³)
Enter the seawater density at the departure port.
Weights On Board at Departure:
F.O. (mt) – Fuel Oil
D.O. (mt) – Diesel Oil
L.O. (mt) – Lube Oil
Slop/Sewage (mt) – Waste liquids
Ballast (mt) – Seawater ballast
Fresh Water (mt) – Freshwater tanks
Other Weights (mt) – Any other weights at departure
📊 Hydrostatic Data Input
Enter values above and below of the required data.
Values must be for Density 1.025 only.
If hydrostatic tables were saved, click “Insert Data” to auto-fill the required values.
📈 Result – Departure Draft
The tool will display the Midship Mean Draft at Departure that ensures the ship reaches the limit point safely and within draft limits.
📂 Step 3: Enter and Save Voyage Details
After completing the calculation, enter the voyage-specific information:
Date – Select the calculation or operation date
Voyage – Enter the voyage number or route
Cargo – Type or name of cargo to be loaded
Remarks (optional) – Add any special notes or instructions
🔐 Your data is securely stored and only accessible in your personal account.
🖨️ Print or Save Your Report
Once everything is saved, you can generate a report for print or PDF export.
📄 To Print or Save:
Scroll to the bottom and click the “PRINT” button.
A new window will open with the formatted report.
Inside the report window:
Click the printer icon 🖨 at the top-right corner to open the print dialog.
Or press Ctrl + P on your keyboard to open print options.
From there, you can:
Print the report
Or choose “Save as PDF” to store it digitally
✅ Always review your entries before printing or saving for official use.
💬 Need Help?
If you have any questions or suggestions about using the Maximum Cargo Intake Calculation Tool, leave a comment below! Our Admin team is always available to assist 😊.
💚 Thank you for using Master Work Station — helping you calculate smarter, sail safer.
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