Product
Fleet & Vessel
10 vessels; certificate/survey tracking and bunker stems included
- 10 full users
- 1 sites
- 3 modules
Free tool
Freeboard Calculator
Calculate current freeboard and the margin to the load line from moulded depth, deck thickness and draft. No sign-up needed; results update as you type.
See the system that does this automaticallyOpen the live demoFreeboard Calculator: worked example
Example values: Moulded depth (D) 18.3 m, Deck plating thickness 20 mm, Mean draft 12.2 m, Minimum summer freeboard 5.9 m, TPC 58 t/cm. With these values the results are:
| Current freeboard | 6.120 m |
|---|---|
| Margin to load line | 0.220 m |
| Extra cargo possible with this margin | 1,276 t |
How to use: Freeboard Calculator
- Enter your own values: Moulded depth (D), Deck plating thickness, Mean draft, Minimum summer freeboard, TPC.
- Results are calculated as you type: Current freeboard, Margin to load line, Extra cargo possible with this margin.
- Check every step of the calculation in the formulas below.
How is it calculated?
- Current freeboard = [Moulded depth (D)] + [Deck plating thickness] ÷ 1,000 − [Mean draft]
- Margin to load line = [Current freeboard] − [Minimum summer freeboard]
- Extra cargo possible with this margin = max(0; [Margin to load line]) × 100 × [TPC]
Ship calculations are estimates based on standard formulas. Loading, stability and draft decisions must be based on the ship’s approved documents and loading computer.
Other tools running on Vessel Hydrostatics Engine
Calculates DWT, displacement, draft, trim, TPC and MCT relationships with standard naval formulas; results must be checked against approved vessel data.
FCRSOFT
FCRSOFT does this for you automatically
You don’t need to do the calculations and checks on this page by hand every day. FCRSOFT derives them all automatically from the records entered in the field.
- DWT, TPC, draft and capacity data are stored on vessel cards.
- Certificate and document expiry dates are tracked, with warnings before they lapse.
- Voyage estimates use vessel data automatically.
Frequently asked questions
How is Freeboard Calculator calculated?
Calculate current freeboard and the margin to the load line from moulded depth, deck thickness and draft. The calculation uses Vessel Hydrostatics Engine: Calculates DWT, displacement, draft, trim, TPC and MCT relationships with standard naval formulas; results must be checked against approved vessel data.
How is Current freeboard found?
Current freeboard = [Moulded depth (D)] + [Deck plating thickness] ÷ 1,000 − [Mean draft]. With the example values (Moulded depth (D) 18.3 m, Deck plating thickness 20 mm, Mean draft 12.2 m, Minimum summer freeboard 5.9 m, TPC 58 t/cm) the result is 6.120 m.
How is Extra cargo possible with this margin found?
Extra cargo possible with this margin = max(0; [Margin to load line]) × 100 × [TPC]. With the example values (Moulded depth (D) 18.3 m, Deck plating thickness 20 mm, Mean draft 12.2 m, Minimum summer freeboard 5.9 m, TPC 58 t/cm) the result is 1,276 t.
Worked example: Freeboard Calculator
Example values: Moulded depth (D) 18.3 m, Deck plating thickness 20 mm, Mean draft 12.2 m, Minimum summer freeboard 5.9 m, TPC 58 t/cm. Current freeboard: 6.120 m; Margin to load line: 0.220 m; Extra cargo possible with this margin: 1,276 t.
Is Freeboard Calculator free?
Yes. The tool is free, needs no sign-up and runs in your browser; the data you enter is not stored.
Can FCRSOFT do this calculation automatically?
FCRSOFT stores DWT, TPC and draft data on vessel cards and uses it automatically in voyage estimates. You can try the Fleet & Vessel package in the live demo without installing anything.
Do the results replace official ship calculations?
No. Ship calculations are estimates based on standard formulas. Loading, stability and draft decisions must be based on the ship’s approved documents and loading computer.
FCRSOFT solutions
All inclusive
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- 30 full users
- 1 sites
- 69 modules
