Draft Difference Calculator
Compare aft and forward draft while retaining the sign needed to identify trim direction.
Inputs
Updates as you typeResults
Trim · AFT − FWD
| Forward draft | 7.8 m |
|---|---|
| Aft draft | 8.5 m |
| Mean draft | 8.15 m |
| Trim condition | Trim by Stern |
Overview
Compare aft and forward draft while retaining the sign needed to identify trim direction.
Formula
Difference = AFT − FWD Mean = (AFT + FWD)/2
Example
How to use
- Check the units, enter the required values and select the available calculation options.
- Results update immediately. Correct any highlighted input before using the result.
- Choose display precision, copy the result or share the current inputs. Reset restores the example values.
Engineering notes
- The sign indicates direction; using only an absolute difference loses that information.
- No measurement tolerance or vessel-specific correction is applied. Use approved procedures for loading decisions.
Frequently asked questions FAQ
What happens when both readings are equal?
The difference is zero and the condition is Even Keel. No automatic tolerance band is applied to nearly equal readings.
Does display precision change the calculation?
No. Rounding is applied only to displayed results, not intermediate calculations. Small nonzero values use scientific notation. Consider the precision of the original measurements when interpreting results.
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