GM Change from Weight Shift
Change in GM when a weight is shifted vertically on board - GG' = w·d/Δ then ΔGM = −GG'.
GG' (vertical shift)
0.0273m
ΔGM (upward shift)
-0.0273m
Formula, assumptions, and limits
Shifting weight upward raises KG and reduces GM. Negative deltaGM when weight raised. For transverse shifts use the list-angle formula separately.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Mass shifted | t | loading plan | |
| Distance moved | m | deck drawings | |
| Displacement | t | loading computer |