The value of the maximum righting arm...

🔍 Key Concepts

• Righting arm (GZ) and how it is measured between the lines of action of buoyancy (B) and gravity (G) • How the center of gravity (G) can move in three directions: longitudinal, transverse, and vertical • Which movement of G actually changes the length of the righting lever when the ship heels

💭 Think About

• When a vessel heels, which shift of the center of gravity will most directly change the moment arm between buoyancy and gravity? • Think about which direction of G’s movement gets it closer to or farther from the metacenter (M) when the vessel is upright. • Of the three directions (fore‑and‑aft, side‑to‑side, up‑and‑down), which one is used when we talk about GM (metacentric height) and the size of the GZ curve?

✅ Before You Answer

• Be clear on the definitions of longitudinal, transverse, and vertical centers of gravity. • Recall that GM (metacentric height) is measured in which direction from G to M. • Verify which of the options is directly tied to the size of GZ and initial stability, not to trim or flooding limitations.

The value of the maximum righting arm depends on the position of the center of buoyancy and which other item?

The longitudinal center of gravity

The transverse center of gravity

The vertical location of the center of gravity

The downflooding angle

🔍 Key Concepts

💭 Think About

✅ Before You Answer