Which technique could be used to give a more...

Question 1 / 2707066636eec28f7522a1c51ce8d

Question 1 of 2707066636eec28f7522a1c51ce8d

Which technique could be used to give a more comfortable roll to a stiff vessel?

Question 1 of 27070

Which technique could be used to give a more comfortable roll to a stiff vessel?

🔍 Key Concepts

• Stiff vessel vs tender vessel (what GM and roll period mean for each) • Effect of moving weights up or down on the vessel’s center of gravity (G) and metacentric height (GM) • How weight distribution fore-and-aft or athwartships can change rolling behavior

💭 Think About

• Think about what makes a vessel’s roll very quick and uncomfortable. Do you want to make GM bigger or smaller for a stiff vessel? • Which choice will tend to raise the center of gravity (G) and thus reduce GM, leading to a longer, softer roll? • For each option, imagine whether you are putting weight high or low, and close to or away from the centerline, and how that affects stability and roll period.

✅ Before You Answer

• Identify which options raise the center of gravity versus which lower it • Check which option would lengthen the roll period (slower, more comfortable roll) instead of making it quicker • Verify which options change initial stability (GM) significantly, and in which direction

Question 1 of 27070

Which technique could be used to give a more comfortable roll to a stiff vessel?

Concentrate weights on upper decks

Ballast the peak tanks

Add weight near the centerline of the lower hold

Move weights lower in the ship