Hotel Service Unit 16 Q1 Quiz

Correct Answer:
C) To provide maximum resistance to rolling motions across the beam

Explanation:
Positioning bilge keels longitudinally along the hull’s sides, near the bilge, maximizes their effectiveness in reducing roll, as they offer resistance to water flow during the vessel’s rolling motion.

Correct Answer:
B) Cost and maintenance requirements

Explanation:
Bilge keels are cost-effective and low-maintenance, which can make them a preferable choice for vessels where budget and maintenance simplicity are priorities.

Correct Answer:
B) They are generally maintenance-free

Explanation:
Bilge keels are passive and fixed structures, so they require minimal maintenance compared to active stabilization systems with moving parts.

Correct Answer:
A) They require no power to operate

Explanation:
Bilge keels are passive stabilization devices, meaning they work without any external power source, making them low-maintenance and cost-effective.

Correct Answer:
C) To enhance stability by increasing resistance to roll at the vessel's widest point

Explanation:
The bilge area is the widest point on the hull, and locating the keels here ensures effective roll reduction as they provide maximum hydrodynamic resistance.

Correct Answer:
C) They are less effective at stabilizing than fin stabilizers

Explanation:
Bilge keels reduce roll but do not provide the same level of stabilization as active systems like fin stabilizers, which adjust in real-time to roll conditions.

Correct Answer:
B) By welding along their entire length to the hull

Explanation:
Bilge keels are welded to the hull along their length to ensure a secure, permanent attachment that withstands hydrodynamic forces and provides effective roll damping.