Hotel Service Unit 16 Q4 Quiz

Correct Answer:
B) Water ballast tanks with controlled water flow

Explanation:
An ACT roll damping system relies on ballast tanks filled with water. The water flow within these tanks is controlled to counteract vessel roll, providing stability.

Correct Answer:
B) Amidships, on both port and starboard sides

Explanation:
Placing ACT tanks amidships on both sides allows for effective roll reduction, as this is the area with the greatest impact on roll stability.

Correct Answer:
B) Through continuous adjustments made by the automated control system in response to sensor data

Explanation:
The control system continuously adapts to changing sea conditions, adjusting water movement to maintain optimal roll stability.

Correct Answer:
B) It increases fuel consumption due to the weight of water and operational pumps

Explanation:
The weight of water in the tanks and the energy used by pumps may slightly increase fuel consumption, especially if the system operates continuously in rough seas.

Correct Answer:
B) Gyroscope or accelerometer

Explanation:
A gyroscope or accelerometer detects vessel roll and provides data to the control system, which adjusts water flow in the tanks to counteract the roll.

Correct Answer:
A) It is effective at all speeds, including low and stationary conditions

Explanation:
An ACT system is beneficial because it actively adjusts water flow, providing stability even at low speeds or when the vessel is stationary, unlike bilge keels, which require movement.

Correct Answer:
B) By creating a counterweight that resists the roll motion

Explanation:
The controlled water movement in the tank generates a counter-force to the roll, balancing the vessel’s movement and reducing roll amplitude.

Correct Answer:
B) To automatically adjust water flow based on real-time roll data

Explanation:
The control system receives data on roll angles and automatically adjusts the flow of water in the tanks to provide an opposing force, reducing roll.

Correct Answer:
B) Through an automated control system with pumps and valves

Explanation:
The ACT system uses an automated control system to adjust water flow via pumps and valves, allowing real-time response to vessel movement and maximizing stability.