Hotel Service Unit 16 Q4 Quiz

hotel service unit 16 Q4

1 / 9

What is a potential disadvantage of an Active Controlled Tank system?

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

C) It only functions at high speeds

A) It can only be used in small vessels

D) It requires constant manual operation

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Why is an Active Controlled Tank system preferred in certain vessels over traditional bilge keels?

C) It is maintenance-free

D) It reduces vessel drag significantly

B) It requires no additional power

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

3 / 9

How are the water flows in an Active Controlled Tank system managed?

C) Manually by the crew

D) By adjusting the vessel’s speed

B) Through an automated control system with pumps and valves

A) Using a single directional pump

4 / 9

How does the water movement in an ACT system counteract vessel roll?

D) By displacing ballast away from the hull

B) By creating a counterweight that resists the roll motion

A) By stabilizing air pressure within the tanks

C) By rapidly emptying the tanks

5 / 9

What is the primary function of the control system in an Active Controlled Tank roll damping system?

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

A) To initiate manual adjustments

D) To increase vessel speed during heavy rolls

C) To maintain a constant water level in the tanks

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Where are Active Controlled Tanks typically located on a vessel?

D) Near the vessel's keel

A) At the bow and stern

B) Amidships, on both port and starboard sides

C) Directly under the main deck

7 / 9

What additional component is essential in an ACT system to detect vessel roll?

A) Radar system

D) GPS tracker

C) Wind sensor

B) Gyroscope or accelerometer

8 / 9

How does an Active Controlled Tank system maintain stability during varying sea conditions?

A) By manually adjusting the water levels based on wave height

C) By keeping the water level constant

D) By reducing the vessel’s speed in high seas

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

9 / 9

What is the primary component used in an Active Controlled Tank roll damping system to counteract vessel roll?

D) Internal air compression systems

C) Heavy steel weights

A) Bilge keels

B) Water ballast tanks with controlled water flow

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