CHIEF ENGINEER Unit 15 Q4

1 / 10

Why is ultrasonic testing favored for checking watertight integrity in certain areas of the hull?

D) It fills the hull with water

A) It is non-destructive and can reveal internal cracks

C) It measures the weight of the hull

B) It paints the hull

2 / 10

What is a significant reason for conducting an underwater inspection of a vessel during dry-docking?

C) To inspect and maintain the vessel’s underwater fittings, such as propellers and sea chests

B) To adjust the engine’s power output

D) To enhance the interior design of cabins

A) To increase the vessel’s speed

3 / 10

Which method would best test a compartment’s watertight integrity by directly assessing its seal?

B) Inspecting from a distance

D) Painting the compartment

C) Weighing the compartment

A) Using water pressure testing

4 / 10

Which of the following maintenance tasks is typically performed during a vessel’s dry-docking?

C) Replacing all crew members

D) Rearranging passenger seating

A) Installation of new electronic systems

B) Repainting and recoating of the hull

5 / 10

What is the purpose of using vacuum testing for the hull?

D) To repaint the hull

B) To ensure an airtight seal around openings

C) To increase fuel efficiency

A) To measure the speed of the vessel

6 / 10

Why is hull inspection and repair a common reason for dry-docking?

C) To check for damage and perform maintenance on areas below the waterline

B) To improve crew accommodation

D) To adjust cargo storage areas

A) To change the vessel’s weight

7 / 10

Which of the following is a primary reason for dry-docking a vessel?

C) To provide additional crew training

B) To remove marine growth and clean the hull

D) To re-paint the interior cabins

A) To increase the vessel’s cargo capacity

8 / 10

In which situation is water pressure testing most commonly used for hull integrity?

C) When compartments need to be verified under actual service conditions

B) When ultrasonic testing fails

D) When painting is required

A) When visual inspection is enough

9 / 10

Which of the following is a commonly used method to test the watertight integrity of a vessel's hull?

A) Visual inspection from shore

B) Ultrasonic testing

C) Checking the vessel’s weight

D) Observing crew operations

10 / 10

What is an advantage of using vacuum testing to check a hull’s watertight integrity?

B) It can detect leaks without fully immersing the hull

A) It requires no access to the hull exterior

D) It requires no specialized equipment

C) It is only used for aesthetic purposes

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