Assessment: Operations in Polar Waters - Machinery and Engineering
- 15
- Questions
- No time limit
- 2
- Attempts left
- 70%
- Passing threshold
Question 1 of 15
How many polar classes are defined under the general descriptions of the polar code?
Correct - The polar code lists 7 general classes for ice.
Incorrect - You should review the Polar Class Ships section.
Question 2 of 15
Why are CPP-type propellers usually found on polar-classed vessels?
Correct - CPP-type propellers are usually found on polar-classed vessels because they are continuously turning even when the vessel is stopped in the water.
Incorrect - You should review the Propulsion and Steering Systems used in Polar Waters section.
Question 3 of 15
Where can the information with regards to Areas to Be Avoided (ATBAs) be found?
Correct - Areas to be avoided (ATBAs) are published for Arctic and Antarctic waters and these should be noted and duly avoided. More information on ATBAs can be found in IMO SN.1/Circ.331.
Incorrect - You should review the Precautions when Transiting MARPOL Special Areas or PSSAs section.
Question 4 of 15
Due to the way ice interacts with the pressure fields of ships created as they pass through the water, certain areas require greater strengthening than others. Which are these areas?
Correct - Due to the way ice interacts with the pressure fields of ships created as they pass through the water, certain areas require greater strengthening than others. These are found around the stern and propeller, along the waterline of the vessel from below the lightest draft to above the deepest and at the bow.
Incorrect - You should review the Design and Strength of Vessels section.
Question 5 of 15
'Polar Class 7 (PC7) is the lowest level of classification and has the smallest window of operation in polar waters.' Is this statement true or false?
Correct - This statement is true. Polar Class 7 (PC7) is the lowest level of classification and has the smallest window of operation in polar waters.
Incorrect - You should review the Polar Class Ships section.
Question 6 of 15
Who issues the certificate reflecting the "ice-class" features on a specific vessel?
Correct - The "ice-class" features allow for greater survivability and flexibility in navigating frozen waters and will be reflected in the vessel's certification from the Classification Society she is registered with.
Incorrect - You should review the Polar Class Ships section.
Question 7 of 15
Which of the following is not found on the hull of an Ice-Class ship?
Correct - No hull protrusions, such as fin stabilisers, that would become damaged from striking ice
Incorrect - You should review the Design and Strength of Vessels section.
Question 8 of 15
What may occur in polar waters due to icing on the superstructure?
Correct - Accretion of ice may lead to a reduction of positive stability and a dangerous condition.
Incorrect - You should review the Preparation Prior to Entry in Polar Waters section.
Question 9 of 15
For how long may oil pollution impact a marine ecosystem?
Correct - Oil pollution may impact a marine ecosystem for 50 years or more.
Incorrect - You should review the Precautions when Transiting MARPOL Special Areas or PSSAs section.
Question 10 of 15
Is this statement true or false? 'Any essential equipment or system which is deemed required to ensure the safe operation of the specific ship, or any systems provided onboard for preventing pollution, should be provided with a single heating system.'
Correct - This statement is false. Any essential equipment or system which is deemed required to ensure the safe operation of the specific ship or any systems provided onboard for preventing pollution, if located in spaces that might be subject to the extreme temperature outside, should be provided with an independent heating system in the case of failure of the primary heating system.
Incorrect - You should review the Propulsion and Steering Systems used in Polar Waters section.
Question 11 of 15
Is this statement true or false? 'It is common to have significant cladding and protections for the propeller. This extra steel does not affect the performance overly, but it is there to ensure that larger pieces of floating ice do not strike the propeller directly.'
Correct; well done. True. It is common to have significant cladding and protections for the propeller. This extra steel does not affect the performance overly, but it is there to ensure that larger pieces of floating ice do not strike the propeller directly.
Incorrect - You should review the Propulsion and Steering Systems used in Polar Waters section.
Question 12 of 15
What main advantage does an azimuth drive have over a conventional propeller drive in polar waters?
Correct - Azimuth drive has no rudder which means fewer components that may be damaged by ice.
Incorrect - You should review the Propulsion and Steering Systems used in Polar Waters section.
Question 13 of 15
Which of the following is important to be checked before entering polar areas?
Correct - Important checks before entering polar waters may include but not be limited to; draining of the freshwater lines on deck, draining of the fire main, greasing and lubricating all exposed machinery, purging airlines and checking for condensation.
Incorrect - You should review the Preparation Prior to Entry in Polar Waters section.
Question 14 of 15
Is this statement true or false? 'With the numerous ice classification levels, all features change depending on the class.'
Correct - This statement is false. Despite the numerous ice classification levels, certain features remain constant across all of them. These include; Engine cooling arrangements that include inlets and outlets that are designed to remain ice-free.
Incorrect - You should review the Design and Strength of Vessels section.
Question 15 of 15
Is this statement true or false? 'Double bottoms over the entire breadth and length between the forepeak and afterpeak bulkheads must be available on all polar class ships.'
Correct - This statement is true. Double bottoms over the entire breadth and length between the forepeak and afterpeak bulkheads must be available on all polar class ships.
Incorrect - You should review the Polar Class Ships section.
You Passed This Quiz. Let’s Move On!
How many polar classes are defined under the general descriptions of the polar code?
Why are CPP-type propellers usually found on polar-classed vessels?
Where can the information with regards to Areas to Be Avoided (ATBAs) be found?
Due to the way ice interacts with the pressure fields of ships created as they pass through the water, certain areas require greater strengthening than others. Which are these areas?
'Polar Class 7 (PC7) is the lowest level of classification and has the smallest window of operation in polar waters.' Is this statement true or false?
Who issues the certificate reflecting the "ice-class" features on a specific vessel?
Which of the following is not found on the hull of an Ice-Class ship?
What may occur in polar waters due to icing on the superstructure?
For how long may oil pollution impact a marine ecosystem?
Is this statement true or false? 'Any essential equipment or system which is deemed required to ensure the safe operation of the specific ship, or any systems provided onboard for preventing pollution, should be provided with a single heating system.'
Is this statement true or false? 'It is common to have significant cladding and protections for the propeller. This extra steel does not affect the performance overly, but it is there to ensure that larger pieces of floating ice do not strike the propeller directly.'
What main advantage does an azimuth drive have over a conventional propeller drive in polar waters?
Which of the following is important to be checked before entering polar areas?
Is this statement true or false? 'With the numerous ice classification levels, all features change depending on the class.'
Is this statement true or false? 'Double bottoms over the entire breadth and length between the forepeak and afterpeak bulkheads must be available on all polar class ships.'
Too Bad! But That Wasn't Enough
How many polar classes are defined under the general descriptions of the polar code?
Why are CPP-type propellers usually found on polar-classed vessels?
Where can the information with regards to Areas to Be Avoided (ATBAs) be found?
Due to the way ice interacts with the pressure fields of ships created as they pass through the water, certain areas require greater strengthening than others. Which are these areas?
'Polar Class 7 (PC7) is the lowest level of classification and has the smallest window of operation in polar waters.' Is this statement true or false?
Who issues the certificate reflecting the "ice-class" features on a specific vessel?
Which of the following is not found on the hull of an Ice-Class ship?
What may occur in polar waters due to icing on the superstructure?
For how long may oil pollution impact a marine ecosystem?
Is this statement true or false? 'Any essential equipment or system which is deemed required to ensure the safe operation of the specific ship, or any systems provided onboard for preventing pollution, should be provided with a single heating system.'
Is this statement true or false? 'It is common to have significant cladding and protections for the propeller. This extra steel does not affect the performance overly, but it is there to ensure that larger pieces of floating ice do not strike the propeller directly.'
What main advantage does an azimuth drive have over a conventional propeller drive in polar waters?
Which of the following is important to be checked before entering polar areas?
Is this statement true or false? 'With the numerous ice classification levels, all features change depending on the class.'
Is this statement true or false? 'Double bottoms over the entire breadth and length between the forepeak and afterpeak bulkheads must be available on all polar class ships.'
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