Тест по Heavy Weather Damage, Container Vessel (CES v5.0)

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Правильные ответы:
1

By 31 December 1997, which ships were required to carry an approved CSM, under SOLAS 74? Select all applicable answers:

Ваш ответ правильный:

All new container ships.; All ships of 500 gt and upwards engaged in the carriage of cargoes other than solid and liquid bulk cargoes.
2

During heavy weather what (approximate) transverse force could be imparted to a five-tier stack of forty-foot containers?

Ваш ответ правильный:

18 tonnes.
3

During heavy weather, what could be the approximate induced transverse wind force acting on a five-tier stack of containers?

Ваш ответ правильный:

18 tonnes.
4

During pitching, when will pressure changes on the forward container stacks reach their maximum values?

Ваш ответ правильный:

When the bows reverse their direction of monitor.
5

For a container stowed in a position equidistant from the roll and pitch axes of your ship, what would reduce the accelerations to one quarter?

Ваш ответ правильный:

Doubling the roll period.
6

How do the accelerations always affect a container lashing system?

Ваш ответ правильный:

By inducing forces into the entire lashing system.
7

How should twistlocks be greased? Select all applicable answers:

Ваш ответ правильный:

By injecting grease into the shaft by inserting the shaft nozzle between the cone and housing.; By injecting grease to the wire handle by inserting the nozzle into the housing through the handle guide.
8

How would you properly grease turnbuckles?

Ваш ответ правильный:

By first cleaning dirty or rusty spindle threads and then applying grease to them.
9

How would you properly grease twistlocks? Select all applicable answers:

Ваш ответ правильный:

By injecting grease into the shaft by a specially designed shaft nozzle.; By injecting grease to the wire handling by inserting the shaft handle into the housing through the handle guide.
10

How would you properly maintain the container lashing equipment on board your ship? Select all applicable answers:

Ваш ответ правильный:

By ensuring that the amount of lashing equipment was sufficient to properly secure the maximum number of containers to be carried.; By ensuring that adequate spares and replacements are carried.
11

How would you recognise the onset of parametric rolling?

Правильный ответ:

When your ship starts to encounter two waves during one roll cycle.; When your ship is pitched by the bow, at maximum roll to one side.; When upright, your ship is pitched down by the stern.

Ваш ответ:

When your ship starts to roll in beam seas.; When your ship starts to encounter two waves during one roll cycle.; When upright, your ship is pitched down by the stern.
12

How would you recognise the possible onset of Parametric rolling? Select all applicable answers:

Ваш ответ правильный:

The ship experiences seas from astern.; The ship starts developing large roll angles within a very short time.; The ship rolls once for every two waves encountered.
13

If a ship were to meet head-on seas, what would the change in the ship’s direction of motion result in? Select all applicable answers:

Ваш ответ правильный:

Forces being transmitted to the containers.; Tensile and compression forces being imposed on the lashing rods.
14

If you were on a large container ship with flared bows and a flat, wide stern experiencing seas in near-gale conditions, what action would you take to avoid the possible onset of Parametric rolling?

Ваш ответ правильный:

Maintain sea speed and steer a course preferably with the seas approaching from close to the beam, so that roll and pitch motions do not synchronise.
15

If you were on a large container ship with flared bows and a wide, flat stern experiencing gale conditions, what action would you avoid taking? Select all applicable answers:

Правильный ответ:

Heading your ship into the seas.; Heaving to.; Reducing speed to the minimum to which your ship will respond, under the circumstances.

Ваш ответ:

Heaving to.; Reducing speed to the minimum to which your ship will respond, under the circumstances.; Keeping the seas abeam.
16

In accordance with what should the lashing and securing of containers be carried out?

Ваш ответ правильный:

The CSM.
17

In what sea condition will parametric rolling not be included?

Правильный ответ:

In beam seas.

Ваш ответ:

In head seas.
18

Once you have calculated the transverse forces acting on a particular container, what would you do with this information? Select all applicable answers:

Правильный ответ:

Compare the information with the permissible transverse forces of the containers Classification Society.; Compare the information with the permissible forces given by the loading computer.

Ваш ответ:

Keep it on file for future reference.; Compare the information with the permissible transverse forces of the containers Classification Society.; Compare the information with the permissible forces given by the loading computer.
19

To what limits do lashing equipment manufacturers design their equipment?

Ваш ответ правильный:

To those imposed by Classification Societies.
20

Under OSHA regulations what item of container securing equipment is not feasible when using ordinary cranes? Select all applicable answers:

Ваш ответ правильный:

Semi-automatic twistlocks.; Liftlocks.
21

Under OSHA regulations what inherent problems are associated with a container spreader suspended from a single point? Select all applicable answers:

Ваш ответ правильный:

It precludes the use of semi-automatic twistlocks due to the suspension not being vertical at the four lifting points.; It does not allow the spreader to be lifted vertically at the four corner castings.; Containers cannot be lifted off their stacks in a vertical or relatively stable manner.
22

Under OSHA regulations, which of the following is a “positive container securing device”? Select all applicable answers:

Ваш ответ правильный:

A liftlock.; On-deck cell guides.; A safety stacker.
23

What action(s) would contribute to the prevention of lashing failure?

Ваш ответ правильный:

Being vigilant and constantly checking container lashings during cargo loading operations.
24

What action(s) would contribute to the prevention of lashing failure? Select all applicable answers:

Ваш ответ правильный:

Checking container lashings during cargo operations.; Inspecting base twistlocks regularly for wear-down and/or cracks.
25

What are some of the basic causes for container stows to collapse? Select all applicable answers:

Ваш ответ правильный:

Incorrect application of the “wind” lashings.; Carrying heavier over lighter containers.; The use of left and right-hand twistlocks leading to the mistaken notion that the containers are “locked”.
26

What are some of the basic causes for container stows to collapse? Select all applicable answers:

Правильный ответ:

Inadequate or incorrect securing.; Container stacks being too heavy and too high, overall.; Wind forces being ignored when deciding the method and system of lashing.; Repeated shock loads in a seaway.

Ваш ответ:

Inadequate or incorrect securing.; Container stacks being too heavy and too high, overall.; Wind forces being ignored when deciding the method and system of lashing.
27

What are the advantages of securing containers to a lashing bridge? Select all applicable answers:

Правильный ответ:

The lashings typically extend to the bottom of the third tier of containers.; The lashings resist the overturning of containers.; Corner-post tension and compression reactions are reduced.; Container stacks will generally have higher permissible weights.

Ваш ответ:

The lashings typically extend to the bottom of the third tier of containers.; Corner-post tension and compression reactions are reduced.; Container stacks will generally have higher permissible weights.
28

What are the disadvantages of securing containers to a Lashing Bridge? Select all applicable answers:

Правильный ответ:

The lashing bridge becomes less effective as the longitudinal distance between it and the container increases.; The lashing bridge becomes less effective when stowing forty-foot containers in bays arranged for alternative forty-five foot or forty-eight foot containers.

Ваш ответ:

Corner-post tension and compression reactions are reduced.; The lashing bridge becomes less effective as the longitudinal distance between it and the container increases.; The lashing bridge becomes less effective when stowing forty-foot containers in bays arranged for alternative forty-five foot or forty-eight foot containers.
29

What are the limitations of CSMs? Select all applicable answers:

Ваш ответ правильный:

They do not cover all permutations and eventualities to which a ship may be exposed.; They provide stowage and securing instructions for pre-approved load conditions only.; They do not cover all information provided by the loading computer.; They are often not updated in respect of new items or models of container lashing gear supplied to a vessel.
30

What are the responsibilities of a ship owner in ensuring that containers can safely be carried on board?

Ваш ответ правильный:

The owner must provide and maintain adequate supplies of container securing equipment.; The owner must ensure that the items supplied are of the required strength.; The owner must provide a comprehensive stowage and securing manual that is understood by the ship’s staff.
31

What causes longitudinal accelerations? Select all applicable answers:

Ваш ответ правильный:

The rate of change of velocity.; A ship meeting head seas.; A ship influenced by stern seas.
32

What causes vertical accelerations?

Ваш ответ правильный:

Heaving, Pitching and Rolling.
33

What causes, or contributes to, tipping? Select all applicable answers:

Ваш ответ правильный:

Heavy containers stowed over lighter ones.; Incorrect declarations of weights by shippers and/or load-planners.; Ship’s officer unable to precisely calculate the forces acting on a particular stow.
34

What contributes to the safe carriage of containers? Select all applicable answers:

Ваш ответ правильный:

Using twistlocks whenever possible.; Never exceeding stack weight(s).
35

What dangers are associated with attempting to steer out of following seas? Select all applicable answers:

Ваш ответ правильный:

Large course alterations are required.; Course alterations may result in rolling.; Large roll angles may quickly develop, setting up forces in the container lashing system.
36

What does heaving result in? Select all applicable answers:

Правильный ответ:

Vertical accelerations that act along the corner posts of containers.; Possible piercing of tank tops or hatch pontoons by the lowest tiers of containers.

Ваш ответ:

Longitudinal accelerations that act on hatch pontoons.; Vertical accelerations that act along the corner posts of containers.; Possible piercing of tank tops or hatch pontoons by the lowest tiers of containers.
37

What does the integrity of a container lashing system depend upon?

Ваш ответ правильный:

The weakest component of that system.
38

What information do loading computers provide us with? Select all applicable answers:

Ваш ответ правильный:

Examples of the forces that can be expected in various stowage positions on board.; Facilities for automatic monitoring of individual stack weights.; Alarms when stack weight exceeds the designed maximum stack weight.; Heeling moments caused by wind loads.
39

What information is included in loading computers? Select all applicable answers:

Ваш ответ правильный:

Automatic monitoring of total individual stack weights.; Angles of roll and corresponding metacentric heights (GM) within specifications.; Alarms when stack weight exceeds the designed maximum stack weight.; Wind-load heeling moments.
40

What is the most important factor to be considered when deciding the lashing system for a sea route during a particular season?

Ваш ответ правильный:

The extent of transverse accelerations.
41

What is tipping?

Ваш ответ правильный:

A force that tends to pull out or separate corner castings or container twistlocks.
42

What led to the United States Coast Guards proposal to include carriage requirements for cargo securing manuals under SOLAS 74?

Ваш ответ правильный:

The overboard loss of containers, from a ship, containing arsenic trioxide.
43

What produces longitudinal accelerations?

Ваш ответ правильный:

Pitching, slamming, surging and yawing.
44

What should be maintained in the file covering items of lashing gear? Select all applicable answers:

Ваш ответ правильный:

Approval certificates for portable securing equipment on board.; An up to date inventory of container lashing equipment on board.; Appropriate remarks in respect of defective items.; New items supplied to the vessel, or requested for.
45

What stability variations contribute to parametric rolling of large container ships as they encounter two waves during one roll cycle?

Правильный ответ:

Increased water plane areas with a wave through amidships.; Decreased stability as a wave crest passes amidships.

Ваш ответ:

Decreased stability as a wave crest passes amidships.
46

What would ensure the safe usage of deck fittings? Select all applicable answers:

Ваш ответ правильный:

That the main shafts on “D” rings are not wasted.; That welded seams along the main shafts on “D” rings are not cracked.; That key holes of deck foundations are not elongated, through wastage or diminution.
47

What would ensure the safe usage of dovetail foundations? Select all applicable answers:

Ваш ответ правильный:

That the chamfered edges are not, in any way, curled or distorted.; That a twistlock or sliding cone can easily slide into the foundation.
48

What would help prevent container stows from collapsing?

Ваш ответ правильный:

Using sound items of securing equipment, whether fixed or portable.
49

What would you look for when inspecting bridge fittings? Select all applicable answers:

Ваш ответ правильный:

Proper lubrication of the item.; Seizing.; Buckling.
50

What would you look for when inspecting deck sockets? Select all applicable answers:

Ваш ответ правильный:

Signs of pitting.; Clogging of drain holes.; Cracking in welded seams.
51

What would you look for when inspecting lashing plates? Select all applicable answers:

Ваш ответ правильный:

Pitting.; Cracks in welded seams.; Plate distortion.; Reduction of plate thickness.
52

What would you look for when inspecting lashing rods? Select all applicable answers:

Правильный ответ:

Signs of pitting.; Straightness of rods.

Ваш ответ:

Signs of pitting.; Straightness of rods.; Stretching of rods.
53

What would you look for when inspecting turnbuckles? Select all applicable answers:

Ваш ответ правильный:

Signs of pitting.; Seizing or cracking.; Bending.
54

What would you look for when inspecting twistlocks? Select all applicable answers:

Ваш ответ правильный:

The bases of twistlocks are not cracked.; “Sacrificial exchangeable wear plates”, where fitted, have not reached the predefined level of wear and tear.; Freedom of cone movement when operated by the handle.
55

What would you look for when inspecting “D” rings? Select all applicable answers:

Ваш ответ правильный:

Cracks in welded seams.; Deterioration of the retaining sleeve.; Wastage of the main shaft.
56

When do wind forces cause heeling moments on container ships? Select all applicable answers:

Правильный ответ:

When there are high container stacks on deck.; When on-deck containers present a favourable profile to the wind.

Ваш ответ:

When there are high container stacks on deck.; When on-deck containers present a favourable profile to the wind.; When on-deck containers are loaded two-high.
57

When does a container experience a force of 100 % of its weight plus cargo?

Ваш ответ правильный:

When heaving, in linear motion.
58

When will a ship experience “Resonance”? Select all applicable answers:

Правильный ответ:

When it encounters one wave during one roll cycle.; When it encounters beam seas.

Ваш ответ:

When it encounters one wave during one roll cycle.; When it encounters beam seas.; When it encounters head seas.
59

When will parametric rolling occur? Select all applicable answers:

Правильный ответ:

When a ship is meeting seas fine on the port bow.; When successive wavelengths are of the order between 0,8 and twice the ship’s length.; When wave heights exceed a critical level.

Ваш ответ:

When a ship’s natural period of roll is approximately half the wave encounter period.; When a ship is meeting seas fine on the port bow.; When successive wavelengths are of the order between 0,8 and twice the ship’s length.; When wave heights exceed a critical level.
60

When will parametric rolling occur? Select all applicable answers:

Ваш ответ правильный:

When a ship is running with the seas from astern.; When roll and pitch motions occur in phase with each other.; When a ship’s low speed results in large roll amplitudes.
61

When will parametric rolling occur? Select all applicable answers:

Ваш ответ правильный:

When a ship is running with the seas fine on the quarter.; When roll and pitch motions are in phase.; When a ship’s natural period of roll is equal to approximately twice the wave encounter period.
62

When will “Resonance” occur?

Ваш ответ правильный:

When a ship encounters one wave during one roll cycle, from beam seas.
63

When would vertical accelerations reach their maximum values on the containers stowed in the forward and aft container bays?

Правильный ответ:

When a ship is at its extreme pitch angle.

Ваш ответ:

When a ship heaves.
64

When would you expect large roll amplitudes to occur? Select all applicable answers:

Ваш ответ правильный:

When the ship is experiencing beam seas.; When the ship is running before the seas.; When the ship is experiencing head seas.
65

Where are the statutory requirements for the carriage of CSMs found? Select all applicable answers:

Ваш ответ правильный:

In chapters six and seven of SOLAS.
66

Where would you expect to find carriage requirements for cargo securing manuals, in SOLAS 74/78? Select all applicable answers:

Ваш ответ правильный:

Chapter VI.; Chapter VII.
67

Where would you find tools to assist in calculating wind pressure? Select all applicable answers:

Ваш ответ правильный:

In the CSM.; In the loading computer program.
68

Where would you find tools to assist you with calculating wind forces? Select all applicable answers:

Ваш ответ правильный:

In the CSM.; From programs in the loading computer.
69

Which of these motions has a marked effect on a ship’s stability, whilst also affecting container corner posts and the cargo securing system in general?

Ваш ответ правильный:

Heaving.
70

Who can approve a CSM? Select all applicable answers:

Ваш ответ правильный:

The Flag State.; The current Classification Society, on behalf of the Flag State.
71

Who was primarily responsible for proposing mandatory requirements for certain types and sizes of ships to carry a cargo securing manual?

Ваш ответ правильный:

The United States Coast Guard (USCG).
72

Why do acceleration forces differ somewhat from those shown in a ship’s CSM? Select all applicable answers:

Правильный ответ:

Because acceleration values in the CSM are calculated prior to a ship entering sea service.; Because acceleration values in the CSM are “as anticipated”.

Ваш ответ:

Because acceleration values in the CSM are in excess of what is expected at sea.; Because acceleration values in the CSM are generally stated for all container ships.; Because acceleration values in the CSM are calculated prior to a ship entering sea service.; Because acceleration values in the CSM are “as anticipated”.
73

With respect of Classification Societies, what is the concern regarding container lashing equipment? Select all applicable answers:

Правильный ответ:

Despite their respective rules and regulations, the industry still lacks a standard approach to the securing of containers aboard ships.; Rules applied by one Classification Society differ from another.; The risk level associated with container stowage in accordance with the various class rules is inconsistent.

Ваш ответ:

Despite their respective rules and regulations, the industry still lacks a standard approach to the securing of containers aboard ships.; Rules applied by one Classification Society differ from another.; The risk level associated with container stowage in accordance with the various class rules is inconsistent.; Having been approved by Class, the information contained in the CSM is still unreliable.
74

With respect to OSHA requirements when can stevedores work on top of containers? Select all applicable answers:

Ваш ответ правильный:

When stevedores wear appropriate safety gear.; When a stevedore standing on deck, is trying to unlock a container stowed in a high tier by means of a long lashing pole.; When bridge clamps are to be installed.
75

With respect to container lashings, what could happen in heavy weather if the extreme pitch angle occurred simultaneously with heaving? Select all applicable answers:

Правильный ответ:

Twistlock failure could occur.; Turnbuckles could fail.

Ваш ответ:

Twistlock failure could occur.; Turnbuckles could fail.; Hatch pontoon cleats could fail.
76

With respect to lashing bars and turnbuckles, which of the following statements is true? Select all applicable answers:

Ваш ответ правильный:

Lloyd’s Register (LR), Germanischer Lloyd (GL), Det Norske Veritas (DnV) and Bureau Veritas (BV) allow a SWL of 245 kN.; American Bureau of Shipping (ABS) allows a SWL of 293 kN.
77

With respect to twistlock springs, what would ensure their safe operation?

Ваш ответ правильный:

The spring, holding the twistlock cone in the “closed” position, should be resilent.
78

With what does a ship’s angle of pitch vary? Select all applicable answers:

Ваш ответ правильный:

The spring, holding the twistlock cone in the “closed” position, should be resilent.
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