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competency Quiz on c10, created by mrk nthny on 06/08/2016.
mrk nthny
Quiz von mrk nthny, aktualisiert more than 1 year ago
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Erstellt von mrk nthny vor fast 8 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Reserve buoyancy is __________.
Antworten
  • the watertight portion of a vessel above the waterline
  • also called GM
  • the void portion of the ship below the waterline which is enclosed and watertight
  • affected by the number of transverse watertight bulkheads

Frage 2

Frage
A vessel is tender if cargo weight is __________.
Antworten
  • concentrated high and the double bottoms empty
  • concentrated low and the double bottoms empty
  • evenly distributed vertically with the double bottoms full
  • concentrated and with the double bottoms full

Frage 3

Frage
The purpose of the inclining experiment is to __________.
Antworten
  • determine the lightweight center of gravity location
  • determine the location of the metacenter
  • verify the hydrostatic data
  • verify data in the vessel's operating manual

Frage 4

Frage
Metacentric height is an indication of a vessel's stability __________.
Antworten
  • for small angles of inclination
  • for all angles of inclination
  • for large angles of inclination
  • all of the above

Frage 5

Frage
Transverse stability calculations require the use of __________.
Antworten
  • hydrostatic curves
  • hog or sag calculations or tables
  • general arrangement plans
  • cross-sectional views of the vessel

Frage 6

Frage
Which statement is true regarding the free surface effect?
Antworten
  • It decreases at increased angles of heel due to pocketing when a tank is 90% full.
  • It increases in direct proportion to the length of the tank times the breadth squared.
  • It decreases in direct proportion to increasing specific gravity of the liquid in the tank.
  • In practice, the correction is considered to be a virtual reduction of KG.

Frage 7

Frage
Which will be a result of removing on-deck containers?
Antworten
  • Metacentric height will increase
  • KG will increase
  • KB will increase
  • Reserve buoyancy will decrease

Frage 8

Frage
In order to minimize the effects of a tender vessel, when carrying a cargo of lumber, you should __________.
Antworten
  • place the heaviest woods in the lower holds
  • maximize your deck load
  • distribute lumber so that those stowing most compactly per unit of weight are in the upper holds
  • keep the vessel's frame spaces free from lumber

Frage 9

Frage
Which is an indication of reserve buoyancy?
Antworten
  • Freeboard
  • Metacentric height
  • Righting moment
  • Rolling period

Frage 10

Frage
Which action will affect the trim of a vessel?
Antworten
  • Moving a weight forward
  • Moving high weights lower
  • Adding weight at the tipping center
  • All of the above

Frage 11

Frage
If a vessel is sagging, what kind of stress is placed on the sheer strake?
Antworten
  • Compression
  • Tension
  • Thrust
  • Racking

Frage 12

Frage
What will happen when cargo is shifted from the main deck into the lower hold of a vessel?
Antworten
  • The GM will increase.
  • The metacenter will move upward
  • The center of buoyancy will move upward
  • All of the above

Frage 13

Frage
How do you improve a vessel’s stability?
Antworten
  • Keep ballast water tank fulll
  • Increase the free surface effect of liquid storage tanks
  • Keep fuel tanks at least half full
  • Keep at least one fuel tank empty for slops

Frage 14

Frage
With regards to metacentric height, which of the following statement is true?
Antworten
  • It is used to indicate the quality of initial stability.
  • It is located below the center of buoyancy.
  • It is measured vertically above the center of buoyancy.
  • Its determination is the objective of the inclining experiment.

Frage 15

Frage
A vessel should normally behave as is all of its weight is acting downward through the center of gravity and all of its support is acting upward through the_____________.
Antworten
  • center of buoyancy
  • keel
  • tipping center
  • amidships section

Frage 16

Frage
Which of the listed initials is used to represent the indicator of initial stability?
Antworten
  • GM
  • KG
  • KM
  • GZ

Frage 17

Frage
The quality of initial stability is indicated by _______________.
Antworten
  • GM
  • KM
  • Deck load
  • Maximum allowed KG

Frage 18

Frage
A stiff wind has caused a difference to occur between the port and starboard drafts. What do you call this condition?
Antworten
  • Heel
  • List
  • Trim
  • Flotation

Frage 19

Frage
Pitching is angular motion of the vessel about which axis?
Antworten
  • Transverse
  • Longitudinal
  • Vertical
  • Centerline

Frage 20

Frage
Yawing is the angular motion of the vessel about what axis?
Antworten
  • Vertical
  • Longitudinal
  • Transverse
  • Centerline

Frage 21

Frage
Pitching is the rising and falling motion of the bow of a ship oscillating about what axis?
Antworten
  • Transverse
  • Longitudinal
  • Vertical
  • Centerline

Frage 22

Frage
The value of the maximum righting arm is dependent upon the position of the center of buoyancy and the _____________.
Antworten
  • vertical location of the center of gravity
  • longitudinal center of gravity
  • transverse center of gravity
  • downflooding angle

Frage 23

Frage
What is the stability term for the distance between the center of gravity (G) to the Metacenter (M)?
Antworten
  • Metacentri height
  • Metacentric radius
  • Height of the metacenter
  • Righting arm

Frage 24

Frage
What is termed as horizontal fore and aft motion of a vessel while underway?
Antworten
  • Surge
  • Pitch
  • Sway
  • Roll

Frage 25

Frage
What do you call the angular movement of a vessel about a horizontal line drawn from its bow to its stern?
Antworten
  • Rolling
  • Pitching
  • Heaving
  • Swaying

Frage 26

Frage
How can generally improve the vessel’s stability in a hazardous situation?
Antworten
  • Ballasting appropriate port or starboard deep tanks
  • Pumping double bottoms to the forepeak
  • transferring ballast athwartships
  • deballasting double bottoms

Frage 27

Frage
When flooding occurs in a damaged vessel, what happened to the reserve buoyancy?
Antworten
  • Decrease
  • Remains the same
  • Increase
  • Shifts to the low side

Frage 28

Frage
While on a voyage, the vessel's master observed that the vessel touched bottom, what should he immediately do?
Antworten
  • File a marine protest and underwater examination
  • Request for drydocking
  • Request for surveyor
  • Request for divers

Frage 29

Frage
Many uninspected vessels require load lines to indicate the maximum ___________.
Antworten
  • amidship's draft to which a vessel can be lawfully submerged
  • reserve buoyancy under any condition
  • angle of reduced freeboard for subdivision calculations
  • freeboard for the light ship displacement

Frage 30

Frage
The construction of vessel made of steel should have a grade in accordance with what guidelines?
Antworten
  • Rules of the classification society
  • Rules of the shipyard
  • Shipping law
  • Admiralty law

Frage 31

Frage
The construction of vessel made of steel should have a grade in accordance with the ____________.
Antworten
  • Rules of the classification society
  • Rules of the shipyard
  • Grade steel certificate
  • Rules of S.M.E. Code

Frage 32

Frage
What is the purpose of swash bulkheads?
Antworten
  • Reduce liquid movement and surging within a tank
  • Separate cargoes in a common tank
  • Used whenever the 'gray' water drain system connection is located in a bulkhead
  • Restrict flooding within a tank

Frage 33

Frage
The inclining experiment conducted on a merchant ship is the method for determining the exact location of the ______________.
Antworten
  • position of the ship’s center of gravity
  • ship’s displacement in seawater
  • position of the ship’s center of buoyancy
  • position of the ship’smetacenter

Frage 34

Frage
What do you call a vessel having a concentration of weight toward the top of the vessel?
Antworten
  • Tender
  • Stiff
  • Stiffbuoyant
  • Neutral

Frage 35

Frage
Angular motion about the vertical axis of a vessel is known as ________.
Antworten
  • yaw
  • surge
  • hog
  • roll

Frage 36

Frage
What effect will transferring fuel oil from #1P double bottom to #3P double bottom have on the trim of a vessel?
Antworten
  • The forward draft will decrease.
  • The mean draft will increase.
  • The mean draft will decrease.
  • The after draft will decrease.

Frage 37

Frage
Which of the listed conditions will occur to the ship’s center of gravity if 200 tons of steel is transferred to the ship’s cargo from shore side?
Antworten
  • The center of gravity will be lowered.
  • The reserve buoyancy will rise.
  • The center of gravity will remain in the same position.
  • The reserve buoyancy will remain the same.

Frage 38

Frage
What is the usual effect of moving weight from low in the vessel to above the main deck?
Antworten
  • The stability is decreased.
  • The stability is increased.
  • The draft is increased.
  • The reserve buoyancy is decreased.

Frage 39

Frage
What is the usual effect of moving weight from the main deck to a position lower in the vessel?
Antworten
  • The stability of the vessel is increased.
  • The trim of the vessel is increase.
  • The stability of the vessel is significantly decreased.
  • The vessel will list in proportion to the volume of the cargo shifted.

Frage 40

Frage
The reserve buoyancy of a ship consists of ________________.
Antworten
  • the part of the enclosed and watertight portion of a vessel above the waterline
  • the void portion of the ship below the waterline which is enclosed and watertight
  • all cofferdams, double bottoms, and wing tanks that are slack
  • the percentage of the volume of a compartment which can be occupied by water if flooded

Frage 41

Frage
What do you call a distance between the bottom of the hull and the waterline?
Antworten
  • Draft
  • Tonnage
  • Reserve buoyancy
  • Freeboard

Frage 42

Frage
Rolling is the angular motion of the vessel about what axis?
Antworten
  • Longitudinal
  • Transverse
  • Vertical
  • Centerline

Frage 43

Frage
What is termed as the difference between the initial trim of a vessel and the trim after a change in load has occurred?
Antworten
  • Change of trim
  • Trim
  • Final trim
  • Change of draft

Frage 44

Frage
Reserve buoyancy is the _________________.
Antworten
  • volume of intact space above the waterline
  • unoccupied space below the waterline
  • excess of the buoyant force over gravitational force
  • difference between buoyancy in salt and fresh waters

Frage 45

Frage
When is adverse effect due to free surface become apparent?
Antworten
  • When a portion of liquid is removed from a full tank
  • When the vessel is trimmed by the stern
  • When the vessel’s draft is decreased exposing more surface area to the wind and current
  • When the vessel’s draft is increased, thus increasing the vessel’s wetted surface area

Frage 46

Frage
What is the condition of a vessel trimmed down by the bow?
Antworten
  • Greater draft forward than aft
  • Zero trim
  • Low mean draft
  • Greater draft aft than forward

Frage 47

Frage
The difference between the initial trim of a vessel and the trim after a change in load has occurred is known as _____________.
Antworten
  • change of trim
  • trim
  • final trim
  • change of draft

Frage 48

Frage
The factor contributing to the greatest effect on the ship’s period of roll is the ____________.
Antworten
  • vertical weight distribution
  • length of KB
  • virtual rise in the center of gravity
  • moment to trim 1 inch (MT 1)

Frage 49

Frage
Longitudinal stability indicates the tendency of a ship to resist a ________.
Antworten
  • change in trim
  • change in list
  • change in mean draft
  • change in the period of roll

Frage 50

Frage
The angular movement of a vessel about a horizontal line drawn from its bow to its stern is _______________.
Antworten
  • rolling
  • Pitching
  • heaving
  • swaying

Frage 51

Frage
You may improve a vessel’s stability by _______________.
Antworten
  • keeping double-bottom fuel tanks topped off
  • increasing the free surface effect of liquid storage tanks
  • keeping fuel tanks at least half full
  • keeping at least one fuel tank empty for slops

Frage 52

Frage
Adverse effect due to free surface will become apparent when _____________.
Antworten
  • a portion of liquid is removed from a full tank
  • the vessel is trimmed by the stern
  • the vessel’s draft is decreased exposing more surface area to the wind and current
  • the vessel’s draft is increased, thus increasing the vessel’s wetted surface area

Frage 53

Frage
The reserve buoyancy of a vessel varies directly with changed in the vessel’s_____.
Antworten
  • freeboard
  • free surface
  • rolling period
  • none of the above

Frage 54

Frage
Pitching is angular motion of the vessel about which axis?
Antworten
  • Transverse
  • Longitudinal
  • Vertical
  • Centerline

Frage 55

Frage
Flooding of any compartment in a ship, resulting in a serious loss of reserve buoyancy, will always ________________.
Antworten
  • reduce ship stability
  • increase ship stability
  • cause a serious permanent list
  • decrease the heeling moment

Frage 56

Frage
Angular motion about the vertical axis of a vessel is known as ________.
Antworten
  • yaw
  • surge
  • hog
  • roll

Frage 57

Frage
Yawing is the angular motion of the vessel about what axis?
Antworten
  • Vertical
  • Longitudinal
  • Transverse
  • Centerline

Frage 58

Frage
The reserve buoyancy of a ship consists of ________________.
Antworten
  • the part of the enclosed and watertight portion of a vessel above the waterline
  • the void portion of the ship below the waterline which is enclosed and watertight
  • all cofferdams, double bottoms, and wing tanks that are slack
  • the percentage of the volume of a compartment which can be occupied by water if flooded

Frage 59

Frage
Reserve buoyancy is the _________________.
Antworten
  • volume of intact space above the waterline
  • unoccupied space below the waterline
  • excess of the buoyant force over gravitational force
  • difference between buoyancy in salt and fresh waters

Frage 60

Frage
When flooding occurs in a damaged vessel, reserve buoyancy _____________.
Antworten
  • decrease
  • remains the same
  • increase
  • shifts to the low side

Frage 61

Frage
A vessel should normally behave as is all of its weight is acting downward through the center of gravity and all of its support is acting upward through the ___________________.
Antworten
  • center of buoyancy
  • keel
  • tipping center
  • amidships section

Frage 62

Frage
The center of volume of the immersed portion of the vessel is the _________________.
Antworten
  • center of buoyancy
  • center of floatation
  • metacentric height
  • center of gravity

Frage 63

Frage
Which of the listed initials is used to represent the indicator of initial stability?
Antworten
  • GM
  • KG
  • KM
  • GZ

Frage 64

Frage
The quality of initial stability is indicated by _______________.
Antworten
  • GM
  • KM
  • Deck load
  • Maximum allowed KG

Frage 65

Frage
In small angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and though the _____________.
Antworten
  • metacenter
  • center of gravity
  • center of floatation
  • metacentric height

Frage 66

Frage
With regards to metacentric height, which of the following statement is true?
Antworten
  • It is used to indicate the quality of initial stability.
  • It is located below the center of buoyancy.
  • It is measured vertically above the center of buoyancy.
  • Its determination is the objective of the inclining experiment.

Frage 67

Frage
The stability term for the distance between the center of gravity (G) to the Metacenter (M), when small angle stability applies is known as the ________________.
Antworten
  • metacentri height
  • metacentric radius
  • height of the metacenter
  • righting arm

Frage 68

Frage
The value of the maximum righting arm is dependent upon the position of the center of buoyancy and the _____________.
Antworten
  • vertical location of the center of gravity
  • longitudinal center of gravity
  • transverse center of gravity
  • downflooding angle

Frage 69

Frage
The water in which a vessel floats provides vertical upward support. The point through which this support is assumed to act is known as the center of _______________.
Antworten
  • buoyancy
  • effort
  • flotation
  • gravity

Frage 70

Frage
In the absence of external forces, the center of gravity of a floating vessel is located directly above the _______________.
Antworten
  • geometric center of the displaced volume
  • metacenter
  • amidships
  • center of flotation

Frage 71

Frage
Which abbreviation represents the height of the center of buoyancy?
Antworten
  • KB
  • BK
  • CB
  • BM

Frage 72

Frage
The purpose of the vessels “inclining experiment” is to _____________.
Antworten
  • determine the position of the lightship center of gravity
  • determine the location of the metacenter
  • verify the hydrostatic data
  • verify data in the vessel’s operating manual

Frage 73

Frage
Stability is determined principally by the relationship of the center of gravity and the __________.
Antworten
  • center of buoyancy
  • aft perpendicular
  • keel
  • center of flotation

Frage 74

Frage
The inclining experiment conducted on a merchant ship is the method for determining the exact location of the ______________.
Antworten
  • position of the ship’s center of gravity
  • ship’s displacement in seawater
  • position of the ship’s center of buoyancy
  • position of the ship’smetacenter

Frage 75

Frage
Any single ship’s compartment sustaining partial flooding with free communication to the sea will _________.
Antworten
  • seriously decrease stability
  • increase reserve buoyancy
  • decrease the free surface effect
  • result in the ship’s sinking

Frage 76

Frage
Horizontal fore and aft motion of a vessel while underway is called ________.
Antworten
  • surge
  • pitch
  • sway
  • roll

Frage 77

Frage
Rolling is the angular motion of the vessel about what axis?
Antworten
  • Longitudinal
  • Transverse
  • Vertical
  • Centerline

Frage 78

Frage
Vessel bilge keels are designed primarily to __________.
Antworten
  • assist in reducing rolling
  • improve vessel steering response
  • reinforce the bilge knuckle in way of double bottom tanks
  • provide strengthening of the bilge plating through the mid-body

Frage 79

Frage
Pitching is the rising and falling motion of the bow of a ship oscillating about what axis?
Antworten
  • Transverse
  • Longitudinal
  • Vertical
  • Centerline

Frage 80

Frage
A vessel having a concentration of weight toward the top of the vessel is said to be ___________.
Antworten
  • tender
  • stiff
  • stiffbuoyant
  • neutral

Frage 81

Frage
What is the usual effect of moving weight from low in the vessel to above the main deck?
Antworten
  • The stability is decreased.
  • The stability is increased.
  • The draft is increased.
  • The reserve buoyancy is decreased.

Frage 82

Frage
What is the usual effect of moving weight from the main deck to a position lower in the vessel?
Antworten
  • The stability of the vessel is increased.
  • The trim of the vessel is increase.
  • The stability of the vessel is significantly decreased.
  • The vessel will list in proportion to the volume of the cargo shifted.

Frage 83

Frage
You can generally improve the vessel’s stability in a hazardous situation by _________.
Antworten
  • ballasting appropriate port or starboard deep tanks
  • pumping double bottoms to the forepeak
  • transferring ballast athwartships
  • deballasting double bottoms

Frage 84

Frage
Which of the listed conditions will occur to the ship’s center of gravity if 200 tons of steel is transferred to the ship’s cargo from shore side?
Antworten
  • The center of gravity will be lowered.
  • The reserve buoyancy will rise.
  • The center of gravity will remain in the same position.
  • The reserve buoyancy will remain the same.

Frage 85

Frage
If fuel oil is burned from only the starboard tanks, the ship will _________.
Antworten
  • list to port
  • go down by the head
  • list to starboard
  • trim by the stern

Frage 86

Frage
A vessel trimmed down by the bow has ______________.
Antworten
  • a greater draft forward than aft
  • zero trim
  • a low mean draft
  • a greater draft aft than forward

Frage 87

Frage
A stiff wind has caused a difference to occur between the port and starboard drafts. This condition is known as _________.
Antworten
  • heel
  • list
  • trim
  • flotation

Frage 88

Frage
What effect will transferring fuel oil from #1P double bottom to #3P double bottom have on the trim of a vessel?
Antworten
  • The forward draft will decrease.
  • The mean draft will increase.
  • The mean draft will decrease.
  • The after draft will decrease.

Frage 89

Frage
The distance between the bottom of the hull and the waterline is called _______.
Antworten
  • draft
  • tonnage
  • reserve buoyancy
  • freeboard

Frage 90

Frage
For an upright vessel, draft is the vertical distance between the keel and the ____________.
Antworten
  • waterline
  • freeboard deck
  • Plimsoll mark
  • amidships section

Frage 91

Frage
You may improve a vessel’s stability by ______________.
Antworten
  • keeping the fuel tanks topped off
  • increasing the free surface effect
  • keeping the fuel tanks at least half full
  • keeping at least one fuel tank empty for slops

Frage 92

Frage
Reducing the free surface of a liquid within a tank has the effect of lowering the ___________.
Antworten
  • virtual height of the center of gravity
  • uncorrected ‘KG’
  • metacenter
  • metacentric height

Frage 93

Frage
Many uninspected vessels require load lines to indicate the maximum ___________.
Antworten
  • amidship's draft to which a vessel can be lawfully submerged
  • reserve buoyancy under any condition
  • angle of reduced freeboard for subdivision calculations
  • freeboard for the light ship displacement
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