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ESWS > Navigation > Flashcards

Navigation Flashcards

1
Q

What is the barometer?

A

Used to determine air pressure outside

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2
Q

What does the stadimeter measure?

A

Distance of object

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3
Q

What are the heights and range that the stadimeter measure at?

A

Height 50 and 200 Feet

Ranges 200 to 10,000 yards

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4
Q

What does telescopic alidade do?

A

Takes real and true bearing to distant object

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5
Q

What does sextant measure?

A

Measures angles

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6
Q

What does chronometer do?

A

Gives mean solar time

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7
Q

What is dead reckoning?

A

Estimated position based on course and speed

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8
Q

What are the 6 rules of dead reckoning?

A 
Every hour on the hour 
Every speed change 
Every course change 
Every fix 
Every new fix
Every line of position
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9
Q

How does set and drift get its measurement?

A

By current direction and speed

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10
Q

What effects Set and Drift?

A

Wind and current

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11
Q

What is Set?

A

The direction toward which the forces tend to push vessel

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12
Q

What is drift?

A

Velocity of the force in knots

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13
Q

What is variation?

A

The difference between the value of true north and magnetic north

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14
Q

What buoy system does Japan use?

A

IALA B

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15
Q

What side are Red buoys? Port or STBD

A

STBD

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16
Q

What side is green buoys?

A

PORTSIDE

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17
Q

What does SCU stand for?

A

Steering control unit

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18
Q

What does the SCU consist of?

A

Helm
Lee Helm
manual ships whistle button
Manual ship whistle lever above

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19
Q

What is radio channel for bridge to bridge?

A

10,12 and 16

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20
Q

What does Tell Tale Panel control?

A

Underway lights

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21
Q

What color light is Masthead?

A

White

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22
Q

What color lights are on port side

A

Red

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23
Q

What color lights are STBD side?

A

Green

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24
Q

What are the Inport lights?

A 
Aircraft warning(red)
Flagstaff/jackstaff(white)
Anchor(white)
Deck
Waterline security(white)
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25
Q

Light for man overboard?

A

2 red flashing lights

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26
Q

What color light for Not under command? (Loss of steering or propulsion)

A

2 red

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27
Q

What color light for restricted maneuver?

A

Red white Red

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28
Q

What color light is aground?

A

3 red

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29
Q

What day shape is man overboard?

A

Oscar

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30
Q

What day shape is restricted maneuver?

A

Ball, diamond, ball

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31
Q

What day shape is aground?

A

3 black balls

32
Q

What day shape is not under command?

A

2 black balls vertically

33
Q

What day shape is anchored

A

1 black ball

34
Q

What day shape is constrained by draft?

A

1 cylinder

35
Q

How many bells does the president of recognized country get?

A

8

36
Q

How many bells do admirals get?

A

6

37
Q

How many bells do captains and commanders get?

A

4

38
Q

What is plane guard?

A

A ship stationed behind another ship conducting flight ops to pick up man overboard

39
Q

what are the different ways to recover man overboard?

A

Helio
small boat
Shipboard (forecastle)

40
Q

What is hardship aground?

A

Incapable getting underway on own

41
Q

What is soft ship aground?

A

Able to get underway on own

42
Q

What is Advance?

A

Distance gained in the direction of the original course when ship is turning

43
Q

What is transfer?

A

The distance gained at right angles to the original course when the ship is turning.

44
Q

What is pivot point?

A

Point of hull in which ship actually turns

45
Q

What is turning circle?

A

Amount of distance ship travels when changing direction 180 degrees

46
Q

What is true bearing?

A

In relation to North Pole

47
Q

What is relative bearing?

A

Relation to an object based on bow of ship

48
Q

What is DIW?

A

Ship comes to complete stop

49
Q

What are the methods of obtaining ship position?

A

Electronic(triangle) Radar(triangle)
Visual(circle)
Composite, combination of any methods
Celestial

50
Q

How do we drive the ship if we lose both gyros?

Where is it located?

A

Digital fluxgate magnetic compass

Above helm

51
Q

How many sec is prolonged horn blast?

A

4-6 sec

52
Q

How many sec is short blast horn ?

A

1 sec

53
Q

What is drag circle radius?

A

Sum of the distance between the hawsepipe to pelorus stands and the scope Chain let out

54
Q

What is drag circle?

A

A inner circle around the anchor to determine if ships anchor is holding

55
Q

What is swing circle?

A

Outer circle around anchor that represents maximum arc the ship can swing while at anchor

56
Q

How do you get swing circle radius?

A

Sum of the ships length plus the scope of chain let out

57
Q

How you determine scope of chain?

A

By depth of water times by 5-7

58
Q

What is the Psychrometer measure? Explain

A

Atmospheric Humidity

Gives relative humidity and dew point temperature

59
Q

What is Code Alpha?

A

Divers

60
Q

What is bravo flag?

A

Ammo handling/fuel transfer

61
Q

What is November Charlie?

A

SOS

62
Q

What is Delta flag?

A

Degaussing

63
Q

What is foxtrot flag?

A

Fixed wing aircraft operations

64
Q

What is Mike flag?

A

Medical ship

65
Q

What is Oscar flag?

A

Man overboard

66
Q

What is papa flag?

A

Personnel recall

67
Q

What is Quebec flag?

A

Small boat Recall

68
Q

What is Romeo flag

A

Preparing to come alongside (RAS)

69
Q

What is Sierra flag?

A

Flag hoist drills

70
Q

What is uniform flag?

A

Preparing to anchor

71
Q

What is victor flag?

A

Streaming ops (MFTA)

72
Q

What is golf flag?

A

Guide ship

73
Q

What is hotel flag?

A

Helio ops

74
Q

What is hotel 1?

A

Vert rep code

75
Q

What is India flag?

A

Coming alongside Inport

76
Q

What is kilo flag?

A

Man is aloft

77
Q

What is Lima flag?

A

H.E.R.O.

ESWS (15 decks)

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