navigation Flashcards

1
Q
Discuss Inland
vs.
International
Rules of the
Road
A

International Rules - for all vessels on the

HIGH SEAS and in CONNECTING WATERS

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2
Q

WIND on small

boats

A

Boat is moved in the direction of the wind

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3
Q

SEAS

on small boats

A

harder to handle steering

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4
Q

CURRENT on

small boats

A

CAUSES

DRIFT in direction of flow

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5
Q

PROPELLER
ACTION affects
small boat
handling

A

Causes boat to ROTATE and cause

FORWARD THRUST

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6
Q

SCREW
CURRENT
affects small
boat handling

A

PROPELLERS DRAW IN WATER FROM
EVERY DIRECTION AND AROUND THE
BLADES, PROVIDING A FORWARD
THRUST

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7
Q

SIDE FORCE
affects small
boat handling

A

Causes boat to MOVE SIDEWAYS

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8
Q

CAVITATION
affects small
boat handling

A

LOSS of EFFECTIVE THRUST and

propeller EFFICIENCY

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9
Q

RUDDER
ACTION
affects small
boat handling

A

pushes the stern and

bow in OPPOSITE DIRECTIONS

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10
Q

compass
errors:
Variation

A

DIFFERENCE between the value of TRUE

NORTH AND MAGNETIC NORTH.

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11
Q

compass
errors:
Deviation

A

Amount that the compass is deflected from
the MAGNETIC MERIDIAN because of the
effects of the SHIPS IRON.

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12
Q
Describe
procedures to
determine
compass
course on a
chart.
A

compass course. : the course which a ship is

intended to travel

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13
Q

Define how to
determine safe
speed:
State of visibility

A

As visibility decreases, boats speed
should also decrease
Safe Speed- Rule 6

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14
Q

Define how to
determine safe
speed:
Traffic density

A

Alot of traffic density requires slower

speed to avoid collision

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15
Q

determine safe
speed:
Stopping distance
and turning ability

A

Faster speed increase stopping distance
required
Slow speed when making sharp turns so
that you dont overshoot your turn

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16
Q

Define how to
determine safe
speed:
Night

A

Decrease speed at night in order to
readily recognize other vessels and
buoys

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17
Q
Define how to
determine safe
speed:
Wind, sea, and
current
A

Wind, seas, and current increase the sea
state. More RPMS may be required to
fight resistance. More control is required
when mooring

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18
Q
Define how to
determine safe
speed:
Limitations of the
radar equipment
A

Limitations of radar requires slower

speed and lookouts to be more alert

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19
Q
Define how to
determine safe
speed:
Effect on radar
detection of the
sea state, weather
A

Vessel speed should be reduced when
interference caused by sea state of
weather impairs the performance of the
radar

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20
Q
Define how to
determine safe
speed:
Ice and other
floating objects
may not be
detected by radar
A

requires slower speed and lookouts to

be more alert

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21
Q

Define Plan of
Intended
Movement (PIM)

A

The PLANNED ROUTE that a ship is TO

FOLLOW Must be approved by CO.

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22
Q

Define
Line of
Position
(LOP)

A

A line of bearing (direction) to a known object,
which a vessel is presumed to be located on at
some point.

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23
Q

Define
Dead
Reckoning

A

Determination of approx. position by advancing
a previous position for course and distance
only, without regard to other factors, such as,
wind, sea conditions and current

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24
Q

Define
Compass
Bearing

A

direction towards which you are headed, as

shown by a compass

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25
Q

Define
Relative
Bearing

A

Direction from the boat’s bow at 000°, measured

clockwise through 360°

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26
Q

Define Fix

A

A known point on Earth.

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27
Q

Discuss “IALA”

systems A and B

A
International Association of Lighthouse
Authorities
IALA System A: Asia, Africa, Europe
o Green right returning
• IALA Systems B: The Americas, and
Japan.
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28
Q

Discuss the
following element
of a Contact
Report: Bearing

A

Always report contacts in relative
bearings.
Given in 3 digits, spoken digit by digit

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29
Q
Discuss the
following element
of a Contact
Report:
Position Angle
A

Report position angle on all aircraft.
Given in 1 or 2 digits, spoken as whole
number.

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30
Q
Discuss the
following element
of a Contact
Report:
Target Angle
A

Report target angle on all ships.

Given in 3 digits, spoken digit by digit

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31
Q
Discuss the
following element
of a Contact
Report:
Range Estimation
A

horizion is the only readily

available reference point

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32
Q
Discuss the
following element
of a Contact
Report:
Speed Estimation
A

readily visible aid in estimating speed

is a ship’s bow wave and stern wake

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33
Q
Define the
actions to be
taken by the
Give Way and
Stand-on
vessels in a
HEAD ON
situation
A

Head-on Situation - (a) When two vessels
are heading head on towards each other,
should pass port to port

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34
Q
Define the
actions to be
taken by the
Give Way and
Stand-on
vessels in a
CROSSING
situation
A

The vessel which has the other on her own
starboard side shall keep out of the way
and avoid crossing ahead if circumstances
permit.

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35
Q

Define High

Tide

A

MAXIMUM water height resulting from the

RISING tide

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36
Q

Define Low Tide

A

MINIMUM water height resulting from the

OUTGOING tide.

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37
Q

Define Mean

High Water

A

The AVERAGE height of all HIGH-tide
water levels, measured over a 19-year
period

38
Q

Define Mean

Low Water

A

The AVERAGE height of all LOW-tide

levels, observed over a 19-year period

39
Q

Define Spring

Tide

A

Tides that occur when SUN AND MOON

IN LINE WITH EARTH,

40
Q

Define Neap Tide

A

Tides that occur when the SUN AND

MOON ARE 90° apart,

41
Q

Define Flood

Current

A

Horizontal movement of water is

TOWARD SHORE

42
Q

Define Ebb

Current

A

Horizontal movement of water is

AWAY FROM SHORE

43
Q

Define Slack

Water

A

period of time where there is

LITTLE OR NO CURRENT

44
Q

Define Set

A

DIRECTION of the current

45
Q

Define Drift

A

The velocity (speed) of current

46
Q

Describe the
Masthead Light
and how to
interpret it

A

white light 225 degrees
Placed over fore to aft center-line of
vessel

47
Q

Describe the
Sidelights and how
to interpret them

A

Green- starboard
Red- Port
112.5 degrees

48
Q

Describe the Stern
Light and how to
interpret it

A

white light placed as near stern

135 degrees

49
Q

Define
Restricted
visibility

A

any condition in which visibility is restricted
by fog, snow, rainstorms, or other bad
weather

50
Q

Define Vessel
constrained by
draft

A

A vessel who is severely restricted in her
ability to deviate from the course due to
her draft in relation to water depth

51
Q

Define Vessel
restricted in
her ability to
maneuver

A

Restricted in her ability to maneuver DUE

TO THE NATURE OF HER WORK

52
Q

Define Vessel
not under
command

A

A vessel that is UNABLE to maneuver

53
Q

Define Power

driven vessel

A

Any vessel propelled by machinery

54
Q

Define Short
blast and
prolonged
blast

A

SHORT BLAST: about one second in
duration.
PROLONGED BLAST: from four to six
seconds in duration.

55
Q

Define a Bell

A

Used on vessels 12 meters or more in

length

56
Q

Define a Gong

A

Used on vessels 100 meters or more in

length .

57
Q

What is a
SOUNDING on
a nautical chart

A

Measure of charted depth of water.

58
Q

What is a
COMPASS
ROSE on a
nautical chart

A

Compass Rose - Outer circle is true North,
inner circle is magnetic North. The
difference between both is called ANGLE
OF DECLINATION

59
Q

What are
CONTOUR
LINES on a
nautical chart

A

contour lines show the shape of

underwater relief

60
Q

What are Latitude
/ Longitude Lines
on a nautical chart

A
Latitude lines are reference points in a
north and
south direction with the equator as
their zero
reference point
Longitude lines are the east and west
reference
points with the prime meridian as their
zero
reference point
61
Q

Target Angle

A

The relative bearing of your ship from

another ship

62
Q

What does 1 Short

Blasts mean?

A

Inland:
I am altering course to PORT
International:
I am altering course to STBD

63
Q

What does 2 Short

Blasts mean?

A

Inland:
I am altering course to STBD
International:
I am altering course to PORT

64
Q

What does 3 short

blasts mean

A

Astern Propulsion

65
Q

What does 5 short

blasts mean?

A

GENERAL DURESS INCLUDING MAN
OVERBOARD
DANGER

66
Q

How far is a
nautical mile in
yards

A

2000 yards

67
Q

When plotting a
running fix, how
many fixed objects
do you need?

A

One

68
Q

Oscar Flag

A

Man overboard

69
Q

Bravo Flag

A

Ammo, Fuel, or Explosive transfer. Also for

live fire.

70
Q

Code Alpha

Flag

A

Diving Operations

71
Q

International

Dive Flag

A

Diving Operations

72
Q

Quebec Flag

A

Small Boat Recall

73
Q

Hotel Flag

A

Harbor Pilot onboard

74
Q

Foxtrot Flag

A

Fixed Wing Aircraft Operations. Commonly

used on aircraft carriers

75
Q

India Flag

A

Prepared or Intends to receive you

alongside

76
Q

Papa Flag

A

Personnel Recall

77
Q

Uniform Flag

A

You are running into danger

78
Q

Navigation Lights:

Red, White, Red

A

Restricted Ability Ahead

79
Q

Navigation Lights:

Red over Red

A

The Captain Is Dead

Vessel not under command

80
Q

Navigation Lights:
Red over Red over
Red

A

Constrained by draft

81
Q

Navigation Lights:

Red Over White

A

Fishing at night

82
Q

Navigation Lights:

Red Over Green

A

Sailing Machine

83
Q

Navigation Lights:

White Over Red

A

Pilot Ahead

84
Q

Navigation Lights:
Yellow Over
Yellow

A

A pushing or Hip Towing Fellow

85
Q

Navigation Lights:

Yellow over white

A

tug towing astern

86
Q

Navigation Lights:
Green over Green
over Green

A

Mineclearing

87
Q

Navigation Lights:

Green over white

A

Trawling

88
Q

Day shape for a

anchored vessel

A

1 black ball

89
Q

Day shape for a

vessel aground

A

3 vertical black balls

90
Q

Day shape for a vessel not under

command

A

1 vertical black

balls

91
Q

Day shape for a vessel constrained by

her draft

A

1 black cylinder

shape

92
Q

Day shape for a towed vessel and

vessel being towed

A

1 black diamond

on each vessel