110 Seamanship Flashcards

1
Q

What are the two rules of the road?

A

International - applies to vessels on high seas

Inland - applies to all vessels upon inland waters of US

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2
Q

Boat nomenclature and Terminology: Bow

A

Front Section of a ship

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3
Q

Boat nomenclature and Terminology: Stern

A

The rear part of the ship

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4
Q

Boat nomenclature and Terminology: Port

A

Left Hand side

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5
Q

Boat nomenclature and Terminology: Starboard

A

Right Hand side

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6
Q

Boat nomenclature and Terminology: Amidships

A

At near or towards the center of a vessel

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7
Q

Boat nomenclature and Terminology: Athwarthships

A

from one side to the other of a vessel at right angles to the keel.

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8
Q

Boat nomenclature and Terminology: Fore and Aft

A

Fore - at or towards a ship or boats bow

Aft - at or towards a ship or boats stern

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9
Q

Boat nomenclature and Terminology: Beam and Draft

A

Beam - the width at the widest part of a ship

Draft - the depth of water the ship or boat draws

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10
Q

Describe the required vessel lights and how to correctly interpret them:

  • Masthead Light
  • Sidelight
A

Masthead light - white light with an arc of 225°

Sidelights - green to stbd

              - red port
              - unbroken light over an arc of the horizon of 
               112. 5 °
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11
Q

Describe the required vessel lights and how to correctly interpret them:

  • Stern Light
  • Interpretation
A

Stern light - white light at stern with arc of 135°

Interpretation - Mast and both sidelights are visible you are in a meeting situation.
-mast and one side light visible, overtaking or crossing

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12
Q

Describe the required vessel lights and how to correctly interpret them:

  • Towing Light
  • All-round light
A

Towing Light - Same as the stern light but yellow

All-round Light - Light with an arc of 360°

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13
Q

Describe the vessel lights:

  • Flashing Light
  • Special Flashing Light
A

Flashing - Light flashing at regular intervals at a frequency of 120 flashes or more per minute

Special - flashing yellow, with no less than 180° or more than 225°

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14
Q

Actions for vessels within sight of each other: Overtaking

A

Keep out of way of vessel being overtaken

coming up on another vessel from a direction of more than 22.5°about her beam

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15
Q

Actions for vessels within sight of each other:

  • Head-On
  • Crossing
A

Head On - Alter course Starboard so ships pass each other on the port side

Crossing - A vessel which has the other on her Starboard, shall keep out of the way

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16
Q

Navigational General Definitions:

-Restricted Visibility

A

Restricted Visibility - Any condition low vis Fog, Mist, Rainstorm

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17
Q

Navigational General Definitions:

-Vessel Constrained by Draft

A

Restricts a vessel from deviating the current course she is on

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18
Q

Define Vessel Restricted in Ability to manuever

A

A vessel which is restricted in her ability to maneuver, therefore unable to keep out the way of another vessel

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19
Q

Define the following:

-Vessel not under command

A

Vessel which through some exceptional circumstance is unable to maneuver, therefore unable to keep out of the way of another vessel

20
Q

Define the following:

-Power Driven Vessel

A

Any vessel propelled by machinery

21
Q

Define the following:

-Short and Prolonged Blast

A

Short - about 1 second in duration

Long - from four to six seconds in duration

22
Q

Navigational General Definitions:

  • Bell
  • Gong
A

Bell - Vessels 12 meters or more in length

Gong - Vessels that are 100 meters or more in length

23
Q

Define the following:

  • High Tide

- Low Tide

A

High Tide - The maximum height of the water resulting from rising tide

Low Tide - minimum height of water resulting from outgoing tide

24
Q

Define the following terms:

  • mean High Water

- mean Low Water

A

Mean High - Average height of all high tide water in 19yrs

mean Low - average low tie water height in 19 years

25
Q

Define the following terms:

-Spring Tide

A

When Sun and Moon are in line with the earth - high ties higher, low ties lower

26
Q

Define the following terms:

-Neap Tide

A

Sun and Moon are 90° apart (causing lower than normal high and low tides)

27
Q

Define the following:

-Flood Current

A

When the water is going towards shore

28
Q

Define the following:

-Ebb Current

A

When the water is heading away from shore

29
Q

Define the following terms:

-Slack Water

A

The period of time in which there is little to no current

30
Q

Define the following terms:

-Set

A

Direction which current is flowing

31
Q

Define the following terms:

-Drift

A

Velocity or speed of current

32
Q

Effects of Forces against boat handling:

-Propeller Action

A

drawn from around the blade
-low pressure up front
-high pressure in back
boat moves towards lower pressure

33
Q

Effects of Forces against boat handling:

-Screw Current

A

Water flow through propellers, suction screw then thrust flow much stronger

34
Q

Effects of Forces against boat handling:

-Side Force

A

Right hand screw moves right (Starboard)

Left hand screw moves left (Port)

35
Q

Effects of Forces against boat handling:

-Cavitations

A

Air mixed with water

Fix: slow rpm, to allow air out then gradually increase speed

36
Q

Effects of Forces against boat handling:

-Rudder Actions

A

used to steer a vessel in a desired direction by increasing pressure in one side

37
Q

Effects of Environmental Conditions:

  • Wind
  • Seas
  • Current
A

Wind - any portion above water

Seas- a product of wind acting on surface of water, affect handling

Currents - acts on vessels underwater flow, causes drift over ground

38
Q

Define the following Compass errors: Variation

A

offset from true geographic north to magnetic north

39
Q

Define the following Compass errors: Deviation

A

the amount of deflection caused by vessel and its electronics on or near a compass

40
Q

Compass course on a Chart

A

Place ruler along desired course, walk them to a compass rose to determine:
- magnetic north and true north

41
Q

Navigational Terms:

-A line of position

A

Visual range or line determined using an object located in front of you

42
Q

Navigational Terms:

-Dead Reckoning

A

determine approximate position by applying speed, time, and course from last know position

43
Q

Navigational Terms:

-Compass Bearing

A

a direction expressed in degrees from a reference point using a magnetic compass

44
Q

Navigational Terms:

-Relative Bearing

A

direction from the boats bow at 0° measured clockwise thru 360°

45
Q

Navigational Terms:

-Fix

A

Known position