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Maritime Lights & Marks > Buoys & Beacons > Flashcards

Buoys & Beacons Flashcards

1
Q

Name 5 types of Marks

A
  1. Lateral
    2.Cardinal
  2. Isolated Danger
  3. Safe Water
  4. Special
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2
Q

How to ID marks by DAY?

A
  1. Colour
  2. Shape
  3. Top Mark
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3
Q

How to ID marks at NIGHT?

A

1.Colour
2. Rhythm of Light

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4
Q

Name the 4 Lateral Marks

A

1.Port Hand
2. Starboard Hand
3.Preffered Channel to PORT
4.Preffered Channel to STARBOARD

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5
Q

What colour is Port Mark?

A

RED

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6
Q

What colour is Starboard Mark

A

GREEN

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7
Q

What shape is Port Hand Buoy

A

Cylindrical (Can)

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8
Q

What shape is Starboard buoy

A

Conical

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9
Q

What shape is Port hand Top Mark

A

Single Red Cylinder

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10
Q

What shape is Starboard Top Mark

A

Single GREEN cone

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11
Q

What colour is: Preferred Channel to PORT

A

Green with broad RED horizontal band

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12
Q

What colour is Preferred Channel to Starboard

A

Red with broad GREEN band

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13
Q

Name PORT convention sequence

A

Port= Even, 2,4,6,8 etc

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14
Q

Name Starboard convention sequence

A

Starboard = Odd, 1,3,5 etc

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15
Q

How would you pass a Cardinal Quadrant marked N?

A

Named Cardinal Quadrants should be passed to named side (e.g pass North of NORTH MARK)

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16
Q

What are the usage of Cardinal Marks?

A
  1. indicate deepest water on the name side of Mark
  2. Safe side to pass a danger
  3. Draw attention to feature: Bend or Junction etc
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17
Q

What two colours are Cardinal Marks painted

A

Yellow & Black horizontal bands

18
Q

What is flash rate for Very Quick (VQ) light?

A

Either 100 or 120 flash per min

19
Q

What is flash rate for Quick (Q) light?

A

Either 50 or 60 flash per min

20
Q

How many Cardinal Flashes for WEST

A

Either 9 (VQ) or 9 (Q) flashes

21
Q

How many Cardinal Fladhes for SOUTH

A

Either 6 (VQ + L.Fl) or 6 (Q +L.Fl )

22
Q

How many Cardinal Flashes EAST?

A

Either 3 (VQ) or 3 (Q)

23
Q

How many Cardinal Flashes North?

A

Its a CONTINUOUS “very quick” or “quick” flashing light

24
Q

North Cardinal Top Mark Shape

A

2 Black Cones, one above the other pointing upwards
🔺️
🔺️

25
Q

East Cardinal Top Mark Shape

A

2 Black Cones, one above another, one pointing to Sky AND other to Base
🔺️
🔻

26
Q

South Cardinal Top Mark Shape

A

2 Black Cones facing towards base
🔻
🔻

27
Q

West Cardinal Top Mark Shape

A

2 black cones both pointing inwards to each other
🔻
🔺️

28
Q

Define an Isolated Danger Mark

A

A mark which is moored ON or Above an isolated Danger that have navigable water all around

29
Q

What colour is an Isolated Danger Mark

A

Black with 1 or more broad RED horizontal bands

30
Q

What is the Top Mark Shape for Iso Danger

A

2 Black Spheres, one on top of other
⚫️
⚫️

31
Q

What is a SAFE WATER Mark?

A

It indicates that there is navigatable water all around the mark.

32
Q

What shape is a Safe Water Mark

A

Spherical, maybe pillar or Spar with single RED Spherical Top Mark
🔴

33
Q

What colours are a Safe Water Mark

A

Red and White vertical stripes

34
Q

What is a Special Mark

A

It’s used to indicate a special area or feature marked on chart

35
Q

What colour is a Special Mark

A

Yellow

36
Q

What shape is the Top of a Special Mark

A

Single Yellow Cross ✖️

37
Q

What light colour is on a Special Mark

A

Yellow

38
Q

Describe what a Chart Datum is

A

A water level so low that the tide will seldom fall below it.

39
Q

Describe (MHWS) Mean high water springs

A

The average of the levels of each pair of successive high waters, and of each pair of successive low waters during 24hrs

40
Q

Describe a Drying Height

A

It’s the vertical distance of the seabed that is exposed by the tide, above the sea water level at the lowest astronomical tide

Maritime Lights & Marks (1 decks)

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