Bouyage

Question 1

What does IALA stand for?

Answer 1

International Association of Marine AtoN And Lighthouse Authorities

Question 2

Is IALA a for-profit or non-profit organization?

Answer 2

Non-profit

Question 3

In what year was IALA established?

Answer 3

1957

Question 4

Which countries are recognised as IALA A & B regions?

Answer 4

British (rest of the world) excluding (IALA B Regions) :

N+S America
Japan
S. Korea
Philippines

Question 5

What is Virtual AlS AtoN?

Answer 5

No physical structure; exists ONLY through AlS messages transmitted from another location

AlS stands for Automatic Identification System, which is used to enhance maritime safety.

Question 6

What defines a Synthetic AlS AtoN?

Answer 6

Physical aid to navigation structure without AIS transmitter; AlS messages transmitted from a different location

Synthetic AtoN can include buoys or markers that provide visual navigation support.

Question 7

Which publication a) prior to 2006, b) post 2006 could be consulted to find bouyage information?

Answer 7

a) NP 100 (The Mariners Handbook)

b) NP 735 (Admiralty IALA Maritime Bouyage System)

Question 8

Explain:
Occulting
Isophase
Flash

Answer 8

Occulting: Light > Darkness (enlightened)

Isophase: Light = Darkness

Flash: Light < Darkness

Question 9

What (6) special areas or features could Special Marks indicate?

Answer 9

C - Cables / Pipelines
R - Recreational areas
O - ODAS Bouys
F - (Firing) Military Exercise Zones
T - TSS
S - Spoil grounds

Question 10

Define ODAS bouy?

Answer 10

Ocean Data Acquisition System bouy

Question 11

Light sequence of a Special Marker bouy?

Answer 11

Yellow light.

Any sequence - NOT to be mistaken for any white light in the vicinity.

Question 12

EMERGENCY WRECK MARKING BOUY

• Light colour
• Light Sequence (type / interval / morse)
• Range

What if there are numerous bouys placed around a wreck site?

How could the position be more reliable to find?

Answer 12

Colour: Blue and Yellow light

Sequence: Occulting , 1s flash / 0.5s interval , Morse D (— • •)

4M nominal range

Numerous bouys must have light sequences synchronised.

More reliable to find: and / or AIS transponders
(AND = Synthetic AIS AtoN // OR = Virtual AIS AtoN)

Question 13

EMERGENCY WRECK MARKING BOUY

Until when will such a bouy be displayed?

Answer 13

• Promulgated in Nautical Publications
• Fully surveyed (Depth + Position)
• Permanent marking is erected (in the form of cardinal marks / isolated danger mark)

Question 14

EMERGENCY WRECK MARKING BOUY

When and how did this bouy come into existence?

Answer 14

2002 MV Tricolor sunk in Dover, English Channel bringing bouy into existence in 2006.

Question 15

SAFE WATER MARK

What does this bouy indicate?

Answer 15

• (Rule 9) indicates centre of channel
• Best passage under a bridge
• Mid channel / Landfall

Red + White retroreflector tape

Question 16

SAFE WATER MARK

Light characteristics:
(Sequence , colour , morse)

Answer 16

Occulting OR Isophase

White light

Morse A (• —)

Question 17

Retroreflective tape on Isolated Danger Mark?

Answer 17

Blue over Red

Question 18

What is the light characteristics of a Preferred Channel Marking bouy?

Answer 18

Composite group flashing 2+1 - colour of lateral hand (eg. IALA A Stbd = green // IALA B Stbd = Red)

Question 19

With regards to Lateral bouys what remains the same in IALA A + B regions?

Describe a channel in both regions.

Answer 19

Shapes remain consistent, colours switch in the 2 regions.

A:
Port : CAN ~ Red
Stbd : CONE ~ Green

B:
Port : CAN ~ Green
Stbd : CONE ~ Red

Question 20

When siting a flag, which publication could be consulted for more information?

Answer 20

ALRS V. 1 and 5

International Code of Signals

Question 21

Morse:

— • — •

Answer 21

Morse C , Affirmative.

Question 22

Appropriate morse whistle signal for vessel aground?

Answer 22

U : • • —

L : • — • •

Question 23

What is the correlation between top markers and the paint on CARDINAL MARKERS?

Answer 23

The triangles point to the BLACK PAINT.

Eg. West Cardinal : Triangles pointing toward eachother = Black in center ( Y B Y)