IALA Region A/B Flashcards
What are the characteristics of a Stbd hand lateral mark in IALA region A?
- Cone, pillar or spar.
- Cone top mark.
- Green mark.
- Leave it to stbd when following direction of buoyage.
- Green light, any rhythm apart from 2+1.
What are the characteristics of a Port hand lateral mark in IALA region A?
- Can, pillar or spar.
- Can top mark.
- Red mark.
- Leave it to port when following direction of buoyage.
- Red light, any rhythm apart from 2+1.
What are the characteristics of a Stbd hand lateral mark in IALA region B?
- Cone, pillar or spar.
- Cone top mark.
- Red mark.
- Leave it to port when following direction of buoyage.
- Red light, any rhythm apart from 2+1.
What are the characteristics of a Port hand lateral mark in IALA region B?
- Can, pillar or spar.
- Can top mark.
- Green mark.
- Leave it to port when following direction of buoyage.
- Green light, any rhythm apart from 2+1.
What are the characteristics of a preferred channel to Stbd mark in IALA region A?
- Cone, pillar or spar.
- Cone top mark.
- Green, red, Green mark.
- Leave it to stbd when following direction of buoyage.
- Green light, rhythm 2+1.
What are the characteristics of a preferred channel to Port mark in IALA region A?
- Cone, pillar or spar.
- Cone top mark.
- Green, red, green mark.
- Leave it to stbd when following direction of buoyage.
- Green light, rhythm 2+1.
What are the characteristics of a preferred channel to Stbd mark in IALA region A?
- Can, pillar or spar.
- Can top mark.
- Red, green, red mark.
- Leave it to port when following direction of buoyage.
- Red light, rhythm 2+1.
What are the characteristics of a preferred channel to port mark in IALA region B?
- Cone, pillar or spar.
- Cone top mark.
- Red, Green, green mark.
- Leave it to stbd when following direction of buoyage.
- Red light, rhythm 2+1.
What are the characteristics of a preferred channel to STBD mark in IALA region B?
- Can, pillar or spar.
- Can top mark.
- Green, red, green mark.
- Leave it to port when following direction of buoyage.
- Green light, rhythm 2+1.
Why do we have Cardinal marks?
To indicate where the mariner can find safe water, they are placed in relation to a danger so that their name indicates the direction in which safe water lies.
What are the characteristics of a North Cardinal mark?
- Pillar or spar.
- Black, yellow mark.
- Two black cones, apex pointing upwards.
- White light, Continuous quick/very quick flashes
What are the characteristics of a South Cardinal mark?
- Pillar or spar.
- Yellow, black mark.
- Two black cones, apex pointing downwards.
- White light, 3 Quick flashes in 10 seconds or 3 very quick flashes in 5 seconds.
What are the characteristics of a East Cardinal mark?
- Pillar or spar.
- Black, yellow, black mark.
- Two black cones, apex pointing away from each other (egg) .
- White light, 6 Quick flashes + 1 long flash in 15 seconds or 6 very quick flashes + 1long flash in 10 seconds.
What are the characteristics of a West Cardinal mark?
- Pillar or spar.
- Yellow, black, yellow mark.
- Two black cones, apex pointing towards each other (wine glass).
- White light, 9 Quick flashes in 15 seconds or 9 very quick flashes in 10 seconds.
What are the characteristics of a Isolated danger mark?
- Pillar or spar.
- Black, red, black mark (bands).
- Top mark, two black balls in a vertical line.
- White light, group flash 2 (fuck-off).
When are Isolated Danger marks used?
When there is and isolated danger in limited extent, which have navigable water all around them.
What are the characteristics of a Safe Water mark?
- Pillar, spar or spherical.
- red and white striped mark.
- Top mark single red sphere.
- White light Flashing; Morse code A, Isophase, Occulting or long flash every ten seconds.
When are Isolated Safe Water used?
To indicate that there is a navigable water all around a mark, commonly as a landfall buoy, to indicate the best point of passage under a bridge or as a mid-channel mark.
What is occulting?
Light mostly on rather than off (Dark arts).
What is isophase?
Light flashing for equal periods.
When are Special marks used?
To indicate a special area or feature, the nature of which is apparent by referring to a chart:
- ODAS buoys (Automated buoy used for collecting and transmitting meteorological, scientific, and oceanographic data in real time.
- Channel within a channel.
- Recreation areas.
- Cables, pipelines and outfalls.
- Spoil areas.
- Military exercise areas.
What are the characteristics of a Special mark?
- Can, cone, pillar, spar or spherical mark (has to be implemented correctly to the direction of buoyage.
- Yellow mark.
- Yellow ‘X’ top mark (if fitted).
- Yellow light using any rhythm that is not used for white lights. (ODAS = 5 Flashes every 20s)
When are Emergency Wreck Marker Buoys used?
To provide a highly conspicuous AtoN for new wrecks, until they have been:
- Adequately surveyed.
- Adequately Marked.
- Adequately marked.
