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Buoyage and Lights

Buoyage and Lights. IALA SYSTEM OF BUOYAGE IALA – International Association of Lighthouse Authorities. A. A. B. B. A. A. B. In System A the Direction of Buoyage is Red to Port when entering harbour.

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Buoyage and Lights

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  1. Buoyage and Lights Endurance Merchant Navy Volunteer Cadets

  2. IALA SYSTEM OF BUOYAGE IALA – International Association of Lighthouse Authorities A A B B A A B Endurance Merchant Navy Volunteer Cadets

  3. In System A the Direction of Buoyage is Red to Port when entering harbour. When the direction of buoyage is not obvious it is indicated by this symbol on the chart. Round the UK the General Direction of Buoyage runs North up the coasts and East through the Channel Endurance Merchant Navy Volunteer Cadets

  4. Cardinal Buoys North Cardinal West Cardinal East Cardinal Point of Danger South Cardinal Endurance Merchant Navy Volunteer Cadets

  5. North Cardinal What you see How it looks on the chart Light White flashing Top Mark 2 Cones pointing up Endurance Merchant Navy Volunteer Cadets

  6. South Cardinal What you see How it looks on the chart Top Mark 2 Cones pointing down Light White flashing 6 + 1long flash Endurance Merchant Navy Volunteer Cadets

  7. East Cardinal How it looks on the chart What you see Light White flashing 3 Top Mark 2 Cones pointing out Endurance Merchant Navy Volunteer Cadets

  8. West Cardinal What you see How it looks on the chart Light White flashing 9 Top Mark 2 Cones pointing in Endurance Merchant Navy Volunteer Cadets

  9. Lateral Marks Direction of Buoyage Endurance Merchant Navy Volunteer Cadets

  10. Port Hand Lateral Mark What you see How it looks on the chart Light Red flashing any rhythm except 2+1 Top Mark 1 can shape Endurance Merchant Navy Volunteer Cadets

  11. Starboard Hand Lateral Mark What you see How it looks on the chart Light Green flashing any rhythm except 2+1 Top Mark 1 conical shape Endurance Merchant Navy Volunteer Cadets

  12. To Starboard To Port Preferred Channels Light Red 2+1 Light Green 2+1 Endurance Merchant Navy Volunteer Cadets

  13. Safe Water Marks • The water all around is free from obstruction or shallows • Single red sphere topmark • Calm, white light • Vertical stripes – safe! Endurance Merchant Navy Volunteer Cadets

  14. Isolated Danger Marks • Marks an isolated danger, such as an old anchor, a large rock • Water around the mark should be safe, but do not pass too close • 2 black spheres for topmark • White light showing group of 2 flashes • Horizontal stripes – danger! Endurance Merchant Navy Volunteer Cadets

  15. Special Marks • Indicates special area – e.g. wreck, sewage pipe • Mark is yellow in colour • Single yellow cross topmark • Light is yellow, any rhythm other than those used for cardinal, isolated danger or safe water marks Endurance Merchant Navy Volunteer Cadets

  16. Safe Water Mark What you see How it looks on the chart Light White Long Flash Morse A Occulting Isophase Top Mark 1 Red Ball Endurance Merchant Navy Volunteer Cadets

  17. Isolated Danger Mark What you see How it looks on the chart Light White flashing 2 Top Mark 2 Black Balls Endurance Merchant Navy Volunteer Cadets

  18. Special Mark What you see How it looks on the chart Light Yellow flashing Any rhythm Top Mark 1 Yellow Cross Endurance Merchant Navy Volunteer Cadets

  19. How it looks on the chart What you would see BuY Emergency Wreck Marker Top Mark 1 Yellow Vertical Cross Light – Alternating Blue and Yellow Endurance Merchant Navy Volunteer Cadets

  20. Abbreviations for lights to be found on charts. When lights are notated on the chart if no colour is indicated the light is white. Coloured lights are indicated by the initial letter of their colour following the abbreviation for the type of light. E.g. F.R means fixed red. R – Red G – Green Y – Yellow B - Blue Endurance Merchant Navy Volunteer Cadets

  21. Abbreviations for lights in use on charts All examples are of white lights. F Fixed light, lit all the time. Fl Flashing light, single flash every given number of seconds. E.g. Fl 2s means single flash every 2 seconds Q Continuous quick white flash. VQ – very quick Endurance Merchant Navy Volunteer Cadets

  22. Abbreviations for lights in use on charts L.Fl Long Flash, about 3 times as long as a flash. Again every given number of seconds. E.g. L.Fl 10s means a long flash every 10 seconds. Fl(2) Group flashing, in this instance 2 flashes. Endurance Merchant Navy Volunteer Cadets

  23. Abbreviations for lights in use on charts Iso Isophase means equal periods of light and dark. Occ Occulting means the periods of light are longer than the periods of dark Morse A Flashing the morse signal for the letter “A” Endurance Merchant Navy Volunteer Cadets

  24. Typical lighthouse characteristics Fl.(3)10s 15m 12M White flashing in groups of 3 every 10 seconds. Height of light 15 metres, visible for 12 Miles Endurance Merchant Navy Volunteer Cadets

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