Visual Aids to Navigation How we can use them fully 24/04/2019 Sailcork –navnotes c

Old Head of Kinsale Sailcork – navnotes c 24/04/2019

Fastnet Rock Sailcork – navnotes c 24/04/2019

Roche’s Point Sailcork – navnotes c 24/04/2019

Nominal Range 4 flashes Every 15 seconds 37 metres above MHWS Range of 28 M Sailcork – navnotes c 24/04/2019

Light Characteristics Oc Occulting – more light than dark Fl Single flashing Fl(3) Group flashing F Fixed-on always Iso –Isophase –equal light and dark Sailcork – navnotes c 24/04/2019

Lizard Point Sailcork – navnotes c 24/04/2019

Lizard – Navigators view Sailcork – navnotes c 24/04/2019

Sectored Light White and Red fl White 18 M Red 14 M Shows areas to be avoided in red sector Sailcork – navnotes c 24/04/2019

Leading Lights Lights should be lined up (kept in transit) May be day marks also In this case they will be in line if we head 038 T Sailcork – navnotes c 24/04/2019

Directional Lights Stay in white sector to remain in channel See white and green alternatively and remain on stb side of channel Sailcork – navnotes c 24/04/2019

Visual aids to nav - buoyage Sailcork – navnotes c 24/04/2019

International Association of Lighthouse Authorities- IALA 1970 –92 different buoyage systems Now – Region A and B A – red to port Sailcork – navnotes c 24/04/2019

Lateral Marks Red can to port – red light Green cone to starboard- green light If striped it means “preferred” channel Sailcork – navnotes c 24/04/2019

Lateral buoys Main channel on the straboard fork “Preferred” channel to port Secondary channel on port fork Sailcork – navnotes c 24/04/2019

Lateral buoys on coast Direction of buoyage for Ireland and UK Usually in direction for flood tide Red to port going east from Cork Sailcork – navnotes c 24/04/2019

Cardinal Marks-North Lies to the north of a danger Cones point “up” north Black on top – yellow on bottom Continious flashing white Sailcork – navnotes c 24/04/2019

Cardinal Marks - South Lies to south of danger Cones point “down south” Black on bottom 6 quick white + 1 lfl Sailcork – navnotes c 24/04/2019

Cardinal Marks - East Lies to east of danger Diamonds come from the east Black on top and at bottom 3 flashes Sailcork – navnotes c 24/04/2019

Cardinal Marks - West Lies to West of danger W for West and W fro wineglass Black in middle 9 flashes Sailcork – navnotes c 24/04/2019

Cardinal Marks Sailcork – navnotes c 24/04/2019

Isolated Danger On top of danger Red and black Two black spheres Two white flashes Sailcork – navnotes c 24/04/2019

Safe Water Mark Harbour entrance Fairway bouy Red and white One sphere One flash Cork Bouy Sailcork – navnotes c 24/04/2019

Special Marks Marks- swimming area, mooring, fish farm, sewer Yellow with X on top Yellow light Sailcork – navnotes c 24/04/2019

Emergency Wreck Marking Buoy Maintained in position only until appropriate Lateral or Cardinal buoys can be deployed. Blue and yellow fl light Sailcork – navnotes c 24/04/2019

Other Marks Isolated Danger Safe Water Special Wreck Sailcork – navnotes c 24/04/2019

Lateral and IALA buoys Sailcork – navnotes c 24/04/2019

Lateral + IALA buoys Sailcork – navnotes c 24/04/2019