{
  "formatVersion": 2,
  "club": "RCYC",
  "name": "Keelboat racing marks 2026: the Port of Cork laid race marks the Autumn League Sailing Instructions position, and East Mark the General Sailing Instructions do, the harbour navigation buoys from eOceanic's list and local knowledge, Cage as the club gave it, and every other mark the course card names",
  "source": "https://www.royalcork.com/wp-content/uploads/2026/09/Royal-Cork-Yacht-Club-Keelboat-Autumn-League-2026-Sailing-Instructions-Final.pdf",
  "notes": [
    {
      "title": "Positions",
      "text": "Port of Cork Laid Race Marks are yellow permanently laid and may be in these approximate locations."
    }
  ],
  "marks": [
    {
      "id": "Harp",
      "name": "Harp",
      "shape": "conical",
      "color": "yellow",
      "position": {
        "lat": 51.786667,
        "lng": -8.238
      }
    },
    {
      "id": "Ringabella",
      "name": "Ringabella",
      "shape": "conical",
      "color": "yellow",
      "position": {
        "lat": 51.773167,
        "lng": -8.296333
      }
    },
    {
      "id": "Dosco",
      "name": "Dosco (Corkbeg)",
      "shape": "conical",
      "color": "yellow",
      "position": {
        "lat": 51.820833,
        "lng": -8.263833
      }
    },
    {
      "id": "East Mark",
      "name": "East Mark (Formerly Mark B)",
      "shape": "conical",
      "color": "yellow",
      "position": {
        "lat": 51.771833,
        "lng": -8.236333
      },
      "source": "General Sailing Instructions for Royal Cork Yacht Club Keelboat Racing 2026, 22.3"
    },
    {
      "id": "No.3",
      "name": "Harbour navigation buoy No.3",
      "position": {
        "lat": 51.802167,
        "lng": -8.26025
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “White Bay No.3.”"
    },
    {
      "id": "No.5",
      "name": "Harbour navigation buoy No.5",
      "position": {
        "lat": 51.8171,
        "lng": -8.270083
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour Dogsnose bank No.5”"
    },
    {
      "id": "No.6",
      "name": "Harbour navigation buoy No.6",
      "position": {
        "lat": 51.805533,
        "lng": -8.265367
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour Ramshead Bank No.6.”"
    },
    {
      "id": "No.7",
      "name": "Harbour navigation buoy No.7",
      "position": {
        "lat": 51.827067,
        "lng": -8.26755
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour Corkbeg No.7”"
    },
    {
      "id": "No.8",
      "name": "Harbour navigation buoy No.8",
      "position": {
        "lat": 51.821167,
        "lng": -8.277183
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour Curlane bank No.8”"
    },
    {
      "id": "No.9",
      "name": "Harbour navigation buoy No.9",
      "position": {
        "lat": 51.837783,
        "lng": -8.257617
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork Harbour east channel No.9”"
    },
    {
      "id": "No.10",
      "name": "Harbour navigation buoy No.10",
      "position": {
        "lat": 51.829383,
        "lng": -8.275317
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour Curlane bank No.10”"
    },
    {
      "id": "No.11",
      "name": "Harbour navigation buoy No.11",
      "position": {
        "lat": 51.844033,
        "lng": -8.258717
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork harbour fairway No.11”"
    },
    {
      "id": "No.12",
      "name": "Harbour navigation buoy No.12",
      "position": {
        "lat": 51.8327,
        "lng": -8.269667
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Spike Island No.12”"
    },
    {
      "id": "No.13",
      "name": "Harbour navigation buoy No.13",
      "position": {
        "lat": 51.849483,
        "lng": -8.26545
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork harbour fairway No.13”"
    },
    {
      "id": "No.14",
      "name": "Harbour navigation buoy No.14",
      "position": {
        "lat": 51.835417,
        "lng": -8.26735
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Spike Island No.14”"
    },
    {
      "id": "No.16",
      "name": "Harbour navigation buoy No.16",
      "position": {
        "lat": 51.844883,
        "lng": -8.26425
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork harbour fairway No.16”"
    },
    {
      "id": "No.18",
      "name": "Harbour navigation buoy No.18",
      "position": {
        "lat": 51.848767,
        "lng": -8.27155
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork harbour fairway No.18”"
    },
    {
      "id": "No.20",
      "name": "Harbour navigation buoy No.20",
      "position": {
        "lat": 51.847133,
        "lng": -8.288083
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork harbour Cobh Road No.20”"
    },
    {
      "id": "E1",
      "name": "Harbour navigation buoy E1",
      "position": {
        "lat": 51.794517,
        "lng": -8.258917
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Chicargo Knoll E1 Cork Outer Harbour”"
    },
    {
      "id": "E2",
      "name": "Harbour navigation buoy E2",
      "position": {
        "lat": 51.79265,
        "lng": -8.261483
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour rock E2”"
    },
    {
      "id": "E4",
      "name": "Harbour navigation buoy E4",
      "position": {
        "lat": 51.798842,
        "lng": -8.262568
      },
      "source": "Pat Tanner, Cork Harbour workbook v3.19 (github.com/Bateleur88/cork-harbour-orc): a geotagged photograph of the buoy, confirmed within 7 m by Navionics and B&G Vulcan readings, 29 September 2026"
    },
    {
      "id": "W1",
      "name": "Harbour navigation buoy W1",
      "position": {
        "lat": 51.79515,
        "lng": -8.2678
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour W1”"
    },
    {
      "id": "W2",
      "name": "Harbour navigation buoy W2",
      "position": {
        "lat": 51.794867,
        "lng": -8.2723
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour W2”"
    },
    {
      "id": "W4",
      "name": "Harbour navigation buoy W4",
      "position": {
        "lat": 51.800517,
        "lng": -8.26565
      },
      "source": "eOceanic's list of Irish marks (eoceanic.com/weather/ireland, 5 October 2026): “Cork outer harbour W4”"
    },
    {
      "id": "EF2",
      "name": "Harbour navigation buoy EF2",
      "position": {
        "lat": 51.84385,
        "lng": -8.2373
      },
      "source": "Royal Cork Yacht Club correspondence"
    },
    {
      "id": "EF4",
      "name": "EF4, a race mark",
      "position": {
        "lat": 51.845333,
        "lng": -8.245667
      },
      "source": "Pat Tanner, Cork Harbour workbook v3.19 (github.com/Bateleur88/cork-harbour-orc), which cites an RCYC reference it does not name"
    },
    {
      "id": "Cage",
      "name": "Cage (C1)",
      "shape": "conical",
      "color": "green",
      "position": {
        "lat": 51.8139,
        "lng": -8.2828
      },
      "source": "Royal Cork Yacht Club correspondence"
    },
    {
      "id": "Dutchman",
      "name": "Dutchman",
      "placement": "The Dutchman mark will be a ‘laid’ club racing mark positioned approx. 2 cables SE of the Dutchman Rock/Fennels Bay."
    },
    {
      "id": "Curlane",
      "name": "Curlane",
      "placement": "“Curlane” will be a mark laid on the Curlane Bank."
    },
    {
      "id": "White Bay",
      "name": "White Bay",
      "placement": "Named by course 73 only; the card says nothing of where it is beyond its name, White Bay being the bay on the harbour's east shore north of Roches Point."
    }
  ]
}