Autumn League 2025 course card, offshore committee boat starts

HYC · https://hyc.ie/system/resources/2329/original/AL_Offshore_Course_Card.pdf · https://hyc.ie/system/resources/2331/original/AL_Course_Card_Technical_Sheet.pdf

Bearings in . Variation 1.3° W at 53° 25.11′ N 006° 03.98′ W on 1 October 2025, from the World Magnetic Model (WMM-2025): magnetic is true plus 1.3°. Bearings are computed from the marks' positions, so are true; magnetic is worked from the unrounded true bearing.

Courses

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35

All marks are rounding marks except those in a box, which are passing marks. Red marks are rounded or passed to port, green to starboard. Select a course to draw it on the chart: its legs are numbered in sailing order, a leg sailed again is drawn beside the first, and a ring shows the side each mark is left on.

Start line

SLStart lineThe starting area will be North of Ireland’s Eye. The starting line shall be between an orange outer distance mark (to be passed to port) and a red/white pole (or mainmast) on the Committee Starting Vessel that will display an orange flag.

HYC Autumn League 2025 sailing instructions 6.1 A and B

Marks

NameShapeColourPosition
AApexconicalblack53° 26.76′ N 006° 03.26′ W
BBalscaddenconicalorange53° 23.30′ N 006° 03.26′ W
CCushconicalblack53° 24.61′ N 006° 05.45′ W
DDunboconicalyellow53° 24.73′ N 006° 03.85′ W
EEastconicalblack53° 26.00′ N 006° 02.20′ W
FFinishcylindricalorangeBetween Island Mark and Howth Sound
GGarbhconicalblack53° 25.00′ N 006° 02.32′ W
HHubconicalblack53° 25.71′ N 006° 04.43′ W
IIslandconicalblack53° 24.70′ N 006° 04.36′ W
JThullaconicalblack53° 23.80′ N 006° 03.40′ W
KStackconicalblack53° 24.60′ N 006° 03.11′ W
MMalahideinflatableyellow53° 27.23′ N 006° 05.59′ W
OOspreyconicalorange53° 25.41′ N 006° 03.52′ W
PPortmarnockconicalblack53° 25.63′ N 006° 05.80′ W
QRowan Rocksialablack53° 23.88′ N 006° 03.22′ W
RSouth Rowanialagreen53° 23.78′ N 006° 03.88′ W
SSpitconicalblack53° 24.35′ N 006° 04.48′ W
TTalbotinflatableyellow53° 27.31′ N 006° 01.30′ W
UUlyssesconicalorange53° 26.22′ N 006° 04.97′ W
VViceroyconicalorange53° 25.12′ N 006° 04.78′ W
WWestconicalblack53° 24.96′ N 006° 06.07′ W
XXebecbarrelblack53° 24.12′ N 006° 04.33′ W
ZZephyrinflatableblackUpwind of Start Line

Positions. Racing Marks (Approx)

Bearings between marks (° magnetictrue)

from \ toABCDEGHIJKMOPQRSTUVWX
A181180213211191190142140164162215214199198183182179178290289188187235233181180188187198197066065243242210209224223195194
B001000316315347346014013020018345344336335352351005004342341357356328327004002324322327325018016342341335334316315323322
C033031136135084083056054079078030029083082125124092090359358056055350348120119133132116114044042011010039038315313128126
D011010167166264263039038075073342341266264165164108106339337017016309308157156182181226225032030337336306305281280206205
E322320194193236234219218185184259258226225199198202201303301234233262260197196206204221219024022279278242240247246215214
G344342200198260258255254005004301299257256210208231230320319301300288287207206219217245243016015309308276275270269235234
H035034165164210209162161079078121119179178163162146145337336120119266264160158172170183181051049329328201199234233179178
I019018156155263262086084046045077076359358149148099098345344036035319317142140164163193192036035348347331329286284180178
J003002172171305304345344019018030028343342329328013012340339359357323322055053267266312311021020340339329328307306301300
K359358185184272270288286022021051050326325279278193192332331345343304303187185211209254253023022327326299298283282238237
M110109162161179178159157123121140139157156165164160159152151147146186184158157165164168167089088161160168167188187168166
O008007177176236235197196054053121120300299216215179177165163327326281279175173189188210208036035314313250249255254202201
P055053148147170168129128081080108107086084139137143142124123006004100099140139150148150148059058041040131130195194151150
Q001000184182300299337336017016027026340338322320235233007005338337355353320319257256303302020018337336324323304302291290
R008007144142313312002001026024039037352350344343087086031029345344009007330328077076329328025024346345339338313312323322
S018017147145296294046045041039064063003001013012132130074073348347030028330328123122149148034033352351348347304303160159
T246245198196224223212211204202196195231229216215201200203202270268216215239238200198205204214213245244225223232230211210
U063062162161191190157156099098129128149148168167160159147146341340134133221220157156166165172171065063175174209207171170
V030029155154219218126125061060096095021019151149149148119118348347070069311310144143159158168167045043355354260258166165
W044043136135135133101100067066090089054052106104127126103102008007075073015014124122133132124123052050029027080078130129
X015014143142308306026025035034055054359358000358121120058057348346022021331330111110143142340339031029351350346345310309

Distances between marks (NM)

from \ toABCDEGHIJKMOPQRSTUVWX
A3.462.522.060.991.851.262.162.962.161.471.361.892.883.002.521.291.151.872.462.72
B3.461.851.472.771.792.511.550.511.304.172.122.780.580.611.284.183.092.032.361.04
C2.521.850.962.391.911.260.661.471.402.621.401.041.521.250.633.661.640.650.510.83
D2.061.470.961.610.951.040.310.970.462.710.711.470.930.950.533.001.630.681.340.67
E0.992.772.391.611.001.361.832.311.502.370.982.182.212.442.141.421.671.772.532.27
G1.851.791.910.951.001.441.251.360.622.960.822.171.241.541.442.392.001.472.241.49
H1.262.511.261.041.361.441.012.011.361.670.620.821.971.961.362.460.600.631.231.59
I2.161.550.660.311.831.251.011.070.752.640.871.271.070.960.363.191.560.491.050.58
J2.960.511.470.972.311.362.011.070.823.671.612.320.130.290.853.732.601.561.970.64
K2.161.301.400.461.500.621.360.750.823.020.851.910.720.940.852.921.961.121.800.87
M1.474.172.622.712.372.961.672.643.673.022.201.613.643.602.962.561.082.172.293.20
O1.362.121.400.710.980.820.620.871.610.852.201.381.541.651.212.321.190.811.591.38
P1.892.781.041.472.182.170.821.272.321.911.611.382.332.181.503.170.770.790.691.75
Q2.880.581.520.932.211.241.971.070.130.723.641.542.330.410.893.622.561.552.010.70
R3.000.611.250.952.441.541.960.960.290.943.601.652.180.410.673.852.531.441.760.43
S2.521.280.630.532.141.441.360.360.850.852.961.211.500.890.673.521.890.791.130.25
T1.294.183.663.001.422.392.463.193.732.922.562.323.173.623.853.522.443.023.693.67
U1.153.091.641.631.672.000.601.562.601.961.081.190.772.562.531.892.441.111.422.14
V1.872.030.650.681.771.470.630.491.561.122.170.810.791.551.440.793.021.110.791.04
W2.462.360.511.342.532.241.231.051.971.802.291.590.692.011.761.133.691.420.791.34
X2.721.040.830.672.271.491.590.580.640.873.201.381.750.700.430.253.672.141.041.34

Navigation Marks and Obstructions

The Navigation Marks in and around Howth Sound shall be left as follows:

South Rowan: to be passed to the West and South

Rowan Rocks: to be passed to the East and South

Any part of Ireland’s Eye capable of being touched by a boat while racing is designated as an obstruction to sea room. Competitors are reminded of a trawler wreck in Howth Sound, south of the Carrgran Rocks on Ireland’s Eye, which is submerged at most stages of the tide. Boats racing in the vicinity of Baldoyle Spit shall sail North and East of the Spit Mark (S).

Course Selection

1).Courses will be designated by three numeral boards.

2).The first two boards will indicate the beat. ie 07 = 070°

3).The third board indicates the column number across the top of the page.

Therefore Course 073 is the third course in from the left on line 07