Bearings in . Variation 1.2° W at 53° 18.63′ N 006° 07.21′ W on 20 June 2026, from the World Magnetic Model (WMM-2025): magnetic is true plus 1.2°. Bearings are computed from the marks' positions, so are true; magnetic is worked from the unrounded true bearing.
Courses
A
1
2
3
4
B
1
2
3
4
C
1
2
3
4
D
1
2
3
4
E
1
2
3
4
F
1
2
3
4
G
1
2
3
4
H
1
2
3
4
J
1
2
3
4
K
1
2
3
4
L
1
2
3
4
M
1
2
3
4
N
1
2
3
4
P
1
2
3
4
Q
1
2
3
4
R
1
2
3
4
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
SL
Start line
The race start line will be approximately North of Dun Laoghaire Harbour.
Dun Laoghaire Combined Clubs regattas 2026 sailing instructions, Addendum A 3.1
Marks
Name
Shape
Colour
Position
Source
A
Salthill
orange
53° 18.36′ N 006° 09.00′ W
B
Saoirse
green
53° 19.02′ N 006° 08.15′ W
C
Seapoint
black
53° 19.48′ N 006° 08.60′ W
D
South Bull
orange
53° 20.00′ N 006° 08.30′ W
E
South Bar
yellow/black
53° 20.22′ N 006° 07.45′ W
F
Bligh
yellow/orange
53° 20.08′ N 006° 06.70′ W
G
New Ross
yellow/blk/wh
53° 19.60′ N 006° 06.30′ W
H
Harbour
yellow
53° 18.74′ N 006° 07.77′ W
J
Asgard
yellow/black
53° 19.11′ N 006° 06.56′ W
K
Boyd
orange
53° 18.85′ N 006° 07.37′ W
L
Merrion
black/yellow
53° 18.88′ N 006° 09.12′ W
M
Middle
yellow
53° 19.55′ N 006° 07.48′ W
N
Molly
yellow/black
53° 18.28′ N 006° 06.28′ W
O
Orange Start
orange
53° 18.38′ N 006° 07.92′ W
P
Poldy
yellow/orange
53° 17.82′ N 006° 05.40′ W
Q
Island
black
53° 17.45′ N 006° 05.58′ W
R
Bulloch
orange
53° 17.28′ N 006° 06.16′ W
S
East
yellow/green
53° 18.16′ N 006° 05.68′ W
T
Battery
green/white
53° 17.52′ N 006° 06.64′ W
V
Pier
orange
53° 18.10′ N 006° 06.84′ W
W
Bay
black
53° 17.73′ N 006° 07.10′ W
X
Turning
yellow nav mk
53° 18.43′ N 006° 08.34′ W
Y
Omega
yellow
53° 17.78′ N 006° 06.23′ W
2
Black Start
53° 18.41′ N 006° 08.07′ W
DBSC Marks 2026, machine-readable list (DBSC_Marks_2026.csv), which the club says is not an official document
3
Green Start
53° 18.42′ N 006° 08.18′ W
DBSC Marks 2026, machine-readable list (DBSC_Marks_2026.csv), which the club says is not an official document
Z
Zebra
53° 18.74′ N 006° 06.16′ W
DBSC Marks 2026, machine-readable list (DBSC_Marks_2026.csv), which the club says is not an official document
Positions. Mark positions may vary slightly. All figures are approximate.
Bearings between marks (° magnetictrue)
from \ to
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
V
W
X
Y
2
3
Z
A
039038
013012
015014
028026
040039
054052
064063
064063
064063
353352
039037
094093
089088
105104
115114
124122
097096
122121
103101
120119
081080
110109
086085
085083
079077
B
219218
331330
356355
020019
040039
063062
142141
086085
111110
258256
038037
125124
169168
127126
137136
147146
121120
150149
141140
155154
192191
138137
176175
183182
104103
C
193192
151150
020019
044043
063062
086085
147146
108107
132131
209207
085084
132131
161160
132131
140138
148146
128127
150149
144143
154153
173172
141140
165163
168167
118117
D
196194
176175
200199
068067
086085
110109
167166
132131
155154
205204
134133
146145
173172
143142
149147
156155
141140
159158
157155
164162
182181
152151
176175
179177
136135
E
208206
200199
224223
248247
109107
133132
189187
156154
179178
218217
183182
161160
190189
154153
159158
167165
154153
171170
171170
176175
198197
165163
193192
195194
154152
F
220219
220219
243242
266265
289287
155154
207206
176175
199198
232230
223221
173172
204203
162161
167166
175173
164162
180179
184182
187186
212211
174173
207206
209208
168166
G
234232
244242
266265
290289
313312
335334
227226
199198
222220
248247
267266
181179
220218
164163
170169
179178
167166
187186
193192
196194
227226
180179
223222
225223
176174
H
244243
322321
327326
347346
009007
027025
047046
064063
066065
281280
013012
119117
195194
124123
136135
148147
116115
152151
140139
160158
229228
137136
210208
218217
091090
J
244243
266265
288287
312311
336334
356355
019018
244243
243242
263261
310309
170169
229228
153152
162161
174173
152151
183182
191189
194193
239237
173172
233232
236234
148147
K
245243
291290
312311
335334
359358
019018
042040
246245
063062
273272
356355
132131
216215
132131
144143
156155
126124
163162
158157
173172
235234
149148
225224
229228
100099
L
173172
078076
029027
025024
038037
051050
068067
101100
083081
093092
057056
111109
126125
117115
125124
133132
110109
134133
121120
135134
135134
124122
128127
131130
096095
M
219217
218217
265264
314313
003002
043041
087086
193192
130129
176175
237236
152151
194193
145144
153152
162161
143142
167166
166165
174173
206205
158157
198197
201200
137136
N
274273
305304
312311
326325
341340
353352
001359
299297
350349
312311
291289
332331
277276
132131
154153
177176
110109
197196
243242
223222
278277
178177
278277
278277
010009
O
269268
349348
341340
353352
010009
024023
040038
015014
049048
036035
306305
014013
097096
112110
125124
137136
101099
139138
115113
144143
282281
122121
291290
284283
072071
P
285284
307306
312311
323322
334333
342341
344343
304303
333332
312311
297296
326324
312311
292290
197196
221220
335334
249248
289288
266265
290289
267265
292290
291290
335334
Q
295294
317316
320318
329328
339338
347346
350349
316315
342341
324323
305304
333332
334333
305304
017016
245244
356355
278276
312311
288287
302301
312310
304303
303302
346345
R
304302
327326
328326
336335
347345
355353
359358
328327
354353
336335
313312
342341
357356
317316
041040
065064
019018
311310
335334
310309
313311
356355
316315
314313
001000
S
277276
301300
308307
321320
334333
344342
347346
296295
332331
306304
291289
323322
290289
281279
155154
176175
199198
223222
266265
244243
281280
222221
281280
281280
335334
T
302301
330329
330329
339338
351350
000359
007006
332331
003002
343342
314313
347346
017016
320318
069068
098096
131130
043042
349348
308307
313312
044043
317316
315314
014013
V
283281
321320
324323
337335
351350
004002
013012
320319
011009
338337
301300
346345
063062
295293
109108
132131
155154
086085
169168
204203
291290
132131
294293
293292
034032
W
300299
335334
334333
344342
356355
007006
016014
340338
014013
353352
315314
354353
043042
324323
086085
108107
130129
064063
128127
024023
315313
086085
321320
318317
030029
X
261260
012011
353352
002001
018017
032031
047046
049048
059057
055054
315314
026025
098097
102101
110109
122121
133131
101100
133132
111110
135133
118117
097096
100098
078077
Y
291289
318317
321320
332331
345343
354353
000359
317316
353352
329328
304303
338337
358357
302301
087085
132130
176175
042041
224223
312311
266265
298297
301300
300299
004002
2
266265
356355
345343
356355
013011
027026
043042
030028
053052
045044
308307
018017
098097
111110
112110
124123
136135
101100
137136
114113
141140
277276
121120
275273
075074
3
265263
003002
348347
359357
015014
029028
045043
038037
056054
049048
311310
021020
098097
104103
111110
123122
134133
101100
135134
113112
138137
280278
120119
095093
076075
Z
259257
284283
298297
316315
334333
348346
356354
271270
328327
280279
276275
317316
190189
252251
155154
166165
181180
155154
194193
214212
210209
258257
184182
255254
256255
Distances between marks (NM)
from \ to
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
V
W
X
Y
2
3
Z
A
0.83
1.15
1.69
2.08
2.20
2.04
0.83
1.64
1.09
0.53
1.50
1.63
0.65
2.22
2.24
2.01
2.00
1.64
1.32
1.30
0.40
1.76
0.56
0.49
1.74
B
0.83
0.53
0.98
1.27
1.37
1.25
0.36
0.95
0.50
0.60
0.66
1.34
0.66
2.04
2.20
2.11
1.71
1.75
1.21
1.44
0.60
1.69
0.61
0.60
1.22
C
1.15
0.53
0.55
1.01
1.28
1.38
0.89
1.27
0.97
0.68
0.67
1.83
1.17
2.53
2.72
2.64
2.19
2.29
1.74
1.97
1.06
2.21
1.12
1.09
1.64
D
1.69
0.98
0.55
0.55
0.96
1.26
1.30
1.37
1.28
1.22
0.67
2.10
1.64
2.79
3.03
3.01
2.42
2.67
2.09
2.38
1.57
2.54
1.60
1.59
1.80
E
2.08
1.27
1.01
0.55
0.47
0.93
1.49
1.23
1.37
1.67
0.67
2.06
1.86
2.70
2.99
3.04
2.32
2.75
2.15
2.50
1.87
2.55
1.85
1.86
1.67
F
2.20
1.37
1.28
0.96
0.47
0.54
1.49
0.97
1.29
1.88
0.71
1.82
1.85
2.39
2.72
2.82
2.02
2.56
1.98
2.36
1.92
2.32
1.86
1.89
1.38
G
2.04
1.25
1.38
1.26
0.93
0.54
1.23
0.51
0.99
1.83
0.71
1.32
1.56
1.86
2.19
2.32
1.49
2.09
1.54
1.93
1.69
1.82
1.59
1.63
0.86
H
0.83
0.36
0.89
1.30
1.49
1.49
1.23
0.81
0.26
0.82
0.83
1.00
0.37
1.69
1.84
1.75
1.38
1.40
0.85
1.09
0.46
1.33
0.37
0.41
0.96
J
1.64
0.95
1.27
1.37
1.23
0.97
0.51
0.81
0.55
1.55
0.70
0.85
1.09
1.47
1.76
1.85
1.09
1.59
1.02
1.42
1.26
1.35
1.14
1.19
0.44
K
1.09
0.50
0.97
1.28
1.37
1.29
0.99
0.26
0.55
1.05
0.70
0.87
0.57
1.57
1.76
1.73
1.22
1.40
0.81
1.13
0.72
1.27
0.60
0.65
0.73
L
0.53
0.60
0.68
1.22
1.67
1.88
1.83
0.82
1.55
1.05
1.19
1.80
0.87
2.46
2.56
2.39
2.18
2.01
1.57
1.67
0.65
2.05
0.79
0.73
1.78
M
1.50
0.66
0.67
0.67
0.67
0.71
0.71
0.83
0.70
0.70
1.19
1.46
1.20
2.13
2.39
2.40
1.76
2.09
1.50
1.84
1.23
1.92
1.19
1.21
1.13
N
1.63
1.34
1.83
2.10
2.06
1.82
1.32
1.00
0.85
0.87
1.80
1.46
0.99
0.70
0.93
1.00
0.38
0.79
0.38
0.74
1.24
0.50
1.08
1.14
0.47
O
0.65
0.66
1.17
1.64
1.86
1.85
1.56
0.37
1.09
0.57
0.87
1.20
0.99
1.61
1.68
1.52
1.36
1.15
0.70
0.81
0.26
1.18
0.09
0.16
1.11
P
2.22
2.04
2.53
2.79
2.70
2.39
1.86
1.69
1.47
1.57
2.46
2.13
0.70
1.61
0.39
0.71
0.38
0.80
0.91
1.02
1.86
0.50
1.70
1.77
1.03
Q
2.24
2.20
2.72
3.03
2.99
2.72
2.19
1.84
1.76
1.76
2.56
2.39
0.93
1.68
0.39
0.39
0.71
0.64
1.00
0.95
1.92
0.51
1.77
1.83
1.34
R
2.01
2.11
2.64
3.01
3.04
2.82
2.32
1.75
1.85
1.73
2.39
2.40
1.00
1.52
0.71
0.39
0.93
0.37
0.92
0.72
1.74
0.50
1.61
1.66
1.46
S
2.00
1.71
2.19
2.42
2.32
2.02
1.49
1.38
1.09
1.22
2.18
1.76
0.38
1.36
0.38
0.71
0.93
0.86
0.70
0.95
1.61
0.50
1.45
1.52
0.65
T
1.64
1.75
2.29
2.67
2.75
2.56
2.09
1.40
1.59
1.40
2.01
2.09
0.79
1.15
0.80
0.64
0.37
0.86
0.59
0.35
1.37
0.36
1.24
1.29
1.25
V
1.32
1.21
1.74
2.09
2.15
1.98
1.54
0.85
1.02
0.81
1.57
1.50
0.38
0.70
0.91
1.00
0.92
0.70
0.59
0.40
0.96
0.49
0.80
0.86
0.76
W
1.30
1.44
1.97
2.38
2.50
2.36
1.93
1.09
1.42
1.13
1.67
1.84
0.74
0.81
1.02
0.95
0.72
0.95
0.35
0.40
1.02
0.52
0.89
0.94
1.16
X
0.40
0.60
1.06
1.57
1.87
1.92
1.69
0.46
1.26
0.72
0.65
1.23
1.24
0.26
1.86
1.92
1.74
1.61
1.37
0.96
1.02
1.42
0.16
0.10
1.34
Y
1.76
1.69
2.21
2.54
2.55
2.32
1.82
1.33
1.35
1.27
2.05
1.92
0.50
1.18
0.50
0.51
0.50
0.50
0.36
0.49
0.52
1.42
1.27
1.33
0.96
2
0.56
0.61
1.12
1.60
1.85
1.86
1.59
0.37
1.14
0.60
0.79
1.19
1.08
0.09
1.70
1.77
1.61
1.45
1.24
0.80
0.89
0.16
1.27
0.07
1.19
3
0.49
0.60
1.09
1.59
1.86
1.89
1.63
0.41
1.19
0.65
0.73
1.21
1.14
0.16
1.77
1.83
1.66
1.52
1.29
0.86
0.94
0.10
1.33
0.07
1.25
Z
1.74
1.22
1.64
1.80
1.67
1.38
0.86
0.96
0.44
0.73
1.78
1.13
0.47
1.11
1.03
1.34
1.46
0.65
1.25
0.76
1.16
1.34
0.96
1.19
1.25
Course sections
A NORTH 000, B NNE 022.5, C E 045, D ENE 066.5, E EAST 090, F ESE 112.5, G SE 135, H SSE 157.5, J SOUTH 180, K SSW 202.5, L SW 225, M WSW 247.5, N WEST 270, P WNW 292.5, Q NW 315, R NNW 337.5
Card notes
PLEASE RETAIN THIS CARD FOR DMYC, NYC, RIYC & RSGYC 2026 REGATTAS
A1. The Course
1.1 The course to be sailed will be signaled by the display of letter(s) and number(s) on the Race Committee Vessel, as defined on the ‘Course Card A’ included in this addendum. The course will be displayed for at least 3 minutes before and at least 1 minute after the start of each class, and may also be announced on VHF radio. This changes RRS 27.1.
1.2 The display of a letter followed by a number (e.g. A1) signals that the course is the corresponding course in Course Card A. The black letters in Course Card A represent marks as shown on the Chart of DBSC Marks in this addendum.
1.3 If there is a number preceding the letter, the course shall be repeated that number of times. For example, the display of 2A3 means that course A3 shall be sailed twice: E C K E C K.
1.4 The display of two letters and two numbers (e.g. A3B4) signals that the course is a combination of those two courses (in the example, A3 followed by B4, or E C K F K).
1.5 For Cruisers 4 and 5, two numbers may follow the course letter (e.g. A23). In that case, Cruisers 4A and 5A shall sail the course designated by the first number (in the example, A2) and Cruisers 4B and 5B shall sail the course designated by the second number (in the example, A3). If there is a number preceding the letter, the designated course shall be repeated that number of times, as above.
1.6 All marks shall be rounded to port in the order listed.
A2. Marks
2.1 Marks of the course will be DBSC racing marks in Dublin Bay, in the approximate positions shown in the Chart of DBSC Marks and the DBSC Marks, Bearing and Distance Table included in this addendum.
A3. Starting & Finishing Lines
3.1 The race start line will be approximately North of Dun Laoghaire Harbour.
3.2 The race finish line shall be approximately positioned to weather of the last mark of the course (unless shortened).