| The following abbreviations apply – |
|
| A |
Albacore |
NN1 |
| AB |
Pole AB Class |
B |
| AS |
Asymmetric Class |
A |
| C |
Cadet Class |
Y |
| CL1 |
Cruiser Class 1 |
Pdt 1 |
| CL2 |
Cruiser Class 2 |
Pdt 2 |
| CL3 |
Cruiser Class 3 |
Pdt 3 |
| CL4 |
Cruiser Class 4 |
Pdt4 |
| D |
Dolphin Class |
G |
| DT |
Dart Class |
D |
| E |
Enterprise Class |
E |
| FB |
Fireball Class |
Pdt 8 |
| FF |
Flying Fifteen Class |
NN6 |
| J24 |
J24 Class |
J |
| L |
Laser Class |
W |
| R |
Merlin Rocket Class |
O |
| R2 |
RS 200 Class (DC) |
R |
| RS |
RS 400 Class |
NN2 |
| S |
Shrimper Class |
Q |
| T |
Topper Class |
T |
| W |
Wayfarer Class |
V |
| X |
X One Design Class |
NN5 |
| 4.7 |
Laser 4.7 Class |
Pdt7 |
| 420 |
420 Class (YDC) |
K |
Class flags will be used as Warning signals unless the Sailing Instructions advise otherwise e.g. For combined class starts. |