Downs SC Yardstick Numbers in use April 2011
  RYA 2011 Downs
14 840 824
420 1087 1095
505 902 892
29ER 924 916
49ER 740 714
Aclass 681 649
ALBACORE 1064 1070
B14 874 861
BLAZE 1046 1050
BRITISH MOTH 1164 1180
BUZZ 1003 1003
BYTE 1170 1187
BYTE CII 1140 1154
CADET 1432 1475
CANOE INTERNATIONAL 905 895
CHALLENGER 1174 1191
CHERUB* 941 935
COMET 1179 1196
CONTENDER 993 992
DART16 853 838
DART18 800 780
ENTERPRISE 1117 1128
EUROPE 1143 1157
FINN 1060 1066
FIREBALL 980 978
FIREFLY 1168 1184
GP14 1127 1139
GRADUATE 1160 1176
HERON 1346 1380
HOBIE 16 805 785
HORNET 979 976
ISO 926 918
LARK 1073 1080
LASER 1082 1090
LASER 2000 1090 1099
LASER 3000 1032 1035
LASER 4.7 1175 1192
LASER 4000 911 902
LASER 5000 846 830
LASER EPS 1020 1022
LASER II 1035 1038
LASER PICO RACE 1265 1291
LASER RADIAL 1106 1116
LASER STRATOS 1089 1097
LASER VAGO XD 1064 1070
LASER VORTEX 937 930
LIGHTNING 368 1152 1167
MERLIN-ROCKET * 1006 1006
MIRACLE 1190 1209
MIRROR 1385 1423
MOTH INTERNATIONAL * 650 615
MUSTO SKIFF 860 846
NATIONAL 12* 1087 1095
OK 1109 1119
OPTIMIST 1646 1710
OSPREY 940 934
PHANTOM 1030 1033
RS 100 998 997
RS 200 1057 1062
RS 300 1000 1000
RS 400 949 943
RS 500 972 969
RS 600 920 912
RS 700 858 843
RS 800 822 804
RS FEVA XL 1200 1220
RS TERA SPORT 1459 1504
RS VAREO 1038 1041
SCORPION 1053 1058
SOLO 1155 1170
STREAKER 1162 1178
TASAR 1023 1025
TOPAZ UNO RACE 1218 1239
TOPPER 1297 1326
WANDERER 1140 1154
WAYFARER 1101 1111