Definitions:I = Height of headstay termination above the sheer line.
J = Distance between the headstay termination at the deck and the front of the mast at the sheer line.
P = Distance between black bands on the mast, or the maximum luff length of the main.
E = Distance between black bands on the boom, or the maximum foot length of the main.
JSP is the length of the spinnaker pole or the distance from the forward end of the bowsprit (fully extended) to the front face of the mast.
ISP is measured form the highest spinnaker halyard to the deck.
PY & EY are similar to P & E, but indicate mizzen dimensions.
| TYPE/CLASS | I | J | P | E | DSPL |
|---|---|---|---|---|---|
| YAMAHA 21 | 24.5 | 7.8 | 24.3 | 8.2 | |
| YAMAHA 24 | 25.5 | 7.9 | 21.3 | 9.5 | 3638 |
| YAMAHA 25-2 | 32.8 | 9.8 | 29.9 | 9.2 | 3749 |
| YAMAHA 26 | 30.4 | 8.6 | 32.1 | 11.8 | |
| YAMAHA 29 | |||||
| YAMAHA 30-1 | 37.8 | 12.1 | 32.9 | 9.9 | 7599 |
| YAMAHA 30-2 | 40.7 | 12.1 | 35.4 | 10.5 | 7599 |
| YAMAHA 33 | 45 | 13.8 | 39.7 | 11.3 | 9700 |
| YAMAHA 33 SM | 42.8 | 13.8 | 37.4 | 11.7 | 9700 |
| YAMAHA 35 | 39 | 14.9 | 32.8 | 11 | 13500 |
| YAMAHA 36 | 49.9 | 15.1 | 44 | 12.1 | 12566 |
| YAMAHA 37 | 49.8 | 15 | 44 | 12.8 | 14300 |
| YANKEE 24 DOLPHIN | 30 | 9 | 26.8 | 11.8 | 4250 |
| YANKEE 24 DOLPHIN IB | 30 | 9 | 26.8 | 11.8 | |
| YANKEE 24 SEAHORSE | 28.5 | 10 | 24 | 9 | 2900 |
| YANKEE 26 | 33.5 | 10.3 | 28.3 | 9 | 5335 |
| YANKEE 28 | 36 | 11.8 | 30.8 | 10 | 6500 |
| YANKEE 30-1 | 38.5 | 12.8 | 33.2 | 11.5 | 8700 |
| YANKEE 30-1 SM | 8700 | ||||
| YANKEE 30-2 1-97 | 40 | 12.8 | 34.9 | 10 | 8700 |
| YANKEE 30-2 98+ | 40 | 12.8 | 34.9 | 10 | 8700 |
| YANKEE 30-3 | 42.5 | 12.8 | 37.4 | 11.3 | 10000 |
| YANKEE 38 | 48.5 | 15.7 | 42.8 | 12 | 16000 |
| YANKEE CLIPPER | 49 | 14.5 | 43 | 15 | 10500 |
| YANKEE ONE DESIGN | 28.5 | 7 | 33.2 | 13.5 | 4775 |
| YINGLING ODR | 19 | 6.56 | 22.31 | 8.53 | 1320 |
| YORK HARBOR 36/38 | 50 | 14.75 | 44 | 14 | 18000 |
| YORKTOWN 33 | |||||
| YORKTOWN 35 | |||||
| YORKTOWN 39 | |||||
| YORKTOWN 41 | |||||
| YOUNG 10-34 | 41.54 | 12.75 | 42.88 | 16.13 | 7100 |
| YOUNG 12M | 48.5 | 15.8 | 53.7 | 18.9 | 11010 |
| YOUNG 8.8 | 34.67 | 10.42 | 37 | 11 | 5800 |