| 游艇 | yacht |
| 横桅 | yard arm |
| 桁索 | yard rope |
| 吊桁索 | yard sling |
| 桁端辘轳 | yarn tackle |
| 造船编号 | yard number |
| 平摆角 | yawing angle |
| 平摆力偶 | yawing couple |
| 艏摇摆 | yaw heel |
| 偏摇计 | yaw-meter |
| 检疫旗 | yellow flag |
| 黄色合金 | yellow metal |
| 黄松 | yellow pine |
| 降伏点 | yield point |
| 降伏比 | yield ratio |
| 降伏强度 | yield strength |
| 降伏应力 | yield stress |
| 杨氏系数 | Young‘s modulus |
| 星角接法 | Y (= delta) connection |
| 星角起动器 | Y (= delta) starter |