| 摘要 |
<p>A fin assembly (10) including one or more fin boxes (12) adapted to be fixedly mounted in the board of a surfboard, and a fin (11), the fin and the fin box(es) having complementary locating means (30) for locating the fin in any one of a plurality of predetermined fore and aft positions relative to the fin box(es), and securing means (13) adapted to engage with the fin and at least one of the fin boxes to secure the fin in any selected one of the plurality of predetermined positions, the parts being so made and arranged that the angle of attack of the fin can be varied by locating the fin in one of the predetermined fore and aft positions.</p> |
