摘要 |
A tap outlet (18) in a floor (12) of a vessel (10) has a shallow aperture (30) circumscribed by two drip lines (32, 34). The second drip line (34) circumscribes the first drip line (32) and is substantially coplanar with the first drip line. The two drip lines are connected one to the other by an annular hollow surface (38, 40). |