For ships over 65 m in length, holes are to be drilled in the bilge keel butt welds. The size and position of these holes are to be as illustrated in Fig. 10.5.5. Where the butt weld has been subject to non-destructive examination the stop hole may be omitted.
翻译翻译,嘿嘿,对于超过65m船长的船,在舭龙骨的对接缝上需要开孔,开孔形式及位置在图例10.5.5注解。如果舭龙骨对接缝的NDT能够合格的话,止裂孔可以省略。。。