The platekeel to be connected firmly with stem and stern frame.
平板龙骨应与艏柱和艉框架牢固地连接。
2
Inspection distance between draught marks and keelplate after marking out.
划线后检查吃水标尺至平板龙骨之间的距离。
3
The wire measure, keel installation, board processing and slipping glue of construction engineering outboard aluminium compound plate curtain are introduced.