单项选择题 During loading or discharging，where the delay is due to the Shipowner’s fault，or that of his servants or agents acting within their authority，the time actually delayed is to be（）in calculating lay days.

单项选择题 Damage caused by lighting，a storm，or a sudden gust of wind may be within the exception of （）.

单项选择题 By the sole fact of using the Canal Waters，Masters and Owners of vessels（）themselves to accept all the conditions of the present Rules of Navigation.