343. Principal exceptions relieving the charterer; in general.

The principal exceptions1 which are inserted for the special protection of the charterer are:

  1.  

    (1)     strikes and lock-outs2;

  2.  

    (2)     riots and civil commotions3;

  3.  

    (3)     accidents beyond the charterer's control4; and

  4.  

    (4)     ice, frost, fog and storm5.

A negligence clause is sometimes inserted exempting the charterer from responsibility for any negligence, default or error in judgment of trimmers or stevedores employed in loading or discharging the cargo