1.   Avoid strong tides, offshore winds, poor visibility or sailing in the dark.

2.   On the final pitches the topo proves to be hopelessly inaccurate and route-finding difficult in the poor visibility.

3.   Poor visibility made skiing extremely hazardous.

4.   Radio and television commentators suggested it occurred because of poor visibility in the rain and fog along the border.

5.   The conditions were horrible, the visibility poor, but the traffic was light.

6.   The ice and poor visibility caused minor accidents all over the country.

7.   The search for survivors was abandoned because of poor visibility.