| Term: | Difficult area |
| Definition: | A general expression to indicate that the severity of ice conditions prevailing in an area is such that navigation in it is difficult. |
| Term: | Difficult area |
| Definition: | A general qualitative expression to indicate, in a relative manner, that the severity of ice conditions prevailing in an area is such that navigation in it is difficult. |
| Term: | Difficult area |
| Definition: | Sea ice terminology. A general qualitative expression that indicates that the relative severity of prevailing ice conditions in a particular area are such that navigation will be difficult. |