field ice †
See 1954 quote.
- 1850  (1851)  Far and near, east, north, and west, the eye met nothing but one uniform glare of dazzling whiteness, proceeding from immense bodies of field ice, broken floes, and bergs.
- 1924  Field ice is almost always to be met in the [Hudson] straits, sometimes loose and easy to force a passage, but often a tight jam. . . .
- 1954  FIELD ICE is a large area of flat ice, the extent of which may not be seen from the masthead.