1851  A patch is a collection of drift or bay-ice, of a circular or polygonal form. In point of magnitude, a pack corresponds with a field, and a patch with a floe.
1852  There was a patch of ice between us and the island, which probably may have assisted to increase the refraction in that direction, although it was exceedingly powerful in every other direction.
1878  Other reports state that a portion of the fleet . . . tried their fortunes in search of a more northerly patch than the Falcon and Arctic fell in with.
1916  Next day Cap'n Saul found the herds--a patch of harps and new-whelped young.
1933  CUT. the course selected by each Captain, as the best or shortest ice passage to the Patch.
1958  Captain Jackman had struck his patch, killed his load, and left another half a load on the ice. . . .