ice floe

{{Short description|Large pack of floating ice}}

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{{Distinguish|Glacier#Motion{{!}}Ice flow}}

An ice floe ({{IPAc-en|f|l|oʊ}}) is a segment of floating ice defined as a flat piece at least {{convert|20|metres|feet}} across at its widest point, and up to more than {{convert|10|km|miles}} across.{{cite book |last1=Zhang |first1=Qin |last2=Skjetne |first2=Roger |title=Sea Ice Image Processing with MATLAB® |date=2018 |publisher=CRC Press |location=Boca Raton, Fla. |isbn=978-1-138-03266-8 |page=43 |language=en}} Drift ice is a floating field of sea ice composed of several ice floes. They may cause ice jams on freshwater rivers, and in the open ocean may damage the hulls of ships.