Ice skylight

Alternative definitions (2), class: vernacular (0)
Term: Ice skylight
Definition: From the point of view of the submariner, thin places in the ice canopy, usually less than 1 m thick and appearing from below as relatively light translucent patches in dark surroundings. The under-surface of an ice skylight is normally flat. Ice skylights are called large if big enough for a submarine to attempt to surface through them (120 m) or small if not.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary