Skylight

Alternative definitions (2), class: vernacular (0)
Term: Skylight
Definition: From the point of view of the submariner, thin places in the ice canopy, usually less than 3 ft (1 m) thick and appearing from below as relatively light, translucent patches in dark surroundings. The undersurface of a skylight is normally flat. Skylights are called large if big enough for a submarine to attempt to surface through them, or small if not.  WMOSeaIce 

Sea ice terminology. Describes the thin places in an ice canopy, usually less than 1 meter thick, that appear from below as light, translucent patches in dark surroundings. The under surface of skylights are normally flat. They are termed small or large; if they are big enough for a submarine to attempt to surface through them (120 meters wide or more) they qualify as large.  ECCCanada 

 GCW 
Created 2017.06.06
Last Modified 2022.03.08
Contributed by GCW Glossary
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