Blue scandinavian cross, with a white border, on a red field.
The norvegian national flag looks like the one of Iceland, the order of the colours being inverted.
Roundel, red triangle with a white bordered blue central bar, over a white disc, blue border.
The norvegian roundel uses as a pennant a part on the national flag. This triangle is always pointing backwards.
Low-visibility variant
Blue stripe, with a white border, on a red field.
Part of the norvegian national flag, used as a fin flash, and also sported above and under the wings.