
These projectiles are for use in illuminating enemy ships or targets by means of an illuminating element.
The illuminating projectile is a thin case with a very small expelling charge in the front just behind the fuze, and an interior assembly of a star or candle with a parachute and a very lightly held base plug. The explosion of the expelling charge forces out the base and the interior assembly.
The body is painted light blue with two white stars.
No information about functioning.
No information about hazardous components.
Nothing else to see.
OP 1664, Volume 1 - US Explosive Ordnance (1947)