
Practice Bomb Marker Mk 17 Mod 0 is used in target practice to produce a deep red color at the point where the weapon enters the water. The marker, about four inches long and four inches in diameter, consists of a plastic housing screwed to an aluminum base. A single lockwire is used between the housing and base to prevent the housing from loosening. The housing is filled with a dark green dye which is sealed against moisture by an O-ring between the housing and the base. The housing breaks open when a bomb strikes the water releasing the dye. A chemical reaction between the dye and water causes the dye to turn red.
The marker is secured to the nose of the practice bomb by means of a threaded boss on the underside of the base. It replaces the eyebolt and is tightened to the nose section by use of a special wrench. The wrench fits into three of the six notches cut around the periphery of the base.
No information about functioning.
No information about hazardous components.
Nothing else to see.
OP 2216, Volume 1 - Aircraft Bombs, Fuzes, and Associated Components (1960)