The concept is 3S Spiral Slide Long Stay.

By instantly bringing out the line slug after the jerk it jumps in the horizontal direction while spiralling with the clinking in the initial operation slides sideways with an asymmetric shape. Depending on the tidal current and the way the ship flows in the end it slowly falls vertically while rolling or slides backward in the diagonally backward direction and sinks.

"CB MURAMASA 3S" is designed to make this sinking speed very long. In other words it allowed to "appeal while continuing to exist sideways for a long time in a short zone (layer)".

Considering resistance asymmetric one side full flat shape which excluded even the back side eyeball. 

Length: 186mm

Weight: 180g