The present invention relates to increased range antisubmarine mortar projectiles, to being fired from smooth bore barrel, fin (9) equipped with stabilizer (C groups) Yu aerodynamic design, fixed largest outer diameter, equal to the bore (fin) of cylinder hole. It is straight that fin (9), which is in its forward portion, and is bent in rear portion forward direction by angle, is zero greater than/3. In stabilizer body (6), fin (9) the inclined axis that is fit relative to stabilizer and projectile passes through angle, when it is greater than zero, make projectile during being rotated in flight, this causes in the projectile stability and range of enhancing, biggish precision and lesser scattering hit. All fins are similar by their shape, area and size, and are designed to generate in projectile flight minimum resistance. Fin base portion and top design are so that its shape is close in the water droplet of shape.
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