10-cm (100-mm) (3.9-Inch) Complete Round (Fixed)12-cm/Short (120-mm) (4.7-Inch) Complete Round (Fixed)
Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition
Chapter 5 - Section 1
NAVY PROJECTILES
10-cm (100-mm) (3.9-Inch) High-Explosive Projectile
Assembled round:
Weight of complete round: 62.75 pounds.
Length of complete round, with type 98 fuze: 46.0 inches.
Projectile:
Weight of filled projectile (without fuze): 28.19 pounds.
Weight of projectile, empty: 25.06 pounds.

Weight stamped on rotating band (sample): 10.880 kg. (varies with individual projecti-les).

Length of projectile (without fuze): 12.63 inches.
Diameter at bourrelet: 3.94 inches (99 mm).
Distance from base to rotating band: 2.69 inches.
Width of rotating band: 1.75 inches.
Radius of ogive: No data.
Filling:
TNT (type 92 explosive): 3.13 pounds.

The charge consists of a single block of explosive cast and sealed in a waxed paper con-tainer, encased in a heavy cotton flannel bag and sealed in the projectile with paraffin.

Fuzing:
Type 98 mechnical time fuze (45 seconds).
Type 88 point detonation fuzes.
Weapon in which used:
Type 98 10 cm/65 dual-purpose gun.
Type 98 10 cm/50 dual-purpose gun.

Figure 381 – 10-cm High-Explosive.

10-cm (100-mm) (3.9-Inch) Complete Round (Fixed)12-cm/Short (120-mm) (4.7-Inch) Complete Round (Fixed)