WesWorld

Manila Times, 31 Dec 23 - Today on the Luzon firing range, a new gun for the Marina de Filipina was tested for the first time.

This gun should become available for use on new ships starting in 1925.


Arsenal de Manila DP-II 130mm(5.1")/50


Caliber = 5.1 inch (13.0 cm)
Shell weight = 70 lbs (32 kg)
Muzzle velocity = 2794 fps (852 m/s)

Relative ballistic performance: 0.90

Muzzle energy = 11.525 megajoules = 4246.9 foot-tons

Relative muzzle energy: 1.00

Barrel length: 50 calibers


Elevation Range Time Velocity Fall Angle

2.5 deg 5200 yards 7.0 sec 1811 fps 3.4 deg
5.0 deg 8400 yards 13.1 sec 1399 fps 7.9 deg
7.5 deg 10700 yards 18.5 sec 1183 fps 13.1 deg
10.0 deg 12500 yards 23.6 sec 1052 fps 18.8 deg
12.5 deg 13900 yards 28.3 sec 973 fps 24.4 deg
15.0 deg 15200 yards 32.7 sec 926 fps 29.7 deg
20.0 deg 17200 yards 41.1 sec 887 fps 39.7 deg
25.0 deg 18700 yards 48.9 sec 888 fps 47.8 deg
30.0 deg 19900 yards 56.2 sec 909 fps 54.3 deg
35.0 deg 20700 yards 63.2 sec 937 fps 59.5 deg
40.0 deg 21100 yards 69.9 sec 969 fps 63.8 deg
45.0 deg 21200 yards 76.2 sec 1000 fps 67.3 deg
50.0 deg 20800 yards 82.1 sec 1030 fps 70.2 deg


Armor Penetration - Vertical Belt Armor

(Relative armor quality, 1.00)

Maximum penetration: 10.40 inches


Elevation Range Belt Deck

2.3 deg 4900 yards 6 in
5.2 deg 8600 yards 4 in
14.8 deg 15100 yards 2 in
16.0 deg 15600 yards ... 1 in
35.4 deg 20700 yards ... 2 in


Maximum range = 21200 yards at 43.2 deg elevation

Maximum altitude = 47100 feet at 80 deg elevation

5.1", actually. Sue me.