Difference between revisions of "152/53 mm O.T.O. Mod.1929 (152 mm)"

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! colspan="2" | Elevator
 
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| [[RN Raimondo Montecuccoli]] || 70 || {{Annotation|RHA|Rolled homogeneous armour}} || 22 || RHA || 30 || RHA || 50-30 || RHA
 
| [[RN Raimondo Montecuccoli]] || 70 || {{Annotation|RHA|Rolled homogeneous armour}} || 22 || RHA || 30 || RHA || 50-30 || RHA
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| [[15 cm/50 Type 41 (152 mm)|15 cm/50 Type 41]]
 
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| [[15 cm/50 Type 41 (152 mm)|15 cm/50 Type 41]]
 
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|| SAP || 152 || 850 || 6.2 || 10 || 6 || 2.92 || 52 || 34  
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|| SAP || 152 || 850 || 6.2 || 10 || 6 || 2.92 || 52 || 34
 
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Revision as of 14:55, 3 May 2023

152/53 mm O.T.O. Mod.1929 turrets number 1 and 2 on the RN Raimondo Montecuccoli

Description

The 152/53 mm O.T.O. Mod.1929 is an Italian naval cannon.

Vehicles equipped with this weapon

General info

The gun comes in two distinct turret designs, both twin-mount, with the earlier design having enough protection to deflect shells from the 4-inch guns at 5,000 m, while the later design increases that protection up to 5-inch, or 127 mm guns at 5,000 m, which is sufficient to deflect a direct hit into the turret face form nearly every destroyer and most of cruisers in a real combat situations.

Ship Front Sides Top Elevator
Thickness (mm) type (mm) type (mm) type (mm) type
RN Raimondo Montecuccoli 70 RHA 22 RHA 30 RHA 50-30 RHA
RN Eugenio di Savoia, Kerch 90 RHA 30 RHA 30 RHA 70-50 RHA

Available ammunition

Penetration statistics
Ammunition Type of
warhead 		Penetration @ 0° Angle of Attack (mm)
1,000 m 2,500 m 5,000 m 7,500 m 10,000 m 15,000 m
HE Dirompente HE 29 29 29 29 29 29
HE-TF Contro-aerea HE-TF 29 29 29 29 29 29
APHEBC Palla APHEBC 277 229 168 125 95 70
Shell details
Ammunition Type of
warhead 		Velocity
(m/s) 		Projectile
mass (kg) 		Fuse delay
(s) 		Fuse sensitivity
(mm) 		Explosive mass
(TNT equivalent) (g) 		Ricochet
0% 50% 100%
HE Dirompente HE 935 44.57 0 0.1 2,390 79° 80° 81°
HE-TF Contro-aerea HE-TF 935 44.57 0 0.1 2,390 79° 80° 81°
APHEBC Palla APHEBC 900 47.5 0.03 7 800 48° 63° 71°

Comparison with analogues

The primary distinguishing feature of the shells utilized by the OTO's 152/53 mm is their notably small explosive content. This attribute, in combination with an average rate of fire, results in a comparatively lowest potential damage output per minute when compared to similar munitions. HE shells contain an explosive filler that is smaller in size than many SAP shells, yet they lack the penetrating power of the latter. Conversely, the APHEBC shells, despite having the smallest explosive component of any comparable armor-penetrating munition, has only average penetration, making it an overall subpar performer.

The gun possesses two noteworthy advantages. First, its muzzle velocity is among the highest among peers, which, in combination with an above-average rate of fire, makes it relatively straightforward to engage enemy vessels at a distance.

HE

Cannon Sample Ship Ammo Calibre
(mm) 		Muzzle Velocity
(m/s) 		Sustained rate of fire
(rounds/min) 		Targeting speed
(°/s) 		TNT Equivalent
(kg) 		Penetration
@ 0° Angle of Attack (mm)
Horizontal Vertical 5,000 m 10,000 m
Kingdom Italy flag.png 152/53 mm O.T.O. Mod.1929 RN Eugenio di Savoia HE 152 935 8 6 5 2.39 29 29
USA flag.png 6 inch/47 Mk.16 (152 mm) USS Helena HE 152 812 10 4.2 8.5 5.88 49 49
USA flag.png 6 inch/53 Mk.12 (152 mm) USS Trenton HE 152 914 6 5.1 4.2 5.88 49 49
Germany flag.png 150 mm/45 SK L/45 SMS Elbing HE 150 835 7 4.2 4.2 1.6 21 21
Germany flag.png 15 cm/48 KC/36 Z32 HE 150 835 7 8.5 6.8 3.91 37 37
Germany flag.png 15 cm/60 SK C/25 Nürnberg HE 150 960 12 6.8 5.1 3.91 37 37
USSR flag.png 152 mm/57 B-38 Chapayev HE 152 950 7.5 6.1 11 6 50 50
Britain flag.png 6 inch/50 BL Mark XXIII (152 mm) HMS Arethusa HE 152 841 8 6 8.5 3.96 37 37
Japan flag.png 15 cm/50 Type 41 IJN Agano HE 152 850 6.2 10 6 3.17 35 35

SAP / AP

Cannon Sample Ship Ammo Calibre
(mm) 		Muzzle Velocity
(m/s) 		Sustained rate of fire
(rounds/min) 		Targeting speed
(°/s) 		TNT Equivalent
(kg) 		Penetration
@ 0° Angle of Attack (mm)
Horizontal Vertical 5,000 m 10,000 m
Kingdom Italy flag.png 152/53 mm O.T.O. Mod.1929 RN Eugenio di Savoia APHEBC 152 900 8 6 5 0.8 168 95
USA flag.png 6 inch/47 Mk.16 (152 mm) USS Helena APCBC 152 762 10 4.2 8.5 0.9 182 120
USA flag.png 6 inch/53 Mk.12 (152 mm) USS Trenton SP Common 152 914 6 5.1 4.2 0.977 138 85
Germany flag.png 150 mm/45 SK L/45 SMS Elbing SAPBC 150 835 7 4.2 4.2 1.05 61 37
Germany flag.png 150 mm/45 SK L/45 SMS Elbing APCBC 150 835 7 4.2 4.2 0.99 153 93
Germany flag.png 15 cm/48 KC/36 Z32 SAPBC 150 835 7 8.5 6.8 3.32 74 45
Germany flag.png 15 cm/48 KC/36 Z32 APCBC 150 835 7 8.5 6.8 1.32 147 90
Germany flag.png 15 cm/60 SK C/25 Nürnberg SAPBC 150 835 12 6.8 5.1 3.32 74 45
Germany flag.png 15 cm/60 SK C/25 Nürnberg APCBC 150 960 12 6.8 5.1 1.32 182 109
USSR flag.png 152 mm/57 B-38 Chapayev SAPBC 152 950 7.5 6.1 11 5.9 117 74
USSR flag.png 152 mm/57 B-38 Chapayev APCBC 152 950 7.5 6.1 11 1.69 226 143
Britain flag.png 6 inch/50 BL Mark XXIII (152 mm) HMS Arethusa SAPBC 152 841 8 6 8.5 1.7 137 90
Japan flag.png 15 cm/50 Type 41 IJN Agano SAP 152 850 6.2 10 6 2.92 52 34

Usage in battles

As the primary armaments on a number of Italian cruisers, these guns are primarily employed in direct naval combat against other vessels. Although high-explosive shells lack the killing potential, they can still be employed to disable critical components, such as main guns or torpedo launchers. However, the key potential of these guns is unlocked with the armor-piercing shells. Despite their relatively modest penetration and explosive charge, these shells can still be effective due to the guns' above-average rate of fire, which makes it easier to destroy ammunition storage on enemy vessels.

Pros and cons

Pros:

  • High muzzle velocity
  • Above-average rate of fire
  • Well-armored turrets

Cons:

  • Very small explosive filler of the HE shells
  • Only an average penetration of the AP shells despite of having an the smallest explosive filler among its peers
  • Lack of HE-VT shells

History

152/53 mm O.T.O. Model 1929 was developed for use on the 2nd, 3rd and 4th generations of the Condottieri-class cruisers. The guns were considered advanced for their time, utilizing electrically powered training, elevation, hoists, and rammers along with the common cradle for the two guns in the turret. This allowed the guns to achieve an low weight and exceptional rate of fire compared to other 152 mm guns of the time.

However, the guns faced several issues during service, most notably a significant circular error probable attributed to factors such as the low mass of the guns, ejecta from both barrels interfering with each other, and variations in the mass of the shells and propellants used. Various modifications were implemented to reduce these issues, but they were only fully resolved with the introduction of the 152/55 mm in 1934.

Guns used following ammunition:

  • 55 kg Armor-Piercing shells fired at 975 m/s up to 28,400 meters at 45°
  • 47.5 kg Armor-Piercing shells fired at 850 m/s up to 22,600 meters - these were introduced to reduce the dispersion of the guns
  • 44.3 kg High-Explosive shells fired at 935 m/s up to 24,600 meters

Currently, the only surviving 152/53 mm O.T.O. Mod. 1929 can be found at the Città della Domenica nature and amusement park near the city of Perugia in central Italy.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

External links


Italy naval cannons
20 mm  20 mm/65 Breda · 20 mm/70 Oerlikon 3S · 20 mm/70 Scotti-Isotta Fraschini mod.1939
37 mm  37 mm/54 Breda Mod.32 · 37 mm/54 Breda Mod.38 · 37 mm/54 Breda Mod.39
40 mm  40 mm/39 Vickers-Terni mod.1915/1917 · 40 mm/39 Vickers-Terni mod.1915/1917, Modif.1930 · 40 mm/70 Breda-Bofors type 107
65 mm  65 mm/64 Ansaldo-Terni Mod.1939
76 mm  76 mm/40 Armstrong mod.1897/1910 · 76 mm/40 Armstrong mod.1897/1912 · 76 mm/40 Ansaldo mod.1917 · 76 mm/45 Schneider mod.1911 · 76 mm/50 Vickers mod.1909 · 76 mm/62 OTO-Melara Compact · 76-mm/62 SMP 3
90 mm  90 mm/50 Ansaldo model 1939
100 mm  100 mm/47 O.T.O. Mod. 1928 · 100 mm/47 O.T.O. Mod. 1937
120 mm  120 mm/45 Canet-Schneider-Armstrong mod.1918-19 · 120 mm/50 Armstrong model 1909 · 120 mm/45 O.T.O. Mod. 1926 · 120 mm/50 Ansaldo mod.1926 · 120 mm/50 O.T.O. Mod.1936
135 mm  135 mm/45 O.T.O. Mod. 1937
152 mm  152 mm/45 Schneider mod.1911 · 152/53 mm Ansaldo mod.1926 · 152/53 mm O.T.O. Mod.1929
203 mm  203 mm/50 Ansaldo mod.1924 · 203 mm/53 Ansaldo mod.1927
305 mm  305 mm/46 Armstrong model 1909 · 305 mm/46 Vickers model 1909
320 mm  320 mm/44 OTO model 1934 · 320 mm/44 Ansaldo model 1936
  Foreign:
20 mm  2 cm/65 Flakvierling 38 (Germany) · 20 mm/70 Oerlikon Mk.II (USA)
40 mm  Bofors L/60 Mark 1 (USA) · Bofors L/60 Mark 3 (USA)
76 mm  76 mm/50 Mk.33 (USA)
127 mm  127 mm/38 Mk.12 (USA)

USSR naval cannons
20 mm  ShVAK
25 mm  2M-3
30 mm  AK-230 · 30 mm/54 AK-630 · 30 mm/54 AK-630M · BP "Plamya"
37 mm  37 mm/67 70-K · V-11
45 mm  45 mm/46 21-K · 45 mm/68 21-KM · 45 mm/89 SM-20-ZIF · 45 mm/89 SM-21-ZIF
57 mm  AK-725
75 mm  75 mm/50 Canet patt.1892
76 mm  34-K · 39-K · 76 mm/60 AK-176M · AK-726 · D-56TS · F-34 · Lender AA gun, pattern 1914/15
85 mm  85 mm/52 92-K · 85 mm/54.6 ZIS-C-53 · 90-K
100 mm  100 mm/56 B-34 · 100 mm/70 SM-5-1 · Minizini
102 mm  Pattern 1911
120 mm  120 mm/50 pattern 1905
130 mm  130 mm/55 pattern 1913 · 130 mm/58 SM-2-1 · B-13
152 mm  152 mm/57 B-38
180 mm  180 mm/57 B-1-P · 180 mm/60 B-1-K
305 mm  12-inch/52 pattern 1907 · 305 mm/54 B-50
356 mm  14-inch/52 pattern 1913 (356 mm)
  Foreign:
40 mm  2pdr QF Mk.IIc (Britain) · Skoda (Czechoslovakia)
47 mm  3 pdr QF Hotchkiss (Britain)
76 mm  76 mm/40 Ansaldo mod.1917 (Italy)
88 mm  SK C/30 (Germany)
120 mm  120 mm/50 Mk.4 Bofors M1924 (Sweden) · 120 mm/50 O.T.O. Mod.1933 (Italy)
152 mm  152/53 mm O.T.O. Mod.1929 (Italy)
320 mm  320 mm/44 Ansaldo model 1934 (Italy)

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