Difference between revisions of "S.I. 250/533,4X7,5 Tipo A (533 mm)"

Revision as of 13:47, 3 January 2023

Description

S.I. 250/533,4X7,5 Tipo A (533 mm) is a typical Italian naval torpedoe - in its base version an extremely fast, but also extremely short-ranged. With the Torpedo Mode increasing range by 8000 meters to a respectable 12 km but at a much slower pace - just 48 km/h. Historically very little is known in the English-language sources about the 533mm Type A (Tipo A) torpedoes and how they differentiated from the other types of the calibre used in the Regia Marina.

S.I. 250/533,4X7,5 Tipo A ejected from a twin torpedo turret on RN Bartolomeo Colleoni

Vehicles equipped with this weapon

General info

Just like most of the other Italian torpedoes on the bluewater ships, Tipo A undergoes a radical transformation once the Torpedo Mode is researched and installed. From being a situational, short-range burst weapon able to take down enemy cruisers while giving them a minimal time to react, to a standard long-range torpedo able to threaten stationary and predictable targets.

Comparing to the other Italian 533mm torpedoes Tipo A has the lowest, but still very respectable maximum speed and a slightly smaller warhead.

Effective damage

Due to a relatively mediocre warhead this torpedo neither excels nor disappoints in terms of a damage potential. Hit near turrets of destroyers and cruisers will nearly always score a direct kill, while hits into the engines will be survivable by cruisers and some of the better-armored destroyers.

Comparison with analogues

Comparison chart with other naval torpedoes

Name	Diameter (mm)	Mass (kg)	Explosive type	TNT equivalent (kg)	Max speed (km/h)	Max range (km)
12.75 inch Mark 44	324	235	HBX	54.4	56	5.49
12.75 inch Mark 46	324	235	TNT	44.5	91	7.30
18 inch Mark XII	450	702	TNT	176	74	1.37
18 inch Mark XV	450	817	Torpex	395.2	61	3.20
18 inch Type 38 No.2 B	450	663	Shimose	104.5	59	2.00
18-inch Mk.7	450	720	TNT	93	59	3.65
21 in Mk.8	533	1,252	TNT	146	50	9.14
21 inch Mark I	533	1,270	TNT	102	56	11.00
21 inch Mk.20 Bidder	533	821	TNT	89	37	11.00
21 inch Type 43 (1910)	533	1,187	Shimose	143	50	8.00
45-36NU	450	951	TNT	200	76	4.00
53-38	533	1,615	TNT	300	82	4.00
53-39	533	1,780	TNT	317	94	4.00
53-56	533	2,000	TNT	400	93	8.00
53-57	533	2,000	TNT	306	83	18.00
53-65	533	2,070	TNT	300	126	12.00
Bliss-Leavitt Mk.1	533	680	TNT	91	50	3.66
C/06D	450	810	TNT	122.6	50	5.90
G6c	533	1,008	TNT	160	50	5.00
G7a	533	1,528	SW39a	358.4	81	6.00
H/8	600	2,160	SW39a	268.8	67	6.00
LT 1A/1	450	812	TNT	250	74	2.00
Mark 35	533	803	Torpex	196	50	13.71
Mk.8-3 C/D	533	1,373	TNT	174.2	50	12.35
Mk.13	569	884	TNT	178	56	5.21
Mk.15	533	1,559	TNT	224	83	5.50
Mk.16	533	1,766	Torpex	915.2	85	6.40
Mk.IV	533	1,454	TNT	234	65	7.30
Mk.IX	533	1,693	TNT	340	67	9.60
Mk.IX**	533	1,693	Torpex	587.2	76	10.00
Mk.V	533	1,736	TNT	305	74	4.57
Mk.VIII	533	1,566	TNT	327	84	4.57
Model 1923DT	550	2,100	TNT	308	72	9.00
Pattern 1910	450	665	TNT	100	54	3.00
Pattern 1912	450	810	TNT	100	80	2.00
R.G.F. Mark VI**	450	700	TNT	134	56	5.49
S.I.170/450X5,25	450	860	TNT	170	76	4.00
S.I.270	533	1,715	TNT	270	74	4.00
S.I. 250/533,4X7,5 Tipo A	533	1,781	TNT	250	76	4.00
S.I. 270/533,4X7,2 Tipo I	533	1,700	TNT	270	89	4.00
S.I. 270/533,4X7,2 Tipo M	533	1,715	TNT	270	93	4.00
S.I. 270/533X6.84 Tipo L	533	1,700	TNT	270	93	4.00
Seal DM2A1	533	1,370	TNT	250	61	20.00
SET-40	400	550	TNT	80	54	8.00
SET-53M	533	1,480	TNT	100	54	14.00
SET-65	533	1,740	TNT	205	74	16.00
Type 2	450	1,000	Type 97	448	72	3.00
Type 6	533	1,432	Shimose	223.3	65	7.00
Type 8 No.2	610	2,362	Shimose	380.6	70	10.00
Type 43	450	663	Shimose	104.5	48	5.00
Type 44 No.2	450	750	Shimose	121	65	4.00
Type 54 model 3	533	1,600	TNT	100	44	6.00
Type 72 mod.1	533	1,760	TNT	300	120	10.00
Type 89	533	1,660	Type 97	384	83	5.50
Type 90	610	2,540	Type 97	480	85	7.00
Type 93 Model 1, Mod 2	610	2,700	Type 97	627.2	91	20.00
Type 93 Model 3	610	2,800	Type 97	998.4	91	15.00
W.200/450X5,75	450	930	TNT	200	81	3.00
Whitehead A 110/450	450	936	TNT	110	56	4.00

Usage in battles

The high speed and a short range make this torpedo perfect for ambushes with a use of terrain, especially in the Realistic Battles where torpedo speeds are much lower and ships less manoeuvrable than in the Arcade Battles. Torpedoes have a minimum arming distance of 50 meters, so that separation should be kept in mind when attacking enemy ships, in particular these on a collision course.

Torpedo mode turns them into a much more conventional gameplay, being able to take down NPC-controlled ships from a safe distance and weaponising narrow choke-points between islands.

Pros and cons

Pros:

Without Torpedo Mode
- Very high speed
With Torpedo Mode
- Good range

Cons:

Without Torpedo Mode
- Its short range makes it very situational
With Torpedo Mode
- Lower maximum speed than most cruisers and battleships makes it easy to avoid

History

In 1924 Italy annexed Fiume where the Whitehead torpedo factory was located and begun manufacturing their own derivatives of the design. And thus in the interwar years the Silurificio Italiano 270/533.4 Type A was born and manufactured in Baiae. S.I. standing for Silurificio Italiano, the name of the factory.

Media

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

External links

Torpedoes
USA
450 mm	Mk.7
533 mm	Bliss-Leavitt Mk.1 · Mark 35 · Mk.8 · Mk.8-3 C/D · Mk.15 · Mk.16
569 mm	Mk.13 · Mk.13-6^† · Mk.13-6 Case^†
Germany
324 mm	Mark 44
450 mm	C/06D · LT 1A/1 · F5W^† · F5b^†
500 mm	G6c
533 mm	G7a · Seal DM2A1
600 mm	H/8
USSR
400 mm	SET-40
450 mm	Pattern 1910 · Pattern 1912 · 45-36NU^‡ · 45-36AN^† · 45-36MAN^†
533 mm	53-38 · 53-39 · 53-56 · 53-57 · 53-65 · SET-53M · SET-65
Britain
450 mm	R.G.F. Mark VI** · Mark XII^‡ · Mark XV^‡
533 mm	Mark I · Mk.IV · Mk.V · Mk.VIII · Mk.IX · Mk.IX** · 21 inch Mk.20 Bidder
Japan
324 mm	Mark 46
450 mm	Type 2 · Type 38 No.2 B · Type 43 · Type 44 No.2 · Type 91 Model 2^† · Type 91 Model 3^†
533 mm	Type 6 · Type 43 (1910) · Type 54 Model 3 · Type 72 Model 1 · Type 89
610 mm	Type 8 No.2 · Type 90 · Type 93 Model 1, Mod 2 · Type 93 Model 3
Italy
450 mm	F200/450^† · S.I.170/450X5,25 · W.200/450X5,75 · Whitehead A 110/450
533 mm	S.I.270 · S.I. 250/533,4X7,5 Tipo A · S.I. 270/533,4X7,2 Tipo I · S.I. 270/533X6.84 Tipo L · S.I. 270/533,4X7,2 Tipo M
France
400 mm	1926DA^†
450 mm	1909R
550 mm	Model 1923DT
Sweden
450 mm	m/38^† · m/41^†
	† = Aerial torpedo ‡ = Aerial and ship-launched torpedo

@@ Line 1: / Line 1: @@
 == Description ==
-''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.''
+<!-- ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.'' -->
+'''S.I. 250/533,4X7,5 Tipo A (533 mm)''' is a typical Italian naval torpedoe - in its base version an extremely fast, but also extremely short-ranged. With the Torpedo Mode increasing range by 8000 meters to a respectable 12 km but at a much slower pace - just 48 km/h. Historically very little is known in the English-language sources about the 533mm Type A (Tipo A) torpedoes and how they differentiated from the other types of the calibre used in the Regia Marina.
+[[File:S.I. 250 533,4X7,5 Tipo A launched by Bartolomeo Colleoni.jpg|thumb|'''S.I. 250/533,4X7,5 Tipo A''' ejected from a twin torpedo turret on {{Specs-Link|it_cruiser_bartolomeocolleoni_1940}}]]
 === Vehicles equipped with this weapon ===
 <!-- ''List out vehicles that are equipped with the weapon.'' -->
@@ Line 12: / Line 14: @@
 == General info ==
-''Tell us about the tactical and technical characteristics of the torpedo.''
+<!-- ''Tell us about the tactical and technical characteristics of the torpedo.'' -->
+Just like most of the other Italian torpedoes on the bluewater ships, Tipo A undergoes a radical transformation once the Torpedo Mode is researched and installed. From being a situational, short-range burst weapon able to take down enemy cruisers while giving them a minimal time to react, to a standard long-range torpedo able to threaten stationary and predictable targets.
+Comparing to the other Italian 533mm torpedoes Tipo A has the lowest, but still very respectable maximum speed and a slightly smaller warhead.
 === Effective damage ===
-''Describe the type of damage produced by this type of torpedo (high explosive, splash damage, etc)''
+<!-- ''Describe the type of damage produced by this type of torpedo (high explosive, splash damage, etc)'' -->
+Due to a relatively mediocre warhead this torpedo neither excels nor disappoints in terms of a damage potential. Hit near turrets of destroyers and cruisers will nearly always score a direct kill, while hits into the engines will be survivable by cruisers and some of the better-armored destroyers.
 === Comparison with analogues ===
-''Give a comparative description of torpedoes that have firepower equal to this weapon.''
+<!-- ''Give a comparative description of torpedoes that have firepower equal to this weapon.'' -->
+{{sp-begin|Comparison chart with other naval torpedoes}}
+{{Naval torpedoes characteristics}}
+{{sp-end}}
 == Usage in battles ==
-''Describe situations when you would utilise this torpedo in-game (vehicle, pillbox, base, etc)''
+<!-- ''Describe situations when you would utilise this torpedo in-game (vehicle, pillbox, base, etc)'' -->
+The high speed and a short range make this torpedo perfect for ambushes with a use of terrain, especially in the Realistic Battles where torpedo speeds are much lower and ships less manoeuvrable than in the Arcade Battles. Torpedoes have a minimum arming distance of 50 meters, so that separation should be kept in mind when attacking enemy ships, in particular these on a collision course.
+Torpedo mode turns them into a much more conventional gameplay, being able to take down NPC-controlled ships from a safe distance and weaponising narrow choke-points between islands.
 === Pros and cons ===
-''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.''
+<!-- ''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' -->
 '''Pros:'''
-*
+* Without Torpedo Mode
+** Very high speed
+* With Torpedo Mode
+** Good range
 '''Cons:'''
-*
+* Without Torpedo Mode
+** Its short range makes it very situational
+* With Torpedo Mode
+** Lower maximum speed than most cruisers and battleships makes it easy to avoid
 == History ==
-''Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.''
+<!-- ''Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.'' -->
+In 1924 Italy annexed [[wikipedia:Rijeka|Fiume]] where the [[wikipedia:Whitehead torpedo|Whitehead torpedo]] factory was located and begun manufacturing their own derivatives of the design. And thus in the interwar years the ''Silurificio Italiano'' 270/533.4 Type A was born and manufactured in [[wikipedia:Baiae|Baiae]]. S.I. standing for ''Silurificio Italiano'', the name of the factory.
 == Media ==
@@ Line 44: / Line 63: @@
 == External links ==
+<!--
 ''Paste links to sources and external resources, such as:''
 * ''topic on the official game forum;''
-* ''other literature.''
+* ''other literature.'' -->
+* [http://www.navweaps.com/Weapons/WTIT_List.php <nowiki>[NavWeaps]</nowiki> List of Torpedoes of Italy]
+* [https://comandosupremo.com/whitehead-torpedo/ <nowiki>[Comando Supremo]</nowiki> Whitehead Torpedo: Its Origin and Italian Adaptation]
 {{Torpedoes}}
 [[Category:Naval special armaments]]

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