Type 8 No.2 (610 mm)

Type 8 No.2 captured in the air

Description

Type 8 No.2 is a powerful, decently fast, long-range torpedo, able to take on enemy battleships with ease.

Vehicles equipped with this weapon

• IJN Kako
• IJN Sendai
• IJN Yubari
• IJN Amagi

General info

Torpedo characteristics
Torpedo Mode	Mass (kg)	Maximum speed in water (km/h)	Travel distance (km)	Depth stroke (m)	Arming distance (m)	Explosive type	Explosive mass (kg)	TNT equivalent (kg)
No	2,362	70	10	1	50	Shimose	346	380.6
Yes	2,362	54	18	1	50	Shimose	346	380.6

Given that the effective range of the torpedo is as high as 10 kilometers even without the torpedo mode, it's highly recommended to avoid using Torpedo Modification in both: Arcade and Realistic battles. The reach of 10 kilometers is enough to drop torpedoes at an unsuspecting distant target at or near the enemy spawn (usually 12 kilometers away). Adding these 8 kilometers of reach with the torpedo mode increases the travel time at 10 kilometers range from 480 s to 622 s in Arcade (or 514 s to 667 s in Realistic), a 77% increase!

Torpedo mode does have some uses in the Naval Enduring Confrontation mode, primarily against NPC-controlled vessels.

Effective damage

The Type 8 No.2 torpedo carries a 346 kg Shimose warhead, which is equivalent to 380.6 kg TNT. It's large enough to breach pretty much any torpedo bulge.

Comparison with analogues

The Type 8 No.2 is a more conventional torpedo and will pale in comparison to the Type 93 Model 1, Mod 2 (610 mm) & Type 93 Model 3 (610 mm) but will still outshine nearly all the torpedoes of the other nations, featuring an excellent combination of range, speed and explosive filler.

Name	Country of origin	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
G7		500	1,365	TNT	249.6	69	4.00
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
1909R		450	716	TNT	144	61	2.00
Model 1919V		550	1,358	Picric acid	261.8	80	2.00
Model 1923DT		550	2,100	TNT	308	72	9.00
1926V		400	674	TNT	144	81	2.00
L3		550	910	TNT	200	46	5.00
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
SET-72		400	730	TNT	80	74	8.00
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

Having a great combination of range, speed and warhead, the Type 8 is best used without torpedo mode to effectively counter enemy battleships and battlecruisers. Hitting cruisers or destroyers with these torpedoes will typically be lethal with a single hit, either directly, or crippling them by flooding. Much like other torpedoes, it can be effectively used to deny critical passages between the islands.

Pros and cons

Pros:

• Large warhead
• Good combination of speed and range even without the Torpedo Mode modification
• Exceptionally long-range with the Torpedo Mode, exceeding the playable area of most naval maps in the game

Cons:

• Relatively low top speed with the Torpedo Mode modification installed
• The large size of the torpedo means that the vessels carrying it will typically have very few torpedoes available.

History

Type 8 No.2 (610 mm) twin-mount on IJN Sendai.

The Type 8 torpedo as a replacement for the Type 6, significantly increasing range, speed, and explosive power, at the expense of overall larger dimensions and mass. The torpedo was designed right after the end of the Great War, as the Japanese designers were seeking to arm their cruisers with torpedoes able to challenge modern battleships. At the time of introduction to service in 1920, it was the heaviest torpedo in the world.

Compared to the Type 8 No. 1, the No.2 variant was propelled by a more powerful compressed-air radial engine manufactured by Schwarzkopf with three modes available: 20 km at 27 knots, 15 km at 32 knots, and 10 km at 38 knots, and the warhead was increased in size by additional 49 kilograms.

It was used on the following torpedo mounts:

• Sendai-class used twin-mount 8.8 m x 3.04 m x 1.13 m with a total mass of 8.45 tons. It was loaded manually, but training was done by a 5 hp electric motor, which provided a targeting speed of 6° per second. In case of a failure, a manual crank was provided, with an estimated targeting speed of 4° per second.
• Furutaka-class used a Type 12 "side-opening fixed above-water torpedo tube", a 9.11 m x 1.05 m x 1.5 m fixed mount with a total mass of 7.05 tons. It had a unique design, allowing for a reload from the top, rather than from the rear.

Media

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

See also

• Type 6 (533 mm) - predecessor
• Type 90 (610 mm) - successor
• Model 1923DT (550 mm) - similar French heavy torpedo

External links

• [NavWeaps] 61 cm (24") Type 8 No. 2 (1920)
• Eric Lacroix and Linton Wells II, Japanese Cruisers of the Pacific War, Naval Institute Press (pp. 38, 65, 67)
• John Campbell, Naval Weapons of World War Two, Naval Institute Press (p. 204)