100/65 mm Type 98 mod A (100 mm)
This page is about the Japanese naval cannon 100/65 mm Type 98 mod A (100 mm). For other uses, see Type 98 (Disambiguation). |
Contents
Description
The 100/65 mm Type 98 is a 100 mm dual-purpose Japanese naval cannon. The Type 98 mod A is the twin turret mount of the Type 98 gun as found in-game on the Akizuki-class destroyers. It is notable for its very high rate of fire and 1,000 m/s muzzle velocity, the highest of any naval mounted cannon currently in the game, making it an excellent anti-air gun, with the only concern being the lack of HE-VT shells.
Vehicles equipped with this weapon
General info
The Type 98 has a bore diameter of 100 mm, a bore length of 6.50 m, is 6.73 m long, and weighs 3,053 kg.
Available ammunition
Two shells are available for the Type 98: HE and HE-TF. HE-TF is an airburst time-fuse shell that detonates a certain amount of time after firing, set by the crew. Otherwise, both shells are nearly identical.
Penetration statistics | |||||||
---|---|---|---|---|---|---|---|
Ammunition | Type of warhead |
Penetration @ 0° Angle of Attack (mm) | |||||
100 m | 1,000 m | 2,000 m | 3,000 m | 4,000 m | 5,000 m | ||
100 mm HE | HE | 13 | 13 | 13 | 13 | 13 | 13 |
100 mm HE-TF | HE-TF | 13 | 13 | 13 | 13 | 13 | 13 |
Shell details | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Ammunition | Type of warhead |
Velocity (m/s) |
Projectile mass (kg) |
Fuse delay (m) |
Fuse sensitivity (mm) |
Explosive mass (TNT equivalent) (g) |
Ricochet | |||||
0% | 50% | 100% | ||||||||||
100 mm HE | HE | 1,000 | 13 | 0 | 0.1 | 950 | 79° | 80° | 81° | |||
100 mm HE-TF | HE-TF | 1,000 | 13 | 0 | 0.1 | 950 | 79° | 80° | 81° |
Comparison with analogues
Common destroyer primary guns include 5/38 Mark 12 Dual Purpose (127 mm), 12.7 cm SKC/34, B-13 (130 mm), 4,7 inch/45 Mk.XII, and Type 3 (127 mm). Compared to these 5-inch guns, the 100 mm is considerably smaller and thus carries a pitiful 950 g of TNT. Even compared to most 4 inch guns, this is lacking. In fact, the only destroyer-mounted gun with less TNT equivalence in the main HE shell is the 4 in QF Mark V.
However, the Type 98 makes up for this discrepancy in explosive filling with its very fast rate of fire, effectively sending as much or more TNT per minute as some of the bigger 5-inch guns. The Type 98 also has a muzzle velocity of 1,000 m/s, a velocity unmatched by any naval cannon currently in the game, even compared to the 8-inch guns of heavy cruisers.
Usage in battles
The Type 98 has the fastest muzzle velocity of any cannon in the game, making it great for long-range engagements. Despite the small explosive filling, with its quick reload, ships armed with the Type 98 can overwhelm their enemies with sheer volume of fire. The muzzle velocity and rate of fire are especially useful for taking down aircraft using the HE-TF shell.
Because of the low TNT equivalence and relatively small calibre, the HE rounds often struggle against the armoured destroyer. Against such targets, disabling the enemy's turrets first is often best. However, against more heavily armoured targets such as cruisers, the Type 98 guns are entirely ineffective because it lacks any sort of AP shell.
Pros and cons
Pros:
- Excellent muzzle velocity, fastest in the game
- Very quick rate of fire
- Ability to reach targets directly above the vessel (vertical guidance of +89°)
Cons:
- Lack of any AP shell
- Low explosive filling per shell
History
The 100/65 mm Type 98 was considered one of the best heavy naval anti-aircraft guns of World War Two. Designed in 1938, production began in 1940. The gun came in two versions: a monobloc design and one with a removable barrel lining. Both versions used a horizontal sliding breech design. Loading was manual, assisted by mechanical spring-driven rammers that were cocked by the recoil from firing, allowing the gun to be reloaded at any elevation (i.e., without needing to reset it to the neutral position).
Only HE shells were developed for the Type 98. The Type 98 fired a 13 kg time-fused projectile with a 15 kg propellant charge. The fuse was set by machine prior to being loaded. The projectile contained a 950 g TNT explosive charge and could be fired at 1,000 m/s muzzle velocity at up to 21 rounds per minute. Because of the fast rate of fire and muzzle velocity, the Type 98 had a short barrel life, only being able to fire approximately 400 rounds before needing replacement.
The Type 98 was mounted on the Akizuki-class destroyers, the light cruiser Ooyodo, the aircraft carrier Taihou, and was planned to be used on the aircraft carrier Shinano and the planned B-64/B-65 class battlecruisers. On the Akizuki-class destroyers, the Model A twin mount was used. It could traverse up to 16° per second horizontally and vertically and could elevate -10°/90° vertically. Typically, it could fire 15 rounds per minute.
Throughout the war, 169 Type 98 guns were produced, 116 of which were mounted on naval vessels. Starting in 1945, most new productions were diverted to land-based AAA installations.
Media
Excellent additions to the article would be video guides, screenshots from the game, and photos.
See also
External links
Japan naval cannons | |
---|---|
20 mm | JM61 · Type 98 |
25 mm | 25 mm/60 Type 96 |
37 mm | Type 4 · Type 11 pattern 1922 |
40 mm | 40 mm/62 Vickers |
57 mm | Type 97 |
75 mm | Type 88 AA |
76 mm | 3-inch/40 Type 41 · 8 cm/40 3rd Year Type · 8 cm/60 Type 98 |
100 mm | 100/65 mm Type 98 mod A |
120 mm | 120 mm/45 3rd Year Type · 120 mm/45 10th year type |
127 mm | 5 inch/40 Type 89 · 127 mm/50 3rd Year Type |
140 mm | 140 mm/50 3rd Year Type |
152 mm | 6-inch/45 Type 41 · 15 cm/50 Type 41 |
155 mm | 155 mm/60 3rd Year Type |
200 mm | 20 cm 3rd year type No.1 |
203 mm | 20 cm/45 Type 41 · 20 cm/50 3rd year type No.2 |
356 mm | 36 cm/45 Type 41 |
410 mm | 410 mm/45 Type 3 |
Foreign: | |
20 mm | 20 mm/70 Oerlikon Mk.II (USA/Britain) |
40 mm | Bofors L/60 Mark 1 (USA) · Bofors L/60 Mark 2 (USA) · Bofors L/60 Mark 3 (USA) |
47 mm | 3 pdr QF Hotchkiss (Britain) |
76 mm | 3-inch Mark 10 (USA) · 3 inch Mk.33 (USA) · 3-inch Mk.34 (USA) |
120 mm | 4,7-inch/40 Armstrong (Britain) |
127 mm | 5 inch/38 Mk.12 (USA) |
305 mm | 12-inch/45 Vickers (Britain) · 12-inch/50 Vickers (Britain) |