10 cm/65 Type 98
10 cm DP Type 98
General Historical Information
Place of origin: Japan
Category: Naval Gun
Used by:


Debut in FHSW: Debut in Battlefield 1942 as mainguns of the IJN Hatsuzuki
Passengers: 1
Calibre: 10 cm
Ammunition: ↑ AA
↓ HE
Elevation: 90°
Traverse: 360° as stationary gun
Rate of Fire: 15 rpm
Maximum Range: 19,000 m
Artillery battery: No
Mobile: No
Used by vehicles / ships: Akizuki class Destroyers:
IJN Hatsuzuki
IJN Fuyuzuki
IJN Suzutsuki
Position 1: Gunner
Historical Picture
10 cm65 Type 98

The 10 cm/65 Type 98 naval gun (六五口径九八式一〇糎高角砲?), also known as the long 10cm high-angle gun (長10センチ高角砲), was a light caliber naval gun of the Imperial Japanese Navy used during World War II. It was employed on the aircraft carrier Taihō, the light cruiser Oyodo, and Akizuki-class destroyers. From 1945, land-based installations became more prioritized. The gun was considered by the Japanese to be their finest anti-aircraft artillery weapon. After the end of World War II, the gun remained in service on the two Japanese destroyers ceded to the Soviet Union and the Republic of China as war reparations.

The Allied forces first captured a shore-based twin-mounting of this weapon at Iwo Jima.


The 10 cm (3.9 in) 65 caliber Type 98 gun utilized a horizontal sliding breech, in addition to either monobloc (made from a single forging) or replaceable liner construction of the barrel. The gun featured a spring-powered rammer that was cocked by means of the recoil of the gun being fired; this allowed the rammer to load the gun at any elevation. 169 of the guns were completed, with 68 being land-based. One shortcoming of the gun was that it had a service life of only 350-400 effective full charges, as a result of the high muzzle velocity.