''An improved shipborne model of the mortar was developed by the Imperial Japanese Army for land warfare. This is the concentrated deployment of the improvised anti-submarine equipment. These upgraded mortars were mounted forwards on ships that did not have sufficient anti-submarine equipment. Further concentrated deployment also allows these mortars to be used for ground suppression by firing multiple large salvos. | ''An improved shipborne model of the mortar was developed by the Imperial Japanese Army for land warfare. This is the concentrated deployment of the improvised anti-submarine equipment. These upgraded mortars were mounted forwards on ships that did not have sufficient anti-submarine equipment. Further concentrated deployment also allows these mortars to be used for ground suppression by firing multiple large salvos. |