New Hibiki-Class SURTASS / Ocean Surveillance Ship Launched For JMSDF

Naval News – Aki is the third vessel of the Hibiki-class of Ocean Surveillance Ships. Their mission is to gather undersea acoustic data emitted by foreign submarines. Therefore, Aki is equipped with a surveillance towed-array sensor system (SURTASS), which is a very long range active / passive sonar that can be deployed into the sea to collect various acoustic data.