This article from the U.S suggests that the Lamprey a similar concept to Ghost Shark can be deployed from submarines per hitchhiking not torpedo launched ,would such an arrangement work for the Ghost shark to get it into location quicker and save battery life
.https://www.armyrecognition.com/news/navy-news/2026/u-s-launches-lamprey-sub-drone-with-torpedoes-and-uav-launch-capability-for-undersea-warfare
.https://www.armyrecognition.com/news/navy-news/2026/u-s-launches-lamprey-sub-drone-with-torpedoes-and-uav-launch-capability-for-undersea-warfare