The Mk VIII Mod 1 SDV can deliver several fully equipped SEALs to the mission area, be "parked" or loiter in the area, retrieve the SEALs, and return home. SDVs are generally launched from a Dry ...

A Seal delivery vehicle (SDV) is a mini-submarine designed to deliver SEALs underwater without relying on flipper power. The Navy initially wanted each SEAL team to have its own complement of SDVs.