today's mark 8 mod 1 provides nsw with an unprecedented capability that combines the attributes of clandestine underwater mobility and the combat swimmer. the advanced seal delivery system (asds) program that would have provided nsw a new (dry) submersible for long range infiltration missions was abandoned in 2009. however, news reports have stated that ussocom have purchased a new dry seal delivery vehicle called the dry combat submersible and will be become operational around 2018/2019.