The present disclosure provides a wide-based sub. Further, the wide-based sub may include a hull comprising a wide-based structure. Further, the wide-based sub May include a deck which may be configured for facilitating performance of an activity associated with the wide-based sub. Further, the activity includes one or more of a storage of an asset and a maritime operation associated with the wide-based sub. Further, the wide-based sub may include a propulsion device which may be configured for propelling the wide-based sub in relation to each of the underwater environment and the afloat environment. Further, the wide-based sub may include a missiles storage and firing module configured for automatic firing and reloading of a plurality of missiles in a range of 10 to 1000.