A submarine is a watercraft that can operate independently underwater, as distinct from a submersible that has only limited underwater capability. The term submarine most commonly refers to large manned autonomous vessels, however historically or more casually, submarine can also refer to medium sized or smaller vessels, ( midget submarines , wet subs ), Remotely Operated Vehicles or robots . The word submarine was originally an adjective meaning "under the sea", Submarine was shortened from the term 'submarine boat'.

all is made by original basswood and first-class workmanship, as all 3D puzzles have no paint, so it is lead-free and safe toy for Children.

 Ages 6 and above.