e/Amphibious assault submarine

Information
has gloss	eng: An amphibious assault submarine is a (still theoretical) submarine equivalent of an amphibious assault ship. While such ships have been proposed in the past by both the U.S. and the Soviet Union, none has ever been built (though at least one of the larger Soviet designs did start construction). Converted or standard submarines have often been used to transport small groups of soldiers or supplies, however.
lexicalization	eng: Amphibious assault submarine
instance of	e/Amphibious assault ship