context: Dwarf submarine type of submarine with a displacement size of less than 150 tons, and this type of submarine is occupied by a crew consisting of one to two people and in some species this number reaches 6-8 individuals, and the dwarf submarine usually does not contain places Overnight board for crew. [1] [2] [3]
question: What is a dwarf submarine?
answers.text: type of submarine with a displacement size of less than 150 tons