. "10144849"^^ . . . . . . . . . . . . . . . "A semi-submarine (semi-sub) is a surface vessel that is not capable of diving, but has accommodation space below the waterline featuring underwater windows. The watercraft is similar to glass-bottom boats, but with deeper draft. Both types of boats are mainly used to provide sight-seeing trips for tourists in clear, calm, and often shallow, waters."@en . . . . . . . . . . . . . . "1114012211"^^ . . . . "A semi-submarine (semi-sub) is a surface vessel that is not capable of diving, but has accommodation space below the waterline featuring underwater windows. The watercraft is similar to glass-bottom boats, but with deeper draft. Both types of boats are mainly used to provide sight-seeing trips for tourists in clear, calm, and often shallow, waters."@en . . . . . . "2566"^^ . . . . . . . . . . . . . . . . . . . . "Semi-submarine"@en .