1. ちかてつ   sailboat   monorail   subway   raft   Hint Half-n-half Clue   2. ろめんでんしゃ   monorail   streetcar, tram   raft   airliner   Half-n-half Clue   3. はんせん   raft   airliner   monorail   sailboat   Half-n-half Clue   4. たんきてつどう   airliner   streetcar, tram   raft   monorail   Half-n-half Clue   5. ていきりょきゃくき   subway   streetcar, tram   airliner   sailboat   Half-n-half Clue   6. いかだ   raft   subway   airliner   streetcar, tram   Half-n-half Clue