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