| Clue | Source | Date |
|---|---|---|
| Fast ferry | Newsday | 29 Jul 2018 |
| Water-propelled craft | The Washington Post | 18 Apr 2018 |
| Water-propelled craft | LA Times Daily | 18 Apr 2018 |
| Water-propelled craft | ||
| Propellerless craft | New York Times | 16 Dec 2015 |
| Propellerless craft | ||
| Fast ferry | ||
| Racy river craft |