| Clue | Source | Date |
|---|---|---|
| Boat-building places | Thomas Joseph | 12 Apr 2023 |
| Where boats get built | Thomas Joseph | 05 Jan 2022 |
| Where some subs are fixed | LA Times Daily | 26 Jan 2019 |
| Where some subs are fixed | The Washington Post | 26 Jan 2019 |
| Where some subs are fixed | ||
| Places where sea vessels are repaired and built | ||
| Dry docks | ||
| Dry docks | ||
| Liner builders |