| Answer | Crossword Clue |
|---|---|
| gigatons | one billion tons |
| gigaton | one billion tons |
| megaton | explosive force equal to that of one million tons of TNT |
| megatons | explosive force equal to that of one million tons of TNT |
| supertanker | A very large oil tanker, specifically one whose dead-weight capacity exceeds 75,000 tons |
| supertankers | A very large oil tanker, specifically one whose dead-weight capacity exceeds 75,000 tons |
| superport | deepwater port, often one built offshore, capable of accommodating very large ships, esp. supertankers of 100,000 tons or more |
