| EXXONVALDEZ | Oil tanker that struck Bligh Reef in Prince William Sound, Alaska, in March 1989 (5,6) |
| VALDEZ | Oil tanker that struck Bligh Reef in Prince William Sound, Alaska, in March 1989 (5,6) |
| EXXON | Oil tanker that struck Bligh Reef in Prince William Sound, Alaska, in March 1989 (5,6) |
| ORCA | Creature that's a namesake of a bay and an inlet in Prince William Sound |
| OILTANKERS | Vessels such as the Exxon Valdez which caused a major environmental disaster in Alaska's Prince William Sound (3,7) |
| ALASKA | Where is Prince William Sound? (6) |
| BIKINIATOLL | Coral reef in the Marshall Islands used for 23 nuclear bomb tests from 1946-1958 (6,5) |
| LAKEONTARIO | Great sheet of water where oil tanker's adrift, with nought but Australian on board (4,7) |
| BARRIERREEF | Largest coral reef in the world (5,7,4) |
| SUPERTANKER | Oil tanker |
| PERSIANGULF | Pal refusing to swim where oil tankers travel frequently (7,4) |
| AMOCO | ___ Cadiz, oil tanker that ran aground off Brittany in 1978 (5) |
| BRAER | Oil tanker that ran aground near Sumburgh Head, Shetland in January 1993 (5) |
| TORREYCANYON | Oil tanker that ran aground off Cornwall in 1967 (6,6) |
| ASH | 72 people died in the ... Wednesday fires that struck Victoria and South Australia in 1983 |
| SHOAL | Marine hazard, like one off Nantucket that sank the oil tanker Argo Merchant in 1976 |
| USA | North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean. |
| EMPIRE | The dominion that struck back in the second Star Wars film |
| ROE | US Supreme Court decision that struck down abortion laws in Texas and across the rest of the nation, |
| TITANIC | Luxury British liner that struck an iceberg in April 1912 (7) |
