| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | mercator | navigation | Mercator projection is a widely-used cylindrical map projection that preserves angles and shapes, making it useful for navigation and sea travel. | 1 |
| 2 | mercator | navigation | Mercator projection is valuable for navigational purposes, especially for plotting straight lines and angles on charts and maps. | 1 |