This app provides essential maritime information for seafarers and shore-based professionals. It serves as an offline reference for ship stability, navigation, regulations, and marine engineering, aiding in safer seas and cleaner waters.






158+ iOS apps & games curated and reviewed
If you already know Seabook Maritime, this is the deeper bench. 158+ colreg apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.5★ (19) | No | No | Aug 2026 | ||
| 2 | $0.99 | — | No | No | Sep 2026 | ||
| 3 | Free | — | No | No | Sep 2026 | ||
| 4 | Free | 5.0★ (1) | No | No | Oct 2026 | ||
| 5 | Free | 4.4★ (215) | Yes | Yes | Oct 2026 | ||
| 6 | $3.99 | 4.8★ (120) | No | No | Oct 2026 | ||
| 7 | Free | 3.0★ (2) | No | No | Aug 2026 | ||
| 8 | Free | 5.0★ (1) | No | Yes | Oct 2026 |






This app provides essential maritime information for seafarers and shore-based professionals. It serves as an offline reference for ship stability, navigation, regulations, and marine engineering, aiding in safer seas and cleaner waters.





Master maritime navigation with this comprehensive guide to the International Regulations for Preventing Collisions at Sea. Learn about ship lights, day shapes, sound signals, and access the full COLREGs for safe sailing.






Practice maritime navigation rules and buoyage systems with this app. It helps you identify knowledge gaps and track your progress in mastering essential regulations for mariners.