Drain the Oceans Episode Ratings Heatmap
2018 · 6 Seasons · 55 Episodes · Overall Score: 6.1/10 (55 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.28), maintaining an average of 5.9.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 | Season 6 |
|---|---|---|---|---|---|---|
| Ep 1 | 6.5 | 6.7 | 5.5 | 5.5 | 6.0 | 5.7 |
| Ep 2 | 7.3 | 6.3 | 6.3 | 6.2 | 6.0 | 6.3 |
| Ep 3 | 6.7 | 6.7 | 6.0 | 5.5 | 5.5 | 6.7 |
| Ep 4 | 6.3 | 6.0 | 6.0 | 5.5 | 5.0 | 6.0 |
| Ep 5 | 6.5 | 7.0 | 6.0 | 5.5 | 6.0 | 5.7 |
| Ep 6 | 6.7 | 6.3 | 5.5 | 5.5 | 5.0 | 6.0 |
| Ep 7 | 6.7 | 6.7 | 6.0 | 5.5 | – | – |
| Ep 8 | 7.0 | 6.3 | 6.0 | 6.0 | – | – |
| Ep 9 | 6.7 | 5.3 | 5.7 | – | – | – |
| Ep 10 | 6.0 | 6.3 | 6.3 | – | – | – |
| Ep 11 | – | 6.0 | – | – | – | – |
| Ep 12 | – | 6.0 | – | – | – | – |
| Ep 13 | – | 6.0 | – | – | – | – |
| Ep 14 | – | 6.0 | – | – | – | – |
| Ep 15 | – | 6.3 | – | – | – | – |
| Season Avg | 6.6 | 6.3 | 5.9 | 5.7 | 5.6 | 6.1 |
Ratings Analysis & Trajectory
Across 6 seasons and 55 episodes, Drain the Oceans has earned an overall series rating of 6.1 out of 10. The series reached its critical peak early, showing a slight contraction in audience satisfaction in later chapters.
The single highest-rated hour of television in the series is Season 1, Episode 2 ("Gulf of Mexico"), rated at an extraordinary 7.3/10 with 4 ratings. Conversely, the lowest-rated installment is Season 5, Episode 6 ("Narcos"), landing at 5.0/10.
The most precipitous single-episode shift occurred in Season 2 between Episode 8 ("Pacific War Megawrecks", 6.3) and Episode 9 ("Thai Cave Rescue", 5.3), a swing of 1 points.
Top 10 Highest Rated Episodes of Drain the Oceans
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 2 | Gulf of Mexico | 7.3 | 4 | Jun 4, 2018 |
| #2 | Season 1, Ep 8 | Mysteries of the China Seas | 7.0 | 3 | Jul 16, 2018 |
| #3 | Season 2, Ep 5 | Secrets of the Civil War | 7.0 | 3 | Jul 22, 2019 |
| #4 | Season 1, Ep 3 | Lost Worlds of the Mediterranean | 6.7 | 3 | Jun 11, 2018 |
| #5 | Season 1, Ep 6 | Deadly Pacific | 6.7 | 3 | Jul 2, 2018 |
| #6 | Season 1, Ep 7 | Egypt's Lost Wonders | 6.7 | 3 | Jul 9, 2018 |
| #7 | Season 1, Ep 9 | Ultimate Battleships | 6.7 | 3 | Jul 23, 2018 |
| #8 | Season 2, Ep 1 | Secrets of D-Day | 6.7 | 3 | Jun 3, 2019 |
| #9 | Season 2, Ep 3 | Killer U-Boats | 6.7 | 3 | Jun 17, 2019 |
| #10 | Season 2, Ep 7 | Secrets of The Spanish Armada | 6.7 | 3 | Aug 5, 2019 |