Mighty Ships Season 4 Season 4

| No_in_series | No_in_season | Title | Vessel_Type | Vessel_Operator | Narrated_by | Original_air_date |
|---|---|---|---|---|---|---|
| 20 | 1 | MV Beluga Bremen | Cargo Ship | Beluga Shipping | Anthony Green | 2011 |
| 21 | 2 |  USNS Robert E. Peary  | Cargo Ship | US Navy | Anthony Green | 2011 |
| 22 | 3 | DSV Skandi Arctic | Diving Support Vessel | DOF Subsea | Barbara Budd | 2011 |
| 23 | 4 |  MS Stena Britannica  | ROPAX Ferry | Stena Line | Anthony Green | 2011 |
| 24 | 5 |  USCGC Bertholf  | National Security Cutter | US Coast Guard | Barbara Budd | 2011 |