M/F Bastø IV
| Route | Moss - Horten |
| IMO | 9771420 |
| Building year | 2016 / 2021 |
| Building yard | Sefine Shipyard, Turkey (#28) |
| Owner | T-Finans AS |
| Operator | Torghatten Sør |
| Length | 142,9 m |
| Breadth | 21,0 m |
| Draft | 5,0 m |
| GT | 7.870 |
| Machinery | 2 * GE 8L250MDC |
| Speed | 18 kn. |
| Number of passengers | 600 |
| Number of beds | 0 |
| Number of cars | 200 |
| Lanemetres | ? |
| Port of registry | Horten |
| Flag | Norway |
| Former names | Bastø IV (2016-2025) - Bastø Fosen |
| Former owners | - |
| Sister ships | Bastø V, Bastø VI, |
| Notes | Converted to hybrid ferry in 2021. |
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Moss, 21/5-2019)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Moss, 21/5-2019)
- M/F Bastø IV
Photo: Peter Hobel (21/5-2019)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Oslofjorden, 15/10-2022)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Oslofjorden, 15/10-2022)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Moss, 21/7-2023)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Moss, 21/7-2023)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Oslofjorden, 22/7-2023)
- M/F Bastø IV
Photo: Michael Koefoed-Hansen (Oslofjorden, 22/7-2023)