- Albatros Expeditions
- Antarctica 21
- Antarpply
- Aurora Expeditions
- G Adventures
- Heritage Expeditions
- Hurtigruten
- Lindblad Expeditions (Adventure World)
- Noble Caledonia
- Oceanwide
- Polar Latitudes
- Polar Quest
- Ponant
- Poseidon Expeditions
- Quark Expeditions
- Silversea Expeditions
- Swan Hellenic