"Jomfruen" is a marina that offers a range of experiences on the Oslofjord. The company focuses on historic vessels, which are available for hire, and offers boat trips with sightseeing. These tours include audio-guiding in 13 languages, giving visitors the opportunity to learn more about the area's history and sights. In collaboration with Oslofjorden Friluftsråd, they emphasize environmentally friendly experiences.
In addition to sightseeing, "Jomfruen" offers varied cruise experiences, including special events such as jazz and blues cruises. There are also special offers for children and infants, making it a family-friendly activity. On board the boats there is a bistro and bar, which gives guests the opportunity to enjoy food and drink while experiencing the fjord. The company has daily departures for sightseeing and the Bygdøy ferry, and is a 100% Norwegian company with local knowledge of Oslo and the fjord.