ForSea Ferries emerged from the predecessor company HH-Ferries, which was founded in 1996 and has been using the name ForSea Ferries since 2018. ForSea Ferries is limited to a single route, the crossing of the Kattegat from the port of Helsingör in the far north-east of the Danish Baltic Sea island of Zealand to Helsingborg on the Swedish west coast. At only around four kilometers, this route is the shortest sea connection between these two countries and is still one of the most important ferry connections in the Baltic Sea, despite the road connection via the Öresund Bridge opened in 2000. The ferry is a time-saving alternative to the Öresund Bridge, particularly for freight traffic from the greater Copenhagen area to central and northern Sweden.
ForSea Ferries operates this route with an exceptionally high frequency: with two to three departures per hour all year round and around 55 departures per day (around the clock on weekdays), this is one of the busiest ferry routes in Europe. As this route is mainly used commercially, the timetable is significantly reduced on Saturdays and Sundays with around 20 departures. In addition to the public timetable, ForSea Ferries also offers additional trips for truck transportation.
ForSea Ferries operates a fleet of five ships with capacities of between 380 and 1100 passengers. Two of them, the "Aurora" and the "Tycho Brahe", are electrically powered, which gives the company an exceptionally good eco-balance. In keeping with the short journey time of just 20 minutes, the facilities on board are rather limited; there are no cabins and catering on most of the ships is restricted to a simple café, with only the "Aurora" also having a restaurant.