When the municipality of Styrsö was incorporated into the city of Gothenburg in 1974, the same fare was introduced in the southern archipelago as on trams and buses.It became cheaper to travel with the boats and the number of trips increased.The population of the islands increased as more people moved out and travel increased so quickly that the capacity of the ships at the time was not enough.Styrsöbolaget therefore ordered a new ship which was delivered from Djupviks Varv in the summer of 1975 under the name Ejdern.The choice of name was a return to a tradition that began as early as the 1870s when most of the archipelago boats in Gothenburg's southern and northern archipelago were named after birds.For its time, the Eidern was very modernly constructed with a continuous main deck without stairs to the foredeck and with bow extensions.As the first archipelago boat, Ejdern received a bow thruster.In 1993, the hull was widened and the ship got a new wheelhouse and new interior.In 1994, the Ejdern was put into river traffic and was then named Älv-Snabben 3. The small water jet-powered Älv-Snabben 1 and 2 that were with the start of the traffic in 1990 were then no longer enough.In 2011 it was upgraded with new chairs in the salon.From having been a reserve boat for the river traffic for a few years, the 3 will once again be a regular boat on the Älvsnabben line when the traffic is increased on 13 December 2015.Älv-Snabben 3, which is built in aluminum, is 27.24 m long and 6.92 m wide.It can take 298 passengers and has 134 seats in the saloon.When the engine was replaced in March 2015, two new Scania DI13s were installed with a total of 800 hp (588 kW) with particle filters.The engines are connected to each fixed propeller.The maximum speed is 13.5 knots.