Båtservice offers guided tours by boat in Oslo, all year round.
The tours depart from City Hall Pier 3.
Fjord Sightseeing: 2-hour boat tour (all year)
Norwegian Evening on the Fjord: 3-hour boat trip with prawn buffet (summer)
Jazz or Blues Cruise: 3-hour boat trip with prawn buffet (summer)
Oslo Grand Tour: 7-hour bus/boat tour (summer season)
Tickets are available at Båtservice's ticket office on City Hall Pier 3, at Oslo Visitor Centre and at nyc.no.