Welcome aboard the “Kosterbåtarna”

We operate passenger and cargo ferries to the Koster islands all year round.


The passenger ferries depart from the “norra hamnen” in Strömstad at the main square (torget). Street adress Ångbåtskajen, Strömstad. Here you will also find a waiting room.

Nearby you also find the city tourist information, Strömstad infocenter. Check out their website HERE

Our time-tables in Swedish are available in the link below, or you can check out the Västtrafik travel-planner in English. Just enter the stops you wish to travel between for the next departure (e.g. Norra Hamnen, Strömstad to Koster (stops will appear or just choose KOSTERÖARNA to view next departure)




Tickets can be bought onboard (card only) or in machines on the quay in Strömstad (card only). 

Prices vaild from April 2023 until further notice:

Youths (7-19 years) One way: SEK 62, return SEK 104

Adults (20 years -)  One way: SEK 84, return SEK 140

Children 0-6 years are free of charge

Buy your ticket with our app!

Download the «Västtrafik To Go» application to your phone!

The ticket is valid for a one way journey – but you get the round-trip discount.

Adult = 70kr

Youth 7-19 years = 52kr 

Search trip from ”Strömstad Norra Hamnen” to ”Koster” to find your ticket, right price = right ticket! (the ticket will be valid to any stop on both islands)  The app will remember your previous tickets which will make repeated voyages more convenient.

The ticket must be activated before departure and is valid for 180 minutes.  The deck-hand will validate the ticket during the journey. The telephone must be switched on and connected to the internet for the ticket to be valid!

Other questions?

For chartering or cargo ferries please contact the shipping company (Koster Marin AB) via email info@kostermarin.seor telephone +46 526 20 110