Waxholmsbolaget (Waxholm Ferries) offers the Båtluffarkortet (Inter Skerries Card), a discount pass for its extensive commuter network of archipelago boats; the price is SKr 420 for five days of unlimited travel. The Strömma Kanalbolaget operates a fleet of archipelago boats that provide excellent sightseeing tours and excursions.
Strömma Kanalbolaget (08/12004000. www.stromma.se.)
Waxholmsbolaget (08/6795830. www.waxholmsbolaget.se.)