Just for completeness' sake, the ship is the MS Viking Grace[1]. It's fun seeing the LNG supply vessel AGA Seagas [2] in the early mornings, required since the city of Stockholm did not allow the refueling to happen by tanker truck for safety reasons.

[1] https://en.wikipedia.org/wiki/MS_Viking_Grace [2] http://www.aga.ee/en/products_ren/liquefied_natural_gas/mari...