Everything started from Saint Petersburg. We boarded a big "River-liner" similar to this one. The cruise took us through Karelia to the Lakes Ladoga and Onega and on the river Svir. Click on the map for a bigger picture. See Finland and Sweden? See Moscow? Now you have located the area. I have another page with more maps. The latitude of St Petersburg is a little North of that of Stockholm, 60°N. And we went further North. By end June, there was only about two hours of night, and it was not very dark.
Click on the thumbnails below to open each photo in its own window.
Here is a small picture of the M/S Saint Petersburg (from their web page) and its characteristics:
5-deck (including sun deck)
Length - 125 m; Beam - 16.7 m
Height - 13.2 m; Draught - 2.8 m
Speed - 14 knots (26 km/h)
Displacement - 3 545 tons
Map of the ship You see from the shape of the hull that this large ship is not an ocean-going liner: the freeboard is very low.