Photochrom or photochrome prints are a type of color prints that were very popular between 1890 and 1910. The photochrome process was mainly used to print postcards. Below is a collection of such old historic photos from harbors around the world. A second page shows postcards that focus more on sailing boats and steamers.
Kingstown in County Dublin, Ireland (detail)
I consider this a classic example of good composition for landscape photography: an interesting foreground is combined with a main topic in middle while the buildings keep the background relevant. The contours of the hills in the distance add to the atmosphere.
Steamers in the harbor of Caen, France
A sailing ship is pulled into the harbor of Littlehampton, England
Fisher boats in the harbor of Abbazia, Austro-Hungary
The composition of this picture is pretty funny as it gives the impression that the ships are locked up in this tiny harbor.