If you Google the name of the vessel 'Rutli' you can go to a page on Wikipedia...
Rütli (Grütli in French and Italian) is a mountain meadow on Lake Lucerne, in the Seelisberg municipality of the Swiss canton of Uri. Here the legendary oath of the Rütlischwur first occurred and is remembered as the turning-point in the pursuit of independence. Every August 1st, on the Swiss National Day, the oath is re-enacted to commemorate the forming of the Old Swiss Confederacy.
Land forming the Rütli meadow was bought by the Schweizerische Gemeinnützige Gesellschaft in 1859 in order to preserve its state and, among other reasons, to prohibit the construction of a hotel at the historical site. This non-profit company turned the Rütli over to the government as an inalienable gift.
Since 1991, Rütli has also been the start of the "Swiss Way" hiking trail created to celebrate the 700th anniversary of Switzerland.
On 25 July 1940, General Guisan used the site for his speech, now remembered as the "Rütlirapport", to the entire officer corps of the Swiss army in which he outlined the Reduit strategy and his aim never to surrender if invaded (see Switzerland during the World Wars).
That coupled with the Swiss flag on the bow suggests to me that this vessel may have been a Lake Lucerne cruiser?
Malc