We visited the museum during a boat trip on the lakes of Friesland in July 2018. The museum buildings are in the town center of Sneek, within walking distance of the yacht harbours.
Besides the town's history the museum's topics were coastal trading, fishing and ship building of the area.
Unfortunately most exhibits were behind poor glass with high reflection. It was difficult to get a clear view and taking photographs was difficult, but I show some exhibits I was very impressed by. It is a fine museum and very much worth a visit.
Here are some pictures of a model of a 18th century koff ship. A koff was a popular trader at the North Sea coast of Netherlands, Belgium and Germany. On smaller boats they often put decorations (figureheads) on top of the rudder blade (roerklik, roerkop, roerleeuwen) and on the mast tops (mastwortel). There also was a fine model of a 1890 yacht.
If you click on a photo you will get that photo in high resolution. Press F11 to minimize navigation bars of the browser and have a larger screen with the photos.