#25 also gets used to triangulate gunshot in urban area, they got multiple setup around an area to calculate where shots come from, very accurate to a couple of meters.
The dutch barge may well be dutch, but it was evidently a sea-going vessel, not just for canals. A canal barge wouldn't need a bowsprit, and they usually had very low freeboard (low sides, in other words) whereas this vessel has quite a high freeboard.
On the underside of our cabinet in the house we recently bought, built in the 70s. Plastic with metal teeth on one side, very dull. Each side is ~4 inches long.
#25 also gets used to triangulate gunshot in urban area, they got multiple setup around an area to calculate where shots come from, very accurate to a couple of meters.
The dutch barge may well be dutch, but it was evidently a sea-going vessel, not just for canals. A canal barge wouldn't need a bowsprit, and they usually had very low freeboard (low sides, in other words) whereas this vessel has quite a high freeboard.