This is a generic 1/300 WWII armed trawler based on numerous British examples (about 45m long), for coastal naval wargames. It could also plausibly be used a german
...さらに表示 Voorpostenboot based on a vessel seized during the invasion of the channel isles or French ports.
No claim is made as to the accuracy of the model, as this is not based on a single vessel.
3-inch guns should be printed with the barrel pointing upwards (roughly vertical) and will need support on an FDM printer