protected gunboat and armed vehicle protected gunboat (1) comprising a firearm (10) with a barrel (11); said protected gun (1) comprising a body (20) and zenith angle variation means or zenith angle elevation means (21) of the firearm, which causes the firearm (10) to rotate about an x axis of rotation which is orthogonal to a firearm y axis which is defined by the length of the barrel (11), said elevation angle variation means (21) causing the firearm (10) rotate by an elevation angle 237 from the horizontal direction; said gunboat comprising: a pair of protective plates (30,50) mounted above said firearm (10); and a third shield plate (31) mounted under said firearm (10), said plates oriented with their faces being in a plane having an axis that is parallel to said axis of rotation x and orthogonal to that axis. y from the firearm.
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