The popular 'X' range screen from AG Neovo used onboard many fishing vessels. This 17" sized unit in 4:3 aspect ratio is perfect for most boats, for use with black box radars, sounders, and plotters.
Max resolution is 1280 x 1024 which is as small as you will probably want the dots to be onscreen unless you're sitting very close to the screen!
It has inputs for both VGA and DVI-D, commonly used by PC based plotters, radars and sounders. There are also inputs from composite video and s-video, which could be used to display a CCTV camera in the corner of the main display using PIP (picture in picture).
The screen runs off 12v dc, being supplied with a power adapter to drop mains AC down to 12v dc. If mains AC onboard is not readily available perhaps use a DC-DC converter to convert 24-28v dc to 12v dc, or 11-17v dc to 12v dc.
Is supplied with a very strong desktop mount, although if recessing and front fixing we have made our own stainless steel brackets to enable front fixing.