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BigWalleye · 04-02-17, 09:38 PM

I have been on a 35-foot sailboat in the Caribbean and Chesapeake Bay at night, and it is certainly possible to see freighters at night with the unaided eye. It is harder to see them with, say, binoculars ( or periscope optics) because their aperture is much more restricted. Even high-dollar "night glasses" require much brighter ambient. So dimming the periscope FOV might be a realistic approach, IMO.

04-02-17, 09:38 PM	#3
BigWalleye Sea Lord Join Date: Jul 2012 Location: On the Eye-lond, mon! Posts: 1,987 Downloads: 465 Uploads: 0	I have been on a 35-foot sailboat in the Caribbean and Chesapeake Bay at night, and it is certainly possible to see freighters at night with the unaided eye. It is harder to see them with, say, binoculars ( or periscope optics) because their aperture is much more restricted. Even high-dollar "night glasses" require much brighter ambient. So dimming the periscope FOV might be a realistic approach, IMO.