[Paladin2]

A: The boats have nice lines.

B: There are curious looking bullseye devices in some of the windows on the bridge. I have seen similar on locomotives involved in snow removal. What are they called, who manufactured them and what, exactly, do they do?

[jimtorr]

I believe they are a type of windshield wiper. I’ve seen them on many other water craft. Perhaps they spin the water off?

[orionrising]

the circles on ships windows are a circular windshield whipping device. they spin to keep the water off

[Hootowl99]

Those are marine clearview ports. You'll see these on ships and other commercial vessels.

Below is one manufacturer's website, which has a video of the operation on the page. Essentially, the glass spins at a rapid rate flinging rain, spray, snow right off the glass so you have a clear port looking out into the storm. The ultimate windshield clearing device.

http://www.solarglide.com/products/wipers/sg-clearview/marine-circular-wiper