I thought that the land/sea mode was done away with? 
they just changed the commands to
shift-Q and
ctrl-Q and added a slewable sight, other than that it works the same way as it did before.
Got it. How do you implement the crosshairs and small yellow icon on the horizon?
the yellow sight shows where the ship's director calculates the shells will land (it also moves up and down with range so you can get a rough distance by lining up the base of the sight with the target, at least at sea level. very useful for ship vs ship gunnery.)
the red sight is slewable, which is useful if you cant see the target while fully zoomed in (ie. from a high shore battery), and for leading moving targets. eg. if 2 fleets are running parallel, in sea mode line up the target on the yellow sight and fire. slew the red sight to where the shells land, then move the guns so the red sight is on the target. now the shells should land on your target.
