Cruiser2B
Well-Known Member
Are you suggesting that commercial radars are incapable of distinguishing contacts in fog? Or only when the vessel is going fast? I certainly agree that a dedicated radar watch should have been set in the fog.Nothing to do with how fast the radio waves are, more the discrimination of the set; and it would certainly require a dedicated officer with eyes glued to it, even if the set was good enough.
Its nothing to do with the speed of the radio waves, its more to do with the reaction time of the person monitoring the radar. They have to notice the target and assess it as a threat or not and then make the right decision. If the target is travelling down the screen at 37 knots (more or less the reciprocal of your speed) then you are severely reducing the time to evaluate the situation. Slowing down gives you more time to work out what is happening on the screen.
With a properly tuned radar, a small contact should be picked up at 6 miles or more. Certainly a metal-hulled fishing vessel should have painted clearly beyond that. Even at 37kts, it would still give about 10 minutes to sort out the situation and deal with it. If it was clear visibility, a small vessel might only be clearly apparent at 6 miles or so - if they are able to go 37kts in clear visibility and deal with contacts with a 10 min TCPA, then surely it is possible to do it in reduced vis.