Originally Posted by Chopppywaters
And is the dome that will be attached to the A-frame heavy enogh to screw up performace? In other words should i get the radar?
Its a Furuno 1623
Hi Choppy waters how big is your boat that you are thinking of sticking the radar on .
Height of the scanner is important as works on height of eye to the horizon principle as to how far it can see and also the height of the target it is trying to see.
The size of the scanner is another factor to consider the bigger the scanner the narrower the beam width the more accurate a picture you will see.and vice versa .
How you set it up is important i.e North up Head Up or Course up, are targets relative bearings or true bearings in relation to us, stabilised and unstabilised picture and if using ARPA are you ground or sea stabilised as either will give a different picture to interpret.
Clutter (sea and rain) controls can be manually adjusted or you can use auto function depending on how confident you feel.
Plotting can be difficult on a rib due to its motion a clear plastic sheet fixed to the screen allowing you to use dry wipe pens is useful so you can if the target is moving down the EBL and a risk of collision exists.
Two articles have appeared in Rib Intl re Radar both good.The reality on a small rib moving at speed makes plotting difficult for collision avoidance. IRPCS rule 19 Conduct of vessels in restricted visibility states a safe speed adapted to the prevailing conditions and conditions of restricted visibility. when we slow down we change the aspect of the scanner on ribs we squat down at the back this will reduce our range for detecting targets unless your scanner is mounted over the helm position or high enough . In my opinion they are great kit for navigation on larger vessels on small ribs some of their capabilities can be reduced when we slow down for restricted visibility due to not getting enough height for the scanner.
any way thats my 2p worth let us know what you decide .