Mounting Simrad Halo 20+

gregariousford

gregariousford

New member
Joined
Sep 28, 2025
Messages
22
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Location
Citrus County, FL, Chautauqua County, NY
C Dory Year
2003
C Dory Model
22 Cruiser
Hull Identification Number
CD022094B303
Vessel Name
Láska
Hello, I'd appreciate any info on mounting a Simrad Halo 20+ to my 22' Cruiser. I'm reading that I need a "Forward‑leaning radar mount" I just want to be sure and not order the wrong one. If anyone wouldn't mind helping, I'd be grateful. Is that the mount I need? It's a 6" Forward mount and not exactly sure where on the roof I should mount it although I can guess. :) thank you for any help. (my first C Dory) and I don't want to mess it up :) Greg "Láska" 22'
 
Most installations need a wedge. This makes the radar unit level to the water surface at the boat's normal cruising deck angle. The bow on most boats rises as speed increases (trim tabs can reduce this). If you plan on using the radar mostly at hull speed you'd want a different wedge angle than using it at high speeds. You can use a bubble protractor to see what your boat angle is at your cruising speed and load. Since the roof of the C-Dory has different slopes to it, you need to measure the angle at the mounting point of the radar base. If the roof slopes laterally at the place you plan to mount the radar you need to consider this angle as well.
The wedge can be just a wedge under the unit if you are mounting it right to the roof. If you want or need to you can get a pedestal mount that raises the unit up that has the wedge angle built into it. For radars, higher is usually better, but on a C-Dory unless you put a really tall mast for the radar, the 4-6 inches of a pedestal mount will not make much difference to the radar performance. It would only help get the radar unit above local obstructions.
Depending on the amount to tilt in the wedge, you might see that the radar unit is sitting front down when the boat is at rest. Usually the amount of tilt is not that noticeable.
 
The 6 deg. down angle is good. The vertical beam is 30 degrees so 15 up and 15 down. 6 degrees bow rise is very comon. I. have mounted radars on the front cener line above or just aft of the radio shelf on the cabin ceiling. This allows a good place to run the cable inside directy to the reciever. (A few radars are Wifi,so only power needs be run.). In this case the cable can be shortened or if easier justcoil the escess on the shelf. Run the cable to the starboard aong the top with other wires and then down the "A" pillar to your MFD. I have backed the radar mount with fender washers, or a plate of aumium or plastic to spread the load out.

The major consideration is what else you want to have on the roof--what antennas, and if a dinghy will go there, and how it wil work. I want to keep other antennas at least 3feet away from the radar dome. Although modern radars with solid state insdead of magnatrons are less of a problem.
 
this is my boat. I have a hatch on the roof that opens forward. I'm putting a solar panel between the fishing poles, so the radar would go in front of the hatch. I can move the antenna if it causes an issue. I'm looking at the Forward Leaning 6" mount. Was hoping someone has that setup and it is the correct one to get? Thank you for your help Greg 1770737371681.png
 
I have the 23 Venture, which has a built-in "pad" for the mount molded into the roof. But it looks like the same place that you are planning on putting your setup. I went with the Seaview mount and am extremely impressed with the quality and construction. It is sealed up very well and I have never had a leak of any kind. Mine leans rearward, but they also have a model that leans forward. They have different top plates for different radars. you can add a light-bar or other items. I have their light bar with a GPS antenna mount together. Let me know if you have any more questions.

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Hi Greg,

Nice boat!!!!!

Have you thought about a radar arch? This would give you some extra clearance on the roof for the solar panels and give you a mounting point for the radar. I have one on my boat. It keeps it up high and works well. You could also add rocket launchers for the fishing rods.
 

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Joefairbanks said:
I have the 23 Venture, which has a built-in "pad" for the mount molded into the roof. But it looks like the same place that you are planning on putting your setup. I went with the Seaview mount and am extremely impressed with the quality and construction. It is sealed up very well and I have never had a leak of any kind. Mine leans rearward, but they also have a model that leans forward. They have different top plates for different radars. you can add a light-bar or other items. I have their light bar with a GPS antenna mount together. Let me know if you have any more questions.

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Xtraplus18 said:
Hi Greg,

Nice boat!!!!!

Have you thought about a radar arch? This would give you some extra clearance on the roof for the solar panels and give you a mounting point for the radar. I have one on my boat. It keeps it up high and works well. You could also add rocket launchers for the fishing rods.
Click to expand...
I did, was concerned about storage. I just ordered, Simrad Halo 20+, Seaview AM5M1 Modular Mount, SeaView ADA-S1 Modular Mount Plate. hope this is it lololol :P
 
gregariousford said:
I did, was concerned about storage. I just ordered, Simrad Halo 20+, Seaview AM5M1 Modular Mount, SeaView ADA-S1 Modular Mount Plate. hope this is it lololol :P
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and just purchased a Hella NaviLED 360.
 
Xtraplus18 said:
Hi Greg,

Nice boat!!!!!

Have you thought about a radar arch? This would give you some extra clearance on the roof for the solar panels and give you a mounting point for the radar. I have one on my boat. It keeps it up high and works well. You could also add rocket launchers for the fishing rods.
Click to expand...
that's a beauty :)
 
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