Self Levelling Radar Mount - Backstay

Product Overview

For Radomes

Our Self-Levelling Radar Mount range ensures your radar stays level with the horizon at all times for optimum antenna performance.

As the boat heels or rolls, the radar is kept horizontal preventing target loss and giving the best possible radar picture.

Our Backstay mounted version positions your radar away from any interference, leaving a clear deck free from obstruction.


  • Hydraulic Damping
    The main levelling unit features a fine turned damping system which reacts to major changes in heel angle of the boat. It is entirely maintenance free and no power is required
  • Bespoke Mounting Pole
    2.6m (8’6”) aluminium mounting pole, supplied in 2 lengths with hidden joiner piece. Cables are routed down a cable channel for a neat install
  • High strength universal base for mounting pole
    Eliminates loading on backstay. base can be deck, transom or chainplate mounted.
  • Suitable for any yacht
    Stainless radome cradle has a fine tune adjustment for backstay angle and the product can be installed on both adjustable and split backstays (see FAQ for further information)
  • Nylon Backstay Bushing Supplied
    Clamps around backstay allowing cable tension to be adjusted
  • Mount Your Radar Higher
    Additional 0.6m and 1.3m lengths available to mount your radome higher.


TIP: When mounting radome forward of backstay, check clearance between radome and mainsail.


Also available in Pole or Mast mounted versions. 


UK marine title Yachting Monthly recently ran a test on the benefits of using our Self-Levelling Radar Mount to improve radar performance. Read the article...

Dimension diagram

Download information on Self Levelling Radar Mount - Backstay
Technical information
How to install your Scanstrut
Scanstrut brochure

Find your part number

To find your Scanstrut part number, please select your marine electronics from the options below and click 'Search'.

GPS / VHF Antenna Mount for Self Levelling Radar MountMore information »

Single mount for installing an additonal GPS/VHF antenna about the radar

Some answers to frequently asked questions...

F.A.Q.'s for Self Levelling Radar Mount - Backstay

Can this product be installed on boats with a split backstay or runners?

Option 1:

If backstay split length is less than 2.7m (8’10”) above the deck, you can mount the system centrally and attach head unit onto the central cable above split. Pole extensions available to raise antenna higher.

This is not really satisfactory in most cases because it will obstruct aft access to the bathing platform.

Option 2:

If backstay split length is over 2.7m (8’10”) above the deck, you can install the mounting pole and head unit parallel to lower backstay.

If the leveller pole is to be installed parallel to one of the ‘splits’, in most cases it will be difficult to correctly orientate the assembly (i.e. with radar and swing axis of leveller parallel with yacht’s centreline) using the supplied pole base bracket.

For a satisfactory install, a custom ‘wedge’ must be fabricated to go between the pole base bracket and deck. Another identical wedge will be required on the underside of the deck or transom to provide a perpendicular face for the nuts and washers. The wedges can be planed to the correct angle from a block of hardwood (teak or mahogany or similar). They need to be independently fixed to the deck with fasteners spaced differently to the pole base bracket, to stop it from squeezing out under compression.
'Split Backstay Fitting Kit’ available soon…….

This installation requires reasonable backstay tension. If you are likely to completely slacken off the stay during sailing, we recommend installing an alternative Scanstrut product (dedicated stern pole or mast mount).

How will the pole base bracket fit to my backstay chainplate?

You will have to drill and tap the chainplate to accept the 2 x M8 fixings that are supplied with the base fitting.

I am worried about my bimini conflicting with leveller installation.

The best thing to do is to check the technical information. This will show the clearance that you require fore of your backstay when installing the product.

My Raymarine dome does not sit level with the boat is at rest – why is this?

Do not worry, your leveller is still working. The dome’s centre of gravity is off centre resulting in a slight ‘list’ to one side.

Since we became aware of this issue we have offset the holes on the mounting plate and so the dome will now sit level. The new plate is available to purchase should you require it, please contact the Scanstrut sales team.

I have a hydraulic backstay adjuster – will I still be able to install the product?

The product is supplied with backstay bushings which clamp around the backstay. These mean that you can still adjust the tension of your backstay without the Self Levelling product getting in the way.

The maximum diameter for backstay adjuster unit is Ø60mm.

My backstay wire is ø6mm, do you do a head unit bush to accommodate this?

Nylon bushes are supplied for backstays from 7mm (0.2”) up to 14mm (0.6”). You will be able to use the 7mm bush for your 6mm dia. Backstay.

Is the Self Levelling Radar Mount suitable for choppy seas or racing conditions?

YES - The structural strength is exceptional in this product. Our design team completed a shock test on sailor Alex Bennett's boat, see what happened at:

If i am using the backstay as an antenna for my HF radio, will installing the Self Levelling Backstay Mount interfere with this?

The kit is supplied with a nylon bush which fits around the backstay before you clamp the levelling head unit to avoid any metallic connection.

Just ensure that you do not fit the pole base onto the backstay chainplate.

General F.A.Q.'s

I have some old electronics, how can I work out if they will fit your products?

If your electronics are not listed in our part number table, please contact Scanstrut as we may be able to assist with compatibility.

Where can I order this product?

Scanstrut products are available worldwide via our network of distributors.

Visit our ‘Where to Buy’ page to find your local dealer.

Can I see this product installed / on display anywhere?

Scanstrut products are displayed at various boat shows throughout the season. Click on 'News & Shows' to view the upcoming boat shows.

Alternatively, find your local dealer on our where to buy page and see if they have a store to visit.

I am upgrading my marine electronics, will I be able to use the same Scanstrut mount?

It all depends on the electronics you are using - please contact Scanstrut for further assistance.

What part no. do I require?

To find your part number, click on the ‘Find your Part Number’ tab.

How much does the product cost?

Pricing for Scanstrut products is available from our network of distributors.

Contact them directly for your local pricing.

I am from the press and I would like more information / pictures on your product.

Good news! Contact our marketing team and they will be happy to help.

Click on 'Contact Us' in the menu bar to send your message.

Share your experience with other customers...

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I would recommend Scanstrut, 4 Aug 2010
By Barry & Dale Keith, Scanstrut Customer I assembled the support (Self Levelling Backstay Mount) and it went very well based on the instructions which were very clear.

I am very happy with the installation and I have had numerous positive comments from others. Thank you very much for your assistance and information which allowed me to plan the attachment to the chainplate. I will certainly recommend Scanstrut to others.

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Superior Products, 4 Aug 2010
By Wayne Gillikin, Proteus Yacht Services First let me say that I am a huge fan of Scanstrut Products. This is especially true of the Scanstrut Backstay Radar Mount which I consider to be far superior to anything on the market.

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Design Excellence, 4 Aug 2010
By Jeanne Socrates \"Nereida\" Scanstrut design excellent equipment supports - I particularly like their self-levelling radar mount on my stern steelwork.

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