Garmin GPSMAP® 923xsv With GMR™ 18 HD3 Radome Part Number:010-02366-52
Product Code: GA010-02366-52
The Garmin GPSMAP 923xsv with GMR 18 HD3 radome is a complete radar and chartplotter package: a 9" 1280 x 720 touchscreen with built-in Ultra High-Definition ClearVü and SideVü sonar, supplied with a 4 kW magnetron dome radar.
- GMR 18 HD3 radome: 4 kW, 36 nm maximum range, 20 m minimum, fixed 24 rpm
- 15 m network cable and 15 m power cable supplied with the radome
- 9" touchscreen, 1280 x 720; built-in ClearVü and SideVü, 1 kW CHIRP supported
- MARPA target tracking — requires a heading sensor, not supplied
- NMEA 2000, NMEA 0183 and J1939; 10 to 32 Vdc at the display
- Radome 7 kg, IPX7, 11 to 32 Vdc on a 7.5 A fused feed
Supplied with a worldwide basemap only — chart cartography for UK and Ireland is a separate purchase. No transducer is included. Please talk to us before fitting: the radome ships with a Garmin BlueNet cable and this plotter is a legacy Marine Network device, so a Marine Network adapter cable is needed. Garmin part number 010-02366-52.
What this package does - and what it does not
A GPSMAP 923xsv plus an 18 inch magnetron radome, bought together. Everything below is from Garmin published specifications for part 010-02366-52 and for the GMR 18 HD3.
Included
- ✓Radar in the box, not on the options listA GMR 18 HD3 magnetron radome: 4 kW peak, 36 nm maximum range, down to a 20 m minimum. 15 m of network cable and 15 m of power cable are supplied with it.
- ✓MARPA target trackingTracks selected targets to help avoid collisions. Needs a heading sensor, which is not part of this package.
- ✓Radar overlay on the chartPlus dynamic auto gain, an automatic sea-clutter filter for calm, medium and rough conditions, and timed transmit to cut power draw.
- ✓Built-in Ultra High-Definition ClearVü and SideVüPlus support for 1 kW traditional CHIRP. Transducer required.
- ✓NMEA 0183 as well as NMEA 2000One 0183 receive port and one transmit port, so older DSC VHF, AIS and instruments connect without a gateway.
- ✓10 to 32 Vdc at the displayRuns on a 12 V or a 24 V system. The radome takes 11 to 32 Vdc on its own fused feed.
- ✓Dual-radar supportEach display on the boat can pull from one of two radar sources, which gives redundancy on a larger installation.
- ✓Composite video inputCVBS in on a BNC connector for a stern or engine-room camera.
Not supported
- ✗No detailed charts includedWorldwide basemap only. Garmin Navionics+ or BlueChart g3 for UK and Ireland is a separate purchase - unlike the ECHOMAP UHD2 range, which ships with UK charts loaded.
- ✗TransducerNot supplied. The 12-pin sonar port needs a transducer chosen for your hull.
- ✗Heading sensorNot supplied, and MARPA target tracking will not work without one. Worth budgeting for if collision avoidance is the reason you are buying radar.
- ✗A Marine Network adapter cable is requiredThe GMR HD3 ships with a Garmin BlueNet cable, and the GPSMAP 9x3 is a legacy Marine Network device, so the two do not plug together directly. Check with us before fitting - Garmin does not publish whether the adapter is inside this particular bundle box.
- ✗Fixed 24 rpm and 36 nmThis is the HD3, not the xHD3. The xHD3 models reach 48 nm and spin up to 60 rpm; the HD3 does not, and it does not have MotionScope, bird mode, True Echo Trails or Scan Averaging.
- ✗Magnetron, not solid stateMinimum range is 20 m rather than the near-zero minimum of a solid-state pulse-compression radar.
What you get in the package
4 kW radar included
GMR 18 HD3 magnetron radome, 36 nm range, 5.2 degree horizontal beam, 8-bit true colour imagery and a quiet fixed-speed drive.
9 inch, 1280 x 720
Enough pixels to run the chart with radar overlaid and still read the sonar pane beside it.
Ultra High-Definition scanning sonar
ClearVü and SideVü built in at up to 1.2 MHz, with support for 1 kW traditional CHIRP.
12 V or 24 V
Display takes 10 to 32 Vdc, radome 11 to 32 Vdc on a 7.5 A fused feed.
Reading a Garmin model number
Garmin naming looks impenetrable until someone shows you the pattern. Once you can read it, the whole range makes sense in about ten seconds.
9
Screen size in inches. The x3 range runs 7, 9, 12 and 16 inch.
23
The series marker. Every model in this generation ends 23 - 723, 923, 1223, 1623. It is not a cartography code.
xsv
The sonar suffix: Ultra High-Definition ClearVü and SideVü plus traditional CHIRP.
HD3
The radar. HD3 is the magnetron dome at 4 kW and 36 nm, fixed 24 rpm. xHD3 is the step up - 48 nm, up to 60 rpm and extra target-processing modes.
Naming as published by Garmin for bundle part 010-02366-52.
Which of these sonars will you actually use?
We sell to more cruising sailors than anglers, so here is the honest version rather than the tournament-fishing version.
Traditional CHIRP
Sweeps a range of frequencies in one transmission rather than pinging a single note, which separates targets far more cleanly. This is your depth sounder - water under the keel, and a read on whether the bottom is sand, weed or rock.
Garmin ClearVü
Down-scanning. A thin fore-and-aft slice directly under the hull, rendered almost photographically. Good for picking out a wreck, a mooring block or the edge of a weed bed as you pass over it.
Garmin SideVü
Images a swath of seabed out to port and starboard. Needs slow, straight, steady running to give a clean picture. Genuinely handy hunting for a lost mooring chain; less so on passage.
Ultra High-Definition
Not a fourth sonar - it is ClearVü and SideVü run at higher frequencies. The usual trade applies: more detail, less depth. Designed around shallow, clear inshore water.
923xsv + radar
| Display size | 229 mm (9 in) diagonal, 19.9 x 11.2 cm active area |
|---|---|
| Resolution | 1280 x 720 pixels |
| Interface | Touchscreen |
| Dimensions (W x H x D) | 233.0 x 162.3 x 75.8 mm |
| Weight | 1.6 kg (3.6 lb) |
| Waterproof rating | IEC 60529 IPX7 |
| Input voltage | 10 to 32 Vdc |
| Typical current at 12 Vdc | 1.37 A |
| Max power draw | 40.2 W at 10 Vdc |
| GNSS receiver | 10 Hz. GPS, GLONASS, Galileo |
| Sonar transmit power | 1000 W RMS traditional CHIRP; 500 W RMS ClearVü and SideVü |
| Max depth | 1,524 m (5,000 ft) at 1 kW |
| Ports | Power with NMEA 0183, NMEA 2000, Marine Network, J1939, CVBS video in, 12-pin transducer, micro-USB |
| Memory card | 2 x microSD, 32 GB maximum each |
| Preloaded cartography | Worldwide basemap |
| Radar model | GMR 18 HD3 magnetron radome |
| Radar transmit power | 4 kW peak, 9.38 to 9.44 GHz |
| Radar range | 20 m minimum to 36 nm maximum |
| Radar beam width | 5.2° horizontal, 25° vertical |
| Radome dimensions | 508 mm diameter x 250 mm high |
| Radome weight | 7 kg (15.4 lb) |
| Antenna rotation | 24 rpm, fixed |
| Radar input voltage | 11 to 32 Vdc, 7.5 A fuse |
| Radar power consumption | 15 W standby, 40 W transmitting |
| Radar operating temperature | -25 °C to 70 °C |
| Radar compass-safe distance | 1.2 m |
| Cables supplied with radome | 15 m network cable and 15 m power cable |
| Warranty | 2 years (Garmin EMEA marine policy) |
Fitting it
- Tilt mount with quick-release cradle supplied - drill four 3 mm pilot holes
- Flush mounting is supported, but the kit and template are a separate purchase
- Swivel base is not available for the 9 inch model
- Allow clearance behind the panel for the cradle and connector bundle
- Cut from the template supplied with the flush kit, not from the device dimensions
NMEA 2000 basics
- Linear backbone with T-connectors, one drop cable per device
- A 120 ohm terminator at each end - the most common DIY mistake
- Drop cables 6 m maximum; backbone 100 m maximum
- Power the network from the ignition or a switch, never straight off the battery
- 1 LEN = 50 mA, so a chartplotter at LEN 1 barely loads the bus
Every Garmin chartplotter we stock
The two rows that decide most purchases are Radar capable and Charts included.
| Model | Plus 45cv 4.3 inch keyed | UHD2 55cv 5 inch, keyed | UHD2 65sv 6 inch touch | UHD2 75cv 7 inch, keyed | UHD2 75sv 7 inch touch | UHD2 95sv 9 inch touch | GPSMAP 723 7 inch, no sounder | GPSMAP 723xsv 7 inch touch | GPSMAP 923 9 inch, no sounder | GPSMAP 923xsv 9 inch touch | 923xsv + radar 9 inch + GMR 18 HD3 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| You are viewing | |||||||||||
| Screen | 4.3 in | 5 in | 6 in | 7 in | 7 in | 9 in | 7 in | 7 in | 9 in | 9 in | 9 in |
| Resolution | 480x272 | 800x480 | 800x480 | 800x480 | 800x480 | 1024x600 | 1024x600 | 1024x600 | 1280x720 | 1280x720 | 1280x720 |
| Touchscreen | No | No | Yes | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Built-in sonar | CHIRP + ClearVü | CHIRP + ClearVü | CHIRP + ClearVü + SideVü | CHIRP + ClearVü | CHIRP + ClearVü + SideVü | CHIRP + ClearVü + SideVü | None | CHIRP + ClearVü + SideVü | None | CHIRP + ClearVü + SideVü | CHIRP + ClearVü + SideVü |
| Charts included | BlueChart UK & IE | Navionics+ UK & IE | Navionics+ UK & IE | Navionics+ UK & IE | Navionics+ UK & IE | Navionics+ UK & IE | Worldwide basemap | Worldwide basemap | Worldwide basemap | Worldwide basemap | Worldwide basemap |
| Radar capable | No | No | No | No | No | No | Yes | Yes | Yes | Yes | Radome included |
| NMEA 2000 | No | No | Yes | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| NMEA 0183 | Yes | No | No | No | No | No | Yes | Yes | Yes | Yes | Yes |
| Autopilot control | No | No | Yes | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Marine Network | No | None | Sonar only | None | Sonar only | Sonar only | Radar, sonar, charts | Radar, sonar, charts | Radar, sonar, charts | Radar, sonar, charts | Radar, sonar, charts |
| Video input | No | No | No | No | No | No | Yes | Yes | Yes | Yes | Yes |
| Input voltage | 9-18 V | 9-18 V | 9-18 V | 9-18 V | 9-18 V | 9-18 V | 10-32 V | 10-32 V | 10-32 V | 10-32 V | 10-32 V |
| Weight | 0.7 kg | 0.5 kg | 0.8 kg | 0.68 kg | 1.0 kg | 1.3 kg | 1.3 kg | 1.3 kg | 1.6 kg | 1.6 kg | 1.6 kg |
| Price | £259.83 £308.33 | £284.08 £374.99 | £519.65 £691.66 | £389.46 £499.99 | £608.29 £833.33 | £730.41 £974.99 | £624.99 £749.17 | £749.99 £899.99 | £944.44 £1,133.33 | £1,103.25 £1,287.92 | £2,237.21 |
| View product | Plus 45cv | UHD2 55cv | UHD2 65sv | UHD2 75cv | UHD2 75sv | UHD2 95sv | GPSMAP 723 | GPSMAP 723xsv | GPSMAP 923 | GPSMAP 923xsv | You are here |
The three questions we get asked every time
Three questions come up on the phone almost every week. Here is what we tell our customers.
Why is it sold without a transducer?
Because the UK models we stock are display-only - and because for most of our customers that is the right answer anyway.
- The bundled transducer on overseas versions is nearly always a transom mount, which lifts clear of the water the moment a yacht heels
- Many boats already have depth on the NMEA 2000 bus from existing instruments - the plotter simply reads it
- An existing Garmin transducer can often be reused with an adapter cable
- Buying the display bare and pairing it with a through-hull is a better install, not a compromise
Which transducer, and where does it go?
Three fittings, and the right one depends far more on your hull than on the display in front of it.
- Transom mount - the simplest to fit, no hole in the hull, adjustable afterwards. Unsuitable for a yacht that heels; vulnerable on a drying mooring
- Through-hull - best signal and best at speed, the standard answer for a keelboat. Needs a haul-out, and usually a fairing block on a deep-V or sailing hull
- In-hull - no hull penetration, fits afloat, nothing to snag. Only works through solid GRP, never through a cored laminate, steel or aluminium, and you lose some sensitivity
Which models come with UK charts?
This is the question that catches people out, because the two Garmin ranges answer it differently.
- ECHOMAP UHD2 - Garmin Navionics+ for UK and Ireland is already loaded, with a year of daily updates. Nothing else to buy before your first trip
- GPSMAP - a worldwide basemap only. That is a coarse global outline, so a Garmin Navionics+ or BlueChart g3 card is needed as well as the display
- Vision+ is the optional step up on either range: it adds relief shading, satellite and aerial harbour imagery and 3D views
- Charts keep working when a subscription lapses - you stop receiving updates, you do not lose the cartography
What arrives, and what you will still need
You may also need
Chartplotter FAQs
What exactly is in this package?
How far will the radar see?
Is this the same as the xHD3?
Will the radome plug straight into the plotter?
Where can I mount the radome?
Does the radar need its own power?
Does it come with UK charts?
Can I fit this myself?
Not sure which Garmin fits your boat?
Radar or no radar, 12 V or 24 V, transom or through-hull - a two-minute conversation usually saves a return. We have been fitting marine electronics at Fox's Marina since 1927.
Delivery & Returns
We ship chandlery, clothing and marine equipment around the world and always endeavour to get your products to you as quickly and as cost-effectively as possible. We will dispatch your order as soon as possible, usually the day it is received for orders placed before 2PM. Our stock is controlled such that all items bought online are available in stock with our shop or supplier. If there is any delay due to a product being out of stock, or there is a longer lead time, for example, in the case of ‘Special Order’ items, or having a longer lead time for production, we will contact you, however, this will also be suggested at the checkout. In such cases, we will advise when the product will be delivered (or is available for collection if you have opted to collect from our store).
Standard UK Mainland 1 - 2 Working Days (Excluding Weekends & Bank Hollidays) - £6.95
Next Day Delivery (Please note that orders must be received by 1400hrs for next day delivery. In some instances, we may be able to dispatch later in the day for next day delivery but this cannot be guaranteed. - £9.95
Scotish Highlands & Islands 2 - 3 Working Days (Excluding Weekends & Bank Hollidays) - 14.45
Isle of Wight 2 - 3 Working Days (Excluding Weekends & Bank Holidays) - £9.45
Northern Ireland 2 - 3 Working Days (Excluding Weekends & Bank Holidays) - £14.95
Our policy is simple – you have up to 90 days to return your purchase if it’s not suitable or you’ve changed your mind. Our hassle-free 90-day returns policy applies to most items and is offered in addition to your statutory rights.
Return goods purchased in-store
Simply bring your order confirmation or delivery note and the item you wish to return or exchange, unused and in its original packaging, to our till point in the shop. If you paid by debit or credit card, please ensure you also bring the payment card you originally used to buy the item/s.
Return goods bought online
1. Start your return through the Returns Process in your Fox’s Chandlery online customer account within 90 days of delivery.
2. Once approved, you will receive a Return Authorisation Number (RAN) and shipping instructions.
3. Package the item securely in its original packaging – please do not apply labels or tape directly to the product packaging.
4. Use a tracked courier service and always obtain proof of postage.
5. Please allow up to 14 working days after we receive the goods for your return to be processed.
If you need your item/s to be collected because it's large or heavy please call our online team on +44 (0) 1473 694725.
If you need to add or remove items from your order, change the details of your delivery address or cancel the order completely, please contact our Online Team for advice on +44 (0) 1473 694725 between 0900 and 1730 Monday to Friday or email us. Please quote your order number and order date. If your order has already been dispatched or delivered, then you will need to follow our Returns procedure in the event of any unwanted products.