Garmin GPSMAP® 923 Non-sonar with Worldwide Basemap
Product Code: GA010-02366-00
The Garmin GPSMAP 923 is a 9" touchscreen chartplotter with a 1280 x 720 in-plane switching display — the sharpest panel at this size in the range. It has no built-in sounder, but it takes radar, connects to older NMEA 0183 instruments and runs on 12 V or 24 V.
- 9" touchscreen, 1280 x 720, in-plane switching display
- No built-in sonar — networked sonar module required
- Radar capable over the Garmin Marine Network
- NMEA 2000, NMEA 0183 and J1939 engine network
- 10 to 32 Vdc — suits 12 V and 24 V systems
- Composite video input, two microSD slots, built-in Wi-Fi
- 1.6 kg, IPX7
Supplied with a worldwide basemap only. Garmin Navionics+ or BlueChart g3 cartography for UK and Ireland is a separate purchase. Garmin part number 010-02366-00.
What this model does - and what it does not
This is the non-sonar GPSMAP at 9 inches. A navigation and networking display: no sounder inside, but radar, NMEA 0183 and a 10 to 32 V supply all included. Figures from Garmin published specifications.
Included
- ✓Radar capable over the Garmin Marine NetworkRadar runs over the network port, so a GMR radome fits to this model even though it has no sounder.
- ✓1280 x 720 on a 9 inch panelGarmin describes these as in-plane switching displays. More pixels than the 9 inch ECHOMAP UHD2, which is 1024 x 600.
- ✓Sonar over the networkAdd a Garmin sonar module or share a sounder from another networked Garmin unit, and this display shows sonar without having one built in.
- ✓NMEA 0183 as well as NMEA 2000One 0183 receive port and one transmit port on the power harness, so older DSC VHF, AIS and instruments connect without a gateway.
- ✓10 to 32 Vdc inputRuns on a 12 V or a 24 V system with no converter.
- ✓Composite video inputCVBS in on a BNC connector for a stern or engine-room camera.
- ✓Autopilot controlDrives a compatible Garmin autopilot over the network.
- ✓GPS with GLONASS and GalileoSelectable in the settings, with WAAS or EGNOS differential correction.
Not supported
- ✗No built-in sounderThis is the point of the model. There is no transducer port - sonar needs a networked module or a second unit that has a sounder. If you want sonar in the display, choose the 923xsv.
- ✗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.
- ✗No HDMI outputHDMI is on the GPSMAP 12x3 and 16x3 only. Video is composite in, not out.
- ✗microSD limited to 32 GBPer card, across both slots.
- ✗Third-party cameras need an isolatorA FLIR or similar camera must go through a Garmin PoE Isolation Coupler, part 010-10580-10, or the network is damaged.
What you get on a 9 inch screen
9 inch, 1280 x 720
The sharpest panel in the range at this size, and the reason to choose it over a 7 inch if the helm has the space.
A hub, not a sounder
Garmin Marine Network for radar, networked sonar and chart sharing, plus NMEA 2000, NMEA 0183 and J1939 for engines.
Multi-constellation GNSS
GPS with selectable GLONASS and Galileo, and WAAS or EGNOS differential correction for European waters.
12 V or 24 V
A 10 to 32 Vdc input range, so it drops into a 24 V boat without a converter.
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, so a 723 and a 923 are the same plotter at two sizes.
23
The series marker. Every model in this generation ends 23 - 723, 923, 1223, 1623. It is not a cartography code, which is where GPSMAP naming differs from ECHOMAP.
No suffix after the number is the part that matters here: it means no built-in sounder. Add xsv and you get Ultra High-Definition ClearVü and SideVü plus traditional CHIRP. Naming as published by Garmin for part 010-02366-00.
GPSMAP 923
| Display size | 229 mm (9 in) diagonal, 19.9 x 11.2 cm active area |
|---|---|
| Resolution | 1280 x 720 pixels |
| Display type | WXGA, in-plane switching |
| Interface | Touchscreen |
| Mounting options | Bail or flush |
| Dimensions (W x H x D) | 233.0 x 162.3 x 75.8 mm |
| Clearance behind unit | 33.2 mm |
| Weight | 1.6 kg (3.6 lb) |
| Waterproof rating | IEC 60529 IPX7 |
| Operating temperature | -15 °C to 55 °C |
| Input voltage | 10 to 32 Vdc |
| Typical current at 12 Vdc | 1.34 A |
| Max current at 12 Vdc | 1.78 A |
| Max power draw | 22.0 W at 10 Vdc |
| Fuse | 6 A, 125 V fast-acting |
| GNSS receiver | GPS with selectable GLONASS and Galileo; WAAS or EGNOS differential |
| Built-in sonar | None - networked sonar module required |
| Ports | Power with NMEA 0183, NMEA 2000, Marine Network, J1939, CVBS video in, micro-USB |
| NMEA 2000 | Yes - LEN 2 at 9 Vdc |
| NMEA 0183 | Yes - one receive and one transmit port |
| Wi-Fi | 2.4 GHz, 17.6 dBm max |
| Memory card | 2 x microSD, 32 GB maximum each |
| Waypoints and routes | 5,000 waypoints, 100 routes |
| Tracks | 50 saved tracks, 50,000 track points |
| Preloaded cartography | Worldwide basemap |
| Optional chart support | BlueChart g3, BlueChart g3 Vision, Garmin Navionics+, Navionics Vision+ |
| 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 | £311.80 £370 | £340.90 £449.99 | £623.58 £829.99 | £467.35 £599.99 | £729.95 £1,000 | £876.49 £1,169.99 | £749.99 £899 | £899.99 £1,079.99 | £1,133.33 £1,360 | £1,323.90 £1,545.50 | £2,684.65 |
| View product | Plus 45cv | UHD2 55cv | UHD2 65sv | UHD2 75cv | UHD2 75sv | UHD2 95sv | GPSMAP 723 | GPSMAP 723xsv | You are here | GPSMAP 923xsv | 923xsv + radar |
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
Supplied
- GPSMAP 923 chartplotter
- microSD card preinstalled
- Power cable
- NMEA 2000 T-connector
- NMEA 2000 drop cable (2 metres)
- Bail mount kit with knobs
- Flush mount kit with gasket
- Protective cover
- Trim piece snap covers
- Documentation
No transducer and no sounder - this is the non-sonar model.
You may also need
Chartplotter FAQs
Does this have a fishfinder in it?
Does it come with UK charts?
Why choose this over a 95sv that has sonar in it?
Can I add radar?
Will it run on a 24 volt boat?
Can I connect my old NMEA 0183 instruments?
Can I fit it 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.
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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.