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Garmin GPSMAP 740/740s Accessories

Garmin accessories for the Garmin GPSMAP 740 and GPSMAP 740s marine chartplotters. All of the GPSMAP 740 accessories available to purchase from ActiveGPS are genuine Garmin parts.

Click the 'More Details' link below for each accessory to read more about it.

Garmin Transducers and BlueChart marine charts are also available for use with the Garmin GPSMAP 740s. For further information please click here or scroll down this page past the GPSMAP 740 accessories below.

This heavy duty 7-inch cover fits the Garmin GPSMAP 740 and GPSMAP 740s chartplotter head unit snugly and protects the screen from getting scratched and guards against the harsh marine environment when not in use. More Details

Garmin GPSMAP 740/740s Protective Cover - £14.99

Garmin GPSMAP 740 gasket kit enables you to flush mount your GPSMAP 740 or 740s chartplotter. Flush mount kit includes hardware, installation instructions and a template. More Details

Garmin GPSMAP 740/740s Flush Mount Gasket - £12.99

Surface mount your Garmin GPSMAP 740 chartplotter using this genuine Garmin bail mount with knobs. To help achieve the best viewing angle of your GPSMAP 740 or GPSMAP 740s 7-inch display the mount also tilts for optimum viewing. More Details

Garmin GPSMAP 740/740s Bail Mount with Knobs - £17.99

Power or connect your Garmin GPSMAP 740 chartplotter to a network with this power/data cable. More Details

IMPORTANT: This cable is for GPSMAP 740 models WITHOUT a sounder, if you have a GPSMAP 740s model with sounder and require a cable with sounder/transducer connectivity you need to buy the accessory below.

Garmin GPSMAP 740 Power/Data Cable (19-pin) - £24.99

Power or connect your Garmin GPSMAP 740s chartplotter to a network with this power/data cable. This cable also includes sounder/transducer connectivity. More Details

Please note: This cable is only required if you own the GPSMAP 740s. If you own the GPSMAP 740 without sounder you can purchase the cable above.

Garmin GPSMAP 740s Power/Data/Sonar Cable (19-pin) - £29.99

Adding a Transducer to your GPSMAP 740s

Garmin transducers are fully compatible with the Garmin GPSMAP 740s and will provide you with a live 'view' beneath your boat. We stock the very latest Garmin transducers which can provide you with an image of not only what lies directly below but towards the front or sides of your boat with features such as SideVu, DownVu and RealVu 3D Forward.

To learn more about Garmin transducers please see our Garmin Transducer Buyer's Guide, the page also features an online form, which after completing we will email you a link to compatible transducers that are all fully compatible with your Garmin GPSMAP 740s and the boat in which you will use both nautical devices on.

Find your compatible transducer here.

Pictured below, transom mounted transducer, thru-hull transducer and in-hull transducer.

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Adding a Garmin BlueChart to your GPSMAP 740/740s

By adding either a Garmin BlueChart g2 or BlueChart g2 Vision marine chart on SD/microSD Card to your Garmin GPSMAP 740/740s chartplotter will provide the detailed digital marine charts on the screen of your device.

Garmin BlueChart g2/g2 Vision marine charts are available in up to four different sizes, these are: Small, Regular, Large and Extra Large coverage. Please see the sample charts below, which all include Plymouth:

The larger the chart coverage the more area is covered without the need to change or buy additional charts. We suggest buying the chart(s) that provide the coverage for your sailing, fishing or yachting needs.

Charts are available to buy from ActiveGPS for the waters around the UK, Western Europe and Mediterranean coasts. Find your Garmin BlueChart map.

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Why buy from us?

We are official Internet Retailers of Garmin products and we sell genuine Garmin accessories and maps. We purchase from the Garmin UK distributor. We do not buy on the grey market and we do not sell counterfeit products. You can rest assured that by purchasing from ActiveGPS you will receive the full support of Garmin.

Page last updated: 13th June 2017

Buying a Marine GPS?

Garmin BlueCharts

Garmin Transducer Buyer's Guide

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We offer economy and premium delivery. Click here for further info. All options also appear at the basket pages.

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