Humminbird Helix 8 Chirp Mega SI Plus GPS G3N Fishfinder Chartplotter

Delivering up to 3X the output of standard Side Imaging®, MEGA Imaging technology took fish finding into the megahertz frequency for the very first time. Humminbird improved this technology even further by extending the depth range and expanding the side coverage areas, all while improving the crystal clear imagery.

See the underwater world like never before with the unprecedented clarity of new Humminbird MEGA + Imaging, available on select HELIX® models. MEGA + Side Imaging and MEGA+  Down Imaging is available on HELIX 8, 9,10 and 12 MEGA + SI CHIRP GPS combo models.

The HELIX 8 CHIRP MEGA SI+ GPS G3N features an 8" display, MEGA Side Imaging+, MEGA Down Imaging+ and Dual Spectrum CHIRP Sonar. Includes GPS mapping, built-in Bluetooth, Ethernet networking capabilities, AutoChart Live with depth, vegetation and bottom hardness mapping. Top it all off with Humminbird Basemap built-in.

• 455kHz Side Imaging provides 800 ft of side to side coverage.
• 455kHz Down Imaging works to a depth of 400 feet. 
• 1.2 MHz Side Imaging provides 400 feet of side to side coverage. 
• 1.2 MHz Down Imaging works to a depth of 200 feet

*Optional 50 kHz transducers available for extreme deepwater.

• NEW MEGA Side Imaging+: See the world below like never before with crystal-clear viewing out to 200 feet on either side of your boat. You'll unlock more fish and structure with 20% more detail than MEGA Side Imaging Sonar.
• NEW MEGA Down Imaging+: Get unprecedented underwater clarity with coverage down to 200 feet below your boat. You'll unlock more fish and structure with 20% more detail than MEGA Down Imaging Sonar.
• Dual Spectrum CHIRP: Before you cast, know what's down there thanks to long, well-defined fish arches, and a clear view of fish-holding structure and the bottom. Powered by our proprietary, Low Q CHIRP transducer, Dual Spectrum offers two ways to search: wide mode for maximum coverage and narrow mode for maximum detail.
• SwitchFire Sonar: Take command of how your sonar returns appear. With two display modes, you can add or remove detail, account for water depth, temperature and turbulence, even watch lure presentations - all at the push of a button.
• AutoChart Live: Create real-time maps of your fishing spots, with access to patented Humminbird® LakeMaster® features. Map depth contours, bottom hardness and vegetation as you drive your boat, with eight hours of built-in recording time.
• Ethernet Networking: High-speed Ethernet allows you to build a powerful, professional-grade fishing system. Easily connect multiple fish finders, or upgrade to add-on technologies like Minn Kota i-Pilot Link, 360 Imaging and CHIRP Radar.
• Bluetooth: Enable features like wireless software updates from the Humminbird FishSmart App and also keep your phone out of the water and in your pocket by displaying notifications on your Humminbird. Additionally, you can take control of your most-used features with an optional Bluetooth remote (RC2).
• LakeMaster Compatible: Upgrade to the unrivaled accuracy and detail of Humminbird LakeMaster maps. From easy-to-read contours, to highlighted depth ranges, to scrollable lake lists, you'll have all the tools you need to make every moment count
• Includes transducer and mounting hardware, power cable, gimbal mounting bracket.

Features

• Sonar-Standard Dual Spectrum CHIRP, MEGA Down Imaging+, MEGA Side Imaging+
• Interface Keypad Control
• Memory Card Slot Dual Micro SD
• Screen Snap Shot Included
• Sonar Recording Included
• Internal GPS Receiver
• Temperature Alarm and Graph
• Radar Compatible
• Minn Kota i-Pilot Link Compatibility
• 360 Imaging Compatibility
• Compatible with Navionics+ & Platinum+ charts
• AIS Compatible
• Call notifications when paired to a smartphone via Bluetooth
• Transom Mount Transducer Included: XM 9 HW MSI T

Specifications

• Display Size – Diagonal 8"
• Display Pixel Matrix 1024H x 600V
• CHIRP - Frequencies Supported  Full Mode (150-220 kHz), Narrow Mode (180-240 kHz), Wide Mode (140-200 kHz)
• Sonar-Frequencies Supported 50/83/200/455/800 kHz & 1.2 MHz
• Depth-Sonar 1,200 ft (standard transducer), 3,500 ft (optional 50 kHz)
• CHIRP - Imaging-Frequencies Supported 455 kHz DI+ (435-535 kHz), 455 kHz SI+ (405-505 kHz), 800 kHz DI+ (800-860 kHz), 800 kHz SI+ (780-840 kHz), MEGA DI+ (1100-1200 kHz), MEGA SI+ (1050-1175 kHz)
• Depth-Down Imaging 125 ft (800 kHz), 200 ft (MEGA), 400 ft (455 kHz)
• Range-Side Imaging (Side-To-Side) 800 ft (455 kHz), 250 ft (800 kHz), 400 ft (MEGA)
• Power Draw 1 Amp
• Power Input 10.8-20 VDC
• Power Output Peak-to-Peak 8000 Watts
• Power Output RMS 1000 Watts
• Connections : NMEA 0183 (with optional cable), Ethernet, Bluetooth
• Waypoints, Routes, Tracks/Point: 2,750, 45, 50/20,000
• XM 9 HW MSI T Transom mount Transducer cable length: 20ft
• Dimensions: 168.22 H x 304.75 W x 100.03 D mm
• IPX Rating: IPX7 Waterproof/Submersible @ 1 m for 30 minutes

In the box

• Helix 8 G3N Chirp Mega+
• XM 9 HW MSI T Transom mount Transducer
• Mounting Bracket & Knobs
• Power Cable
• Documentation
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This item has been discontinued and is not available to purchase.

Royal Mail Service Update: Please be aware when choosing Royal Mail as your preferred delivery method, your delivery time may be impacted by ongoing strikes and may take up to 20 working days. If your order is time critical we suggest choosing a courier or Next Day Service

Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible.

International Orders: Due to delays we have had to suspend our international delivery options. 

UK Standard Delivery

• UK Mainland 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 7-10 working days for orders under £50.00
• UK Mainland up to 25Kg £5.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• UK Mainland 25Kg+ Price on request
• UK Mainland Next Day 0 - 25Kg £9.95 Courier service with signature, orders must be placed before midday
• Northern Ireland, Highlands & Islands 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 5-7 working days for orders under £50.00
• Northern Ireland, Highlands & Islands 1 - 25Kg £10.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• Northern Ireland, Highlands & Islands 25Kg+ Price on request
• Channel Islands 0 - 2Kg (small jiffy) £5.95 Royal Mail Service Despatch within 3- 5 working days, delivery in 5-7 working days for orders under £50.00
• Channel Islands 1 - 25Kg £13.50 Courier service with signature. Despatch within 3- 5 working days, delivery in 5-7 working days
• Channel Islands 25Kg+ Price on request

UK Exceptional Delivery

• UK Mainland; Antifoul & paints £5.95
• UK Mainland; Inflatable dinghy £10.00
• UK Mainland; Liferafts £17.50
• UK Mainland; Flares £49.95
• Northern Ireland, Highlands & Islands; Antifoul & paints £9.95
• Northern Ireland, Highlands & Islands; Inflatable dinghy price on request
• Northern Ireland, Highlands & Islands; Liferafts price on request
• Northern Ireland, Highlands & Islands; Flares not available to ship at this time
• Channel Islands; Antifoul & paints £13.50
• Channel Islands; Inflatable dinghy price on request Channel Islands; Flares not available to ship at this time

For further delivery information click here.

Standard Returns

If you are not entirely happy with your purchase, we will exchange or refund your goods in full, provided that the items are returned within 14 days of receipt.*

Please check the condition of goods on arrival - we are unable to accept goods damaged during shipping after 14 days.

Returned goods must be packaged securely, with all original packaging undamaged and in a saleable condition i.e. shoe boxes must be in the same condition as when received.

Goods must be unused and security seals intact.*

If you would like to return goods because they were ordered incorrectly or if clothing does not fit, return postage will be at your expense. If you would like us to replace the goods with another size or colour, we will charge carriage on the replacement.

Please be aware that some navigational and safety products may be dated, and as such a full refund may in some cases not be possible. If you are purchasing dated navigational charts we suggest you contact us for more information.

Faulty Goods

If you receive your goods and believe them to be faulty, please contact us straight away with a brief description of the problem. If we require you to return the product for a replacement, we will send you a pre-paid Royal Mail label for delivery back to us. Unfortuantely we cannot send the courier back to collect the items.

Returning goods to Force 4 is easy!

1. Please contact us by ringing 0345 1300 710 or email on [email protected]. This way we'll be able to determine whether you would like to return the product for a refund or whether you'd like to exchange the product. We are unable to process the return of faulty goods that we're not expecting.
2. We'll then give you a returns number. This returns number will need to be clearly marked on the outside of your parcel so it can be identified on arrival. Please note, failure to mark a returns reference number on the outside of your parcel may result in a delay in processing your return.
3. Don't forget your proof of postage, just in case!
4. Once we receive the item we'll be able to proceed with a refund or an exchange.

*this excludes faulty goods with manufacturers defects. If goods are found to be faulty during use, after the returns period, please just give us a ring on 0345 1300 710 and we'll be happy to help.

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