What’s the difference between a chartplotter and a fishfinder?

A chartplotter shows your GPS position on electronic charts for navigation. A fishfinder uses sonar to show what’s below the boat — depth, bottom structure, and fish. Many modern units combine both, and networked systems can share data across displays.

Do I really need a VHF radio?

For safety, yes. A VHF radio is the primary way to reach other vessels and the Coast Guard, and a DSC-equipped VHF connected to GPS can transmit your position in an emergency. It’s more reliable than a cell phone offshore and is the recognized standard for marine distress calls.

What is NMEA 2000 and do I need it?

NMEA 2000 is a standard network that lets marine electronics — chartplotter, sonar, autopilot, sensors, engine data — share information over a single backbone. It’s not required for a simple setup, but it makes multi-device systems far easier to expand and integrate.

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Raymarine

Raymarine RVM-100 Transom Mount Transducer

Manufacturer: RaymarinePart #: A80703SKU: 98308

Transom Mount
Stainless Steel

$694.99● In stock

Item #: 98308

Category: Transducers

● In stock — ships fast from US warehouses

Ships from US warehouses
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Description

RVM-100 Transom Mount Transducer RVM-100 all-in-one transom mount transducer is designed for Raymarine RealVision MAX compatible sonar modules, and RealVision MAX equipped chartplotters. The RVM-100 lets you easily identify structures and locate fish with the life-like clarity of RealVision MAX technology.

The RVM-100 is a 4-channel, Wide Spectrum CHIRP transducer with DownVision™, SideVision™, high-frequency CHIRP fish targeting, and 3D sonar inside. The transducer has a built-in attitude and heading reference system (AHRS) that stabilizes 3D sonar imagery, automatically compensating for vessel motion.

You’ll enjoy an accurate and life-like model of the underwater environment that filters out distortions caused by waves, swells, or vessel maneuvering. The RVM-100 also has a built-in fast-response water temperature sensor for quick, accurate readings.

The RVM-100 is designed for easy transom mounting on outboard-powered motor boats. It features a rugged, marine-grade stainless steel mounting bracket with an integrated kick-up to prevent damage in the event of a strike with floating debris, rocks, or stumps.

For bass boats, flats boats, and skiffs, an optional stainless Jack-Plate mounting bracket (A80480) and spacer kit (A80482) are available. *Works with Axiom 2 Pro RVM series, and RVM1600 Sounder Module Features: 600-Watt traditional CHIRP Designed for transom mounting on outboard boats Stainless Steel mounting bracket with an integrated kick-up feature 8M Cable

Specifications

Brand	Raymarine
Part Number	A80703
EverTide SKU	98308
UPC	723193842416
Mount	Transom Mount
Material	Stainless Steel

Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.

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	Raymarine RVM-100 Transom Mount Transducer$694.99You're viewing	Raymarine B175H-W 20° Bronze Thru-Hull Tilted Element Transducer - 1kW$1579.00	Raymarine B175M Bronze CHIRP 0° Thru-Hull Transducer$1405.22	Raymarine B265LH 1kW Bronze Thru Hull w/Temp$1999.00
Frequency	—	—	130 kHz	—
Mount	Transom Mount	Thru Hull	Thru Hull	Thru Hull
Material	Stainless Steel	Bronze	Bronze	Bronze

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Raymarine

Raymarine B60-20, 20 Degree Tilted Element Transducer f/DSM300 / DSM300G / DSM250 / DSM30

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Returns & warranty

Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.

Raymarine productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.

Marine Navigation & Instruments — frequently asked

What’s the difference between a chartplotter and a fishfinder?: A chartplotter shows your GPS position on electronic charts for navigation. A fishfinder uses sonar to show what’s below the boat — depth, bottom structure, and fish. Many modern units combine both, and networked systems can share data across displays.
Do I really need a VHF radio?: For safety, yes. A VHF radio is the primary way to reach other vessels and the Coast Guard, and a DSC-equipped VHF connected to GPS can transmit your position in an emergency. It’s more reliable than a cell phone offshore and is the recognized standard for marine distress calls.
What is NMEA 2000 and do I need it?: NMEA 2000 is a standard network that lets marine electronics — chartplotter, sonar, autopilot, sensors, engine data — share information over a single backbone. It’s not required for a simple setup, but it makes multi-device systems far easier to expand and integrate.

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