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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Airmar

Airmar B75HW High Wide Chirp Transducer - 12 Degree Deadrise, 600W Thru Hull

Manufacturer: AirmarPart #: B75C-12-HW-MMSKU: 103032

600W
100 kHz
12°
Thru Hull
Bronze

$964.00$1069.99Save $105.99 (10%)Ships when available

Item #: 103032

Category: Transducers

Currently out of stock. This item isn't available to order right now — check back soon or contact us for availability.

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Description

B75HW High Wide Tilted Element Chirp Transducer - 12 Degree Deadrise, 600W Thru Hull Requires Mix and Match Cable for the appropriate Fishfinder it will be connected to. Airmar’s low-profile Chirp-ready transducer models are the perfect addition to smaller boats such as center consoles.

The B75HW combines the benefits of the high-frequency band for amazing target separation on baitfish and schooling gamefish, with a wide 30° beamwidth for maximum coverage under the boat. The B75H transducer delivers up to 100 kHz of total bandwidth in just one installation and delivers amazing coverage under the boat in depths to 106 meters (350').

B75HW transmits across the following bandwidth: High frequency 150 to 250 kHz The transducer is installed almost flush to the hull. The tilt of the element corrects for the hull deadrise by orienting the beam directly down.

This ensures maximum echo returns to the transducer for more accurate depth readings. Fixed 12° tilted version for 8° to 15° hull deadrises.

Features: Depth and fast-response water-temperature sensor 600 W with a maximum depth performance of 106 m (350') High frequency: 150 to 250 kHz 30° beamwidth High frequency delivers great shallow-water performance, bottom detail, and clear fish-target returns Low-profile, thru-hull housing provides good resolution at speed when installed properly Bronze housing for use on stepped, planing, or displacement hull Exclusive Xducer ID® technology 12° tilted version for 8° to 15° hull deadrises Hole Size: 70 mm (2-13/16") CHIRP-Ready Single-Band This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Specifications

Brand	Airmar
Part Number	B75C-12-HW-MM
EverTide SKU	103032
UPC	801769018134
Power	600 W
Frequency	100 kHz
Mount	Thru Hull
Material	Bronze
Beam Angle	12°

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

Compare similar products

	Airmar B75HW High Wide Chirp Transducer - 12 Degree Deadrise, 600W Thru Hull$964.00You're viewing	Airmar 599 Low/High Frequency - In-Hull Chirp Transducer w/o Connector$6599.00	Airmar B150M Bronze 20 Degree Thru-Hull 300W 8-Pin$459.99	Airmar B164 Bronze Thru-Hull - 50/200 kHz - 1 kW - 12° Tilted Element - Requires Mix & Match Cable$1264.00
Power	600 W	—	300 W	600 W
Frequency	100 kHz	112 kHz	155 kHz	50/200 kHz
Connector	—	—	8-pin	9-pin
Mount	Thru Hull	In Hull	Thru Hull	Thru Hull
Material	Bronze	—	Bronze	Bronze

Complete your setup

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Airmar 599 Low/High Frequency - In-Hull Chirp Transducer w/o Connector

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Airmar B150M Bronze 20 Degree Thru-Hull 300W 8-Pin

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Airmar B164 Bronze Thru-Hull - 50/200 kHz - 1 kW - 12° Tilted Element - Requires Mix & Match Cable

$1264.00

Airmar

Airmar B164 Bronze Thru-Hull - 50/200 kHz - 1 kW - 20° Tilted Element - Requires Mix & Match Cable

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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.

Airmar 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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