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 ST300, Thru-hull Shorty™

Manufacturer: RaymarinePart #: E26008SKU: 25050

Thru Hull

$127.36● In stock

Item #: 25050

Category: Transducers

● In stock — ships fast from US warehouses

Ships from US warehouses
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Description

ST300 Thru-hull Shorty™ The S300/ST300 speed sensors are our lowest cost and shortest thru-hull speed sensors. As part of our Shorty™ Series, they are designed for boats with low headroom.

The plastic P371 low profile outer housing option is nearly flush and minimizes drag with only 5 mm (3/16") extending outside of the hull. The plastic P398 countersunk outer housing option mounts flush, eliminating turbulence for more accurate speed readings.

Specifications

Brand	Raymarine
Part Number	E26008
EverTide SKU	25050
UPC	723193260081
Mount	Thru Hull

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

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Frequency	—	—	130 kHz	—
Mount	Thru Hull	Thru Hull	Thru Hull	Thru Hull
Material	—	Bronze	Bronze	Bronze

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Raymarine

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

$389.00

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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