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ST300 Transducer

Low-profile though-hull short stem speed/temp sensor.

For Raymarine instruments only.


Type Instrument transducer
Mounting Low-profile through-hull
Housing Urethane
Hull Aperture2" (51mm)
Usable Shaft Length1.12" (28mm)
Cable Length 10 meters
Mix and Match Χ
Temperature Sensor
Speed Sensor
Retractable Insert Χ
Tilted Χ
Status In production
Reference Page View the ST300 page on the Airmar website


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Available Versions

These transducers have a permanently attached 10 meter cable.

Cable ConnectorGemeco Part #Airmar Part #Equipment
ST300-FISO31-256-1-41Raymarine instruments with mini-spade connectors

Replacement Parts

PartAirmar Part #Description
04-004Plastic Hull Nut
04-234-1Plastic Cap Nut
33-350-01Paddlewheel Kit
33-360-01P8 Shorty Plastic Low-Profile Depth Housing
33-361-01P371 Shorty Plastic Low-Profile Speed/Temp Housing with Valve
33-386-01Blanking Plug
33-468-01P208 Shorty Plastic Taper-Flush Depth Housing