Raymarine B744VL Long Stem Bronze Thru-Hull Triducer - Professional Multi-Sensor Transducer with Fairing Block
Three essential marine instruments in one streamlined thru-hull installation - depth, speed, and temperature
The Raymarine B744VL Long Stem Bronze Triducer (Model A66092) represents the ultimate solution for comprehensive marine instrumentation in vessels with thick hulls or steep deadrise angles. This professional-grade multisensor combines precision depth sounding, accurate speed measurement, and reliable temperature monitoring in a single bronze thru-hull housing, eliminating the need for multiple hull penetrations while delivering exceptional performance for serious anglers and mariners.
Engineered specifically for challenging hull configurations, the extended stem design accommodates deadrise angles from 0° to 24° and thicker cored hulls that standard transducers cannot properly service. Operating at both 50 kHz and 200 kHz frequencies with 600-watt power handling capability, this triducer provides superior depth penetration up to 1,200 feet at low frequency and detailed high-frequency imaging to 700 feet, making it ideal for both deep-water navigation and precise shallow-water fishing applications.
Advanced Multi-Sensor Technology
- Triple Function Integration: Combines depth sounder, speed sensor, and temperature probe in one compact bronze housing
- Long Stem Design: Extended stem length specifically engineered for steep deadrise hulls and thick cored construction
- Dual Frequency Operation: 50/200 kHz frequencies provide optimal performance for all water conditions
- High Power Handling: 600-watt maximum power rating ensures strong signal penetration and clear returns
- Patented Safety Valve: Self-sealing valve assembly prevents water intrusion when insert is removed for maintenance
- Professional Bronze Construction: Corrosion-resistant bronze material ensures long-term durability in marine environments
- Streamlined Fairing Block: Included high-performance fairing reduces drag and turbulence for improved boat performance
- Single Hull Penetration: Eliminates need for multiple thru-hull fittings while providing comprehensive instrumentation
Technical Specifications
Performance Specifications
- Operating Frequencies: 50 kHz / 200 kHz dual frequency
- Maximum Power: 600 watts RMS
- Depth Range (Low Freq): 1,200 feet maximum
- Depth Range (High Freq): 700 feet maximum
- Beam Width: 45° (50 kHz) / 12° (200 kHz)
- Deadrise Compatibility: 0° to 24° deadrise angles
Construction & Installation
- Housing Material: Marine-grade bronze construction
- Mounting Type: Thru-hull installation
- Hull Compatibility: Fiberglass and wood hulls
- Installation Hole: 2-inch diameter required
- Stem Design: Extended long stem for thick/cored hulls
- Cable Length: 33 feet (10 meters) with connector
Sensor Functions
- Depth Sensing: Precision sonar depth measurement
- Speed Sensing: Paddle wheel speed through water
- Temperature Sensing: Accurate water temperature monitoring
- Data Output: Compatible with NMEA marine electronics
System Compatibility & Applications
Compatible Raymarine Equipment
- Sounder Modules: DSM30 and DSM300 dedicated sonar modules
- Fishfinder Systems: All 600-watt Raymarine fishfinders and chartplotter combinations
- Legacy Systems: Compatible with a, c, e, eS Series (requires E66066 adapter cable)
- Integrated Displays: Compatible with Raymarine multifunction displays with built-in sonar
Ideal Vessel Applications
- Deep-V Hulls: Specifically designed for boats with steep deadrise angles
- Cored Hull Construction: Extended stem accommodates thick fiberglass and foam core hulls
- Sport Fishing Boats: Center consoles and sport fishermen with aggressive hull designs
- Performance Cruisers: Fast cruising boats requiring streamlined underwater profile
Professional Installation Advantages
Long Stem Benefits
- Thick Hull Accommodation: Extended stem length ensures proper sensor projection through cored hulls
- Steep Deadrise Compatibility: Maintains optimal sensor angle on hulls up to 24° deadrise
- Improved Water Flow: Proper stem length ensures adequate water flow for accurate speed readings
- Professional Installation: Accommodates various hull thicknesses without modification
Safety & Maintenance Features
- Patented Valve Assembly: Prevents water intrusion during paddle wheel maintenance or removal
- Self-Sealing Insert: Removable paddle wheel allows cleaning without hauling the boat
- Bronze Durability: Corrosion-resistant construction withstands harsh marine environments
- Streamlined Fairing: Reduces turbulence and protects transducer from damage
Marine Navigation & Fishing Performance
Navigation Applications
- Precise depth measurement for safe passage
- Speed through water for accurate navigation calculations
- Water temperature monitoring for weather awareness
- Chart plotter integration for comprehensive navigation data
Fishing Applications
- Bottom structure identification with dual frequency
- Fish detection at various depths and frequencies
- Trolling speed optimization with through-water speed
- Thermocline location using temperature data
Performance Benefits
- Single thru-hull installation reduces complexity
- High-speed fairing minimizes drag impact
- Dual frequency operation optimizes all conditions
- Professional-grade reliability for commercial applications
Frequently Asked Questions
What makes the B744VL different from the standard B744V transducer?
The B744VL features an extended long stem design specifically engineered for boats with steep deadrise angles (up to 24°) and thick cored hulls. The longer stem ensures proper sensor positioning and water flow for accurate readings in challenging hull configurations.
Can I remove the paddle wheel for cleaning without flooding the boat?
Yes, the B744VL features Raymarine's patented self-sealing valve assembly that automatically prevents water from entering the hull when the paddle wheel insert is removed for cleaning or maintenance. This allows in-water servicing without hauling the boat.
What hole size is required for installation?
The B744VL requires a 2-inch diameter hole for thru-hull installation. Professional installation is recommended to ensure proper sealing, alignment, and optimal performance of all three sensors (depth, speed, temperature).
Is the B744VL compatible with non-Raymarine electronics?
The B744VL is designed for Raymarine electronics including DSM30, DSM300, and fishfinder systems. For newer a, c, e, and eS series units, the E66066 adapter cable is required. Compatibility with other brands may require specific interface modules.
What is the maximum depth capability of the B744VL?
The B744VL provides depth readings up to 1,200 feet at 50 kHz low frequency for maximum penetration, and up to 700 feet at 200 kHz high frequency for detailed bottom discrimination and fish detection in shallower waters.
Choose the Raymarine B744VL Long Stem Bronze Triducer for professional-grade marine instrumentation that accommodates the most challenging hull designs. With three essential sensors in one streamlined installation, patented safety features, and robust bronze construction, this triducer delivers the comprehensive data and reliability that serious mariners and anglers demand for safe navigation and successful fishing.