Description
⚓ Bottom Line Up Front (BLUF)
The ONWA KTD-TM480S is a compact, streamlined transom-mount sonar transducer engineered for small fishing craft, patrol tenders, and coastal boats. Delivering dual-frequency 50/200 kHz acoustic sounding up to 350 meters with integrated water temperature readout, its lightweight, low-drag design installs quickly on outboard transoms and delivers crisp underwater imaging. Distributed and supported by Seanav Marine, Dubai Maritime City.
Technical Overview & Marine Operational Capabilities
The ONWA KTD-TM480S Transom Mount Sonar Transducer represents ONWA Marine Electronics’ advanced engineering for commercial fishing, workboat, merchant marine, and offshore yacht operations. Designed to operate continuously under harsh saltwater environmental exposure, vibration, and thermal fluctuations, this equipment integrates precision acoustic, RF, or digital telemetry circuitry providing outstanding reliability.
Supplied and supported throughout the Middle East, Arabian Gulf, and Red Sea by Seanav Marine (headquartered at Dubai Maritime City, UAE), every unit is backed by an authentic factory warranty, comprehensive technical documentation, immediate regional inventory availability, and certified marine electronics field commissioning.
Key Features & System Advantages
- Certified Marine Durability: Engineered in full compliance with IEC 60945 and international marine environmental standards for vibration resistance, thermal shock, and IP ingress protection.
- Universal Network Interoperability: Standard NMEA 0183 and NMEA 2000 Micro-C protocols ensure plug-and-play communication with bridge MFDs, GPS sensors, autopilots, and Voyage Data Recorders.
- Signal Precision & Low Noise: Advanced digital filtering eliminates acoustic or RF interference from onboard generators, inverters, and vessel communications.
- Low Total Cost of Ownership: Designed for continuous commercial operation with high mean time between failures (MTBF), low power consumption, and easily accessible spare parts.
- Dubai Maritime City Certified Support: Full local warranty, bench calibration, spare parts availability, and 24/7 attendance across UAE and GCC ports.
Technical Specifications
Vessel Suitability & Marine Applications
- Commercial Fishing Fleets: Trawlers, purse seiners, longliners, and coastal fishing boats requiring dependable depth sounding, gear tracking, and navigation.
- Offshore Support & Workboats: Crew boats (CTV), harbor tugs, pilot launches, and supply vessels operating in high-traffic offshore fields.
- Merchant & Cargo Ships: Auxiliary navigation displays, secondary depth sensors, bridge data distribution, and monitoring telemetry.
- Private Yachts & Cruisers: Helm modernization, chartplotter expansion, AIS tracking, and radar security upgrades.
Standard Package & Included Accessories
- ONWA KTD-TM480S Transducer Unit
- Reinforced Polymer Transom Bracket
- Fasteners and Installation Instructions
Frequently Asked Questions (FAQ) – Expert Insights
Q: What type of vessels is the KTD-TM480S best suited for?
A: It is ideally suited for outboard-powered skiffs, commercial tenders, RIBs, and coastal fishing boats up to 28 feet.
Q: What frequencies does the KTD-TM480S operate on?
A: It operates on dual 50 kHz and 200 kHz frequencies, rated for 300W to 600W acoustic power.
Q: What is the maximum sounding depth?
A: Under favorable sea and bottom conditions, it delivers accurate depth tracking up to 350 meters (approx. 1,150 feet).
Q: Is the transom mounting bracket adjustable?
A: Yes. The rugged polymer bracket allows precise angle adjustment to compensate for transom deadrise angles from 0° to 22°.
Q: What cable length is provided?
A: It is supplied with 6 meters of shielded marine cable terminating in an ONWA multi-pin transducer connector.
Q: Does Seanav Marine offer local stock in the UAE?
A: Yes. Seanav Marine maintains ready stock of the KTD-TM480S with express courier delivery across all UAE emirates and Middle East ports.
{
“@context”: “https://schema.org”,
“@graph”: [
{
“@type”: “Product”,
“@id”: “https://seanav.org/product/onwa-ktd-tm480s-transom-mount-transducer/#product”,
“name”: “ONWA KTD-TM480S Transom Mount Sonar Transducer”,
“url”: “https://seanav.org/product/onwa-ktd-tm480s-transom-mount-transducer/”,
“sku”: “ONWA-KTD-TM480S”,
“mpn”: “ONWA-KTD-TM480S”,
“image”: “https://seanav.org/wp-content/uploads/2026/11/onwa/onwa-ktd-tm480s-transom-mount-transducer.webp”,
“description”: “The ONWA KTD-TM480S is a compact, streamlined transom-mount sonar transducer engineered for small fishing craft, patrol tenders, and coastal boats. Delivering dual-frequency 50/200 kHz acoustic sounding up to 350 meters with integrated water temperature readout, its lightweight, low-drag design installs quickly on outboard transoms and delivers crisp underwater imaging. Distributed and supported by Seanav Marine, Dubai Maritime City.”,
“brand”: {
“@type”: “Brand”,
“name”: “Onwa Marine”,
“url”: “https://www.onwamarine.com”
},
“manufacturer”: {
“@type”: “Organization”,
“name”: “ONWA Marine Electronics Co., Ltd.”
},
“offers”: {
“@type”: “Offer”,
“url”: “https://seanav.org/product/onwa-ktd-tm480s-transom-mount-transducer/”,
“priceCurrency”: “AED”,
“price”: “660.6”,
“availability”: “https://schema.org/InStock”,
“seller”: {
“@type”: “Organization”,
“name”: “Seanav Marine”,
“url”: “https://seanav.org”
}
}
},
{
“@type”: “FAQPage”,
“@id”: “https://seanav.org/product/onwa-ktd-tm480s-transom-mount-transducer/#faq”,
“mainEntity”: [
{
“@type”: “Question”,
“name”: “What type of vessels is the KTD-TM480S best suited for?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “It is ideally suited for outboard-powered skiffs, commercial tenders, RIBs, and coastal fishing boats up to 28 feet.”
}
},
{
“@type”: “Question”,
“name”: “What frequencies does the KTD-TM480S operate on?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “It operates on dual 50 kHz and 200 kHz frequencies, rated for 300W to 600W acoustic power.”
}
},
{
“@type”: “Question”,
“name”: “What is the maximum sounding depth?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Under favorable sea and bottom conditions, it delivers accurate depth tracking up to 350 meters (approx. 1,150 feet).”
}
},
{
“@type”: “Question”,
“name”: “Is the transom mounting bracket adjustable?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes. The rugged polymer bracket allows precise angle adjustment to compensate for transom deadrise angles from 0u00b0 to 22u00b0.”
}
},
{
“@type”: “Question”,
“name”: “What cable length is provided?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “It is supplied with 6 meters of shielded marine cable terminating in an ONWA multi-pin transducer connector.”
}
},
{
“@type”: “Question”,
“name”: “Does Seanav Marine offer local stock in the UAE?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes. Seanav Marine maintains ready stock of the KTD-TM480S with express courier delivery across all UAE emirates and Middle East ports.”
}
}
]
}
]
}
Manufacturer documentation and compatibility
Select the exact model, hardware generation and document revision. Before ordering, confirm the equipment interfaces, power requirements, required approvals and included accessories against the applicable manufacturer documentation. Send nameplate photographs, the installed equipment details, vessel name, port and ETA with your enquiry.
