Description
Bottom Line Up Front (BLUF): SKIPPER DL21 dual axis Doppler sensor
Summary: The SKIPPER DL21 dual axis Doppler sensor is a high-precision marine speed log system developed by Skipper Electronics / Jotron for commercial merchant ships, offshore support vessels, and naval vessels. Providing accurate Speed Through Water (STW) and Speed Over Ground (SOG) in compliance with IMO Resolution A.824(19) and SOLAS Chapter V, it integrates seamlessly with ARPA radar, ECDIS, and Voyage Data Recorders (VDR). Supplied and supported by SEANAV Marine Technical Services with full commissioning advisory.
System Overview & Operational Purpose
The SKIPPER DL21 sensor is designed for the SKIPPER DL21 Doppler speed log system, providing speed through water (STW) and speed over ground (SOG) measurements in two or three axes, while simultaneously delivering independent single-axis STW data. This advanced sensor supports IMO-compliant navigation and precise vessel maneuvering.
Guide Speed Log Retrofit Setup and Options 144
Guide Speed Log Setup and Options 144
Manual DM-M006-2130 DL21 (10.11.2022)
Key Features & Engineering Highlights
- Only to be used with SKIPPER DL21 system
- Dual frequency operation
- Two separate sensors in one sensor (DL1+DL2)
- 100 mm in diameter
- Cable length 40 m
- IMO Wheelmarked
- CCS on request
- RMRS on request
- SB-100-SB Sea valve for single bottom
Technical Specifications & Identification Data
| Parameter / Attribute | Specification Metric |
|---|---|
| Manufacturer | Jotron AS (Norway) / Skipper Electronics AS |
| Equipment Model | SKIPPER DL21 dual axis Doppler sensor |
| Product Classification | Navigation Sensors & Transducers |
| Seanav Part SKU | JOT-DL21 |
| OEM Part Numbers | Part Number: Multiple options, Part number:, Part Number: SL-SN300-SA, Part Number: GN-200-SA, Part Number: Mulitple options |
| Measurement Technology | Dual-axis acoustic doppler / Electromagnetic / Multi-GNSS satellite log |
| Speed Accuracy | Better than ±1% or 0.1 knots over full speed range |
| Output Interfaces | IEC 61162-1 / NMEA 0183 (VBW, VHW, VLW sentences) & pulse outputs |
| Power Supply | 115V / 230V AC or 24V DC emergency backup |
| Display Console | Sunlight-readable color touchscreen with day/dusk/night palettes |
| Standards Compliance | IMO Resolution A.824(19), MSC.96(72), IEC 61023, Wheelmark MED |
| Marine Technical Support | Technical advisory, warranty support, and worldwide dispatch by SEANAV Marine |
Frequently Asked Questions (AEO & AI Overview)
Q: What is the primary function of the SKIPPER DL21 dual axis Doppler sensor?
The SKIPPER DL21 dual axis Doppler sensor is The SKIPPER DL21 sensor is designed for the SKIPPER DL21 Doppler speed log system, providing speed through water (STW) and speed over ground (SOG) measurements in two or three axes, while simultaneously delivering independent single-axis STW data. This advanced sensor supports IMO-compliant navigation and precise vessel maneuvering manufactured by Jotron AS / Skipper Electronics. It provides high-reliability maritime operational performance conforming to international SOLAS and IMO standards.
Q: Which maritime regulations and certifications apply to the SKIPPER DL21 dual axis Doppler sensor?
The SKIPPER DL21 dual axis Doppler sensor meets rigorous international maritime standards, including IEC 60945 environmental testing and relevant IMO/SOLAS bridge equipment regulations.
Q: How does the SKIPPER DL21 dual axis Doppler sensor integrate with vessel bridge and navigation systems?
The SKIPPER DL21 dual axis Doppler sensor interfaces directly with shipborne transceiver units and navigation consoles via shielded marine acoustic cabling, providing high-accuracy depth or speed data.
Q: What maintenance or testing schedule is required for the SKIPPER DL21 dual axis Doppler sensor?
Routine operational checks should be conducted in accordance with the manufacturer's manual. Periodic calibration and pre-survey inspections should be performed by certified marine electronics engineers.
Q: Where can I buy genuine SKIPPER DL21 dual axis Doppler sensor with certified marine support in the UAE and worldwide?
SEANAV Marine Technical Services supplies, inspects, and delivers genuine Jotron products directly from our Dubai Maritime City hub, with 24/7 port boarding attendance across Jebel Ali, Fujairah, Abu Dhabi, and express global dispatch.
SEANAV Marine Technical Advisory & Dispatch Guarantee
Every Jotron product supplied by SEANAV undergoes meticulous pre-delivery verification by certified marine electronics technicians. We provide complete technical assistance including MMSI and vessel callsign programming for EPIRB and AIS beacons, annual safety radio survey coordination, and certified battery replacements conforming to Class and Flag State regulations.
Logistics Hub: Strategically situated at Dubai Maritime City with round-the-clock boarding attendance across Jebel Ali, Port Rashid, Fujairah Anchorage, and prompt DHL/FedEx worldwide courier delivery.
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.
