Description
SKIPPER DL2 Dual Axis Doppler Speed Log – Precise Maritime Navigation Solution
The SKIPPER DL2 Doppler Speed Log, manufactured by Jotron, represents advanced maritime navigation technology designed to deliver highly accurate speed and distance measurements critical for safe vessel operations. Operating on the Doppler principle, this dual-axis system provides real-time longitudinal and transversal ship’s speed data—both Speed Through Water (STW) and Speed Over Ground (SOG)—ensuring mariners have reliable navigation parameters under all conditions.
System Overview & Engineering Architecture
The SKIPPER DL2 integrates sophisticated engineering to ensure optimal performance across diverse marine environments. Its dual-axis configuration enables simultaneous measurement of forward/reverse (longitudinal) and lateral (transversal) motion, enhancing maneuverability during docking and navigation phases. The system utilizes multiple operating frequencies:
- 277 kHz for SOG (Speed Over Ground)
- 850–920 kHz as the primary frequency for STW (Speed Through Water)
- 264 kHz as the secondary frequency for STW
- IMO Wheelmarked with MED-B Certification: Compliant with international safety and quality standards.
- Dual Axis Measurement: Provides both STW and SOG in longitudinal and transversal directions.
- Docking Functionality (Standard): Offers enhanced three-axis capability in STW and SOG for precision maneuvering.
- Sea Temperature Readout: Integrated sensor delivers ambient seawater temperature data.
- User-Friendly Interface: Features a touch display with programmable screens and intuitive menu navigation.
- Multiple Output Protocols: Supports LAN and NMEA0183 interfaces for seamless integration with onboard systems.
- Fully Automatic Settings: Reduces manual calibration needs through intelligent auto-adjustment.
- Optional CCS Approval: Available upon request for vessels requiring Chinese classification compliance.
- IMO Standards: Designed in accordance with International Maritime Organization guidelines for navigational equipment.
- SOLAS Chapter V: Fully compliant with Safety of Life at Sea regulations governing ship navigation and radar plotting aids.
- MED-B Wheelmark Approval: Certified under the Marine Equipment Directive, ensuring conformity with EU safety and environmental protection standards.
- Classification Societies: Recognized by major classification societies including DNV, ABS, and Lloyd’s Register. Optional CCS approval available.
- Regular cleaning of the transducer window to remove marine growth or debris affecting signal transmission.
- Periodic verification of calibration using certified reference tools.
- Inspection of cable connections and terminal integrity.
- Software updates via LAN interface when new firmware versions are released by the OEM.
This multi-frequency approach ensures robust signal processing and accuracy even in challenging underwater acoustics.
Core Features & Operational Advantages
Component Breakdown & Technical Specifications
| Parameter | Specification |
|---|---|
| Speed Log Model | DL2 |
| Number of Axes | 2 and 3 (with docking function) |
| Speed Range Longitudinal | +/- 50 knots |
| Speed Range Transversal | +/- 50 knots |
| Operating Frequency | • 277 kHz (SOG) • 850–920 kHz (STW Primary) • 264 kHz (STW Secondary) |
| Trip Total | 999999.9 NM |
| Water Track (Minimum Depth) | 2 meters |
| Temperature Accuracy Error | Not specified |
SOLAS, IMO, IEC & Classification Society Compliance
The SKIPPER DL2 meets stringent regulatory requirements essential for global maritime operations:
Onboard Maintenance & Inspection Standards
To maintain peak operational efficiency and regulatory compliance, routine maintenance protocols should include:
Adherence to manufacturer-recommended service intervals will prolong equipment lifespan and minimize downtime.
Technical Support & Port Delivery Call to Action
Seanav Marine offers comprehensive technical support for the SKIPPER DL2, including installation guidance, commissioning services, troubleshooting assistance, and spare parts supply. Our team supports fleet operators and individual vessels throughout the UAE and beyond, ensuring minimal disruption to operational schedules.
For inquiries regarding pricing, availability, retrofit integration, or scheduled maintenance contracts, please contact our dedicated technical team today:
Contact Seanav Marine Technical Team
Explore related products such as the Marinelite DL9000 & HDL9000 Doppler Speed Log or learn more about our Marine Speed Log Repair Service in JNPA.
Official OEM Product Reference Page: SKIPPER DL2 – Jotron
Frequently Asked Questions
Frequently Asked Questions
A: It provides dual-axis Speed Through Water (STW) and Speed Over Ground (SOG) in both longitudinal and transversal directions.
A: Yes, it is IMO Wheelmarked with MED-B certification, making it suitable for SOLAS Chapter V compliance.
A: Yes, docking functionality is included as standard, providing three-axis measurement in STW and SOG modes.
A: Yes, it supports LAN and NMEA0183 output protocols for easy integration with onboard systems.
A: The speed range is ±50 knots in both longitudinal and transversal directions.
A: Yes, CCS (China Classification Society) approval can be requested upon order.
A: Minimum water depth required is 2 meters from the transducer face.
A: Yes, it includes a built-in sensor for sea temperature readout.
A: The trip totalizer supports up to 999999.9 nautical miles.
A: Seanav Marine provides specialized repair and calibration services. Visit our contact page for details.
Technical Specifications & Operational Standards
Review certified engineering parameters, electrical inputs, data protocols, and Class compliance standards for this unit:
| OEM Brand / Manufacturer | Skipper |
|---|---|
| Model / Part Number | SEANAV-NAV-DL2 |
| Equipment Classification | Commercial Marine Navigation & Communication Spares |
| Operating Conditions | -15°C to +55°C Industrial Marine Deck / Wheelhouse Environment |
| Quality Standard | OEM Marine Grade, Factory Bench Verified Ahead of Dispatch |
| Stock & Port Logistics | Ready Stock for Immediate Vessel Supply across Mumbai, JNPT, Kandla, Cochin, Chennai & Visakhapatnam |
| In-the-Box Documentation | OEM Certificate of Conformance, Wiring Schematics, Installation & Operating Manual |
Seanav Marine maintains bonded warehouse spare parts inventory and factory-trained technical riding squads across all major Indian ports. Immediate dispatch available to vessel agents, ship chandlers, and technical managers at Mumbai, JNPT (Nhava Sheva), Kandla, Mundra, Cochin, Chennai, and Visakhapatnam (view all 400+ ports →).