Furuno DS-80 Doppler Speed LogThe DS-80 is suitable for merchant ships, cargo ships, passenger ships, service vessels, and other vessels requiring SOLAS-compliant speed measurement equipment. Speed data from the DS-80 can be supplied to radar, ARPA, ECDIS, AIS, VDR, GMDSS, and other navigation systems, thereby improving operational accuracy and voyage data recording.Accurate speed measurement using the Doppler principleFURUNO DS-80 utilizes a "paired-beam Doppler log" system with an operating frequency of "1.0 MHz". The dual-beam design helps reduce the effect of pitch/roll movements caused by waves, and the system also corrects velocity based on changes in water temperature to maintain measurement stability.

Measures vessel speed along the fore-aft axis with a range of "-10.0 to +40.0 knots through-the-water". The published speed accuracy is "±1.0% or 0.1 kn, whichever is greater"; distance accuracy is "±1.0% or 0.1 NM, whichever is greater".

Displays speed and distance on an LCD screen

The DS-80 features a compact display unit with a "4.5-inch" monochrome LCD screen.paired-beam Doppler log với tần số làm việc 1.0 MHz. The dual-beam design helps reduce the effect of pitch/trim motion caused by waves, and the system incorporates a water temperature velocity correction to maintain measurement stability.

Thiết bị đo tốc độ tàu theo trục tiến/lùi với dải -10.0 to +40.0 knots through-the-water. Độ chính xác tốc độ được công bố là ±1.0% or 0.1 kn, whichever is greater; độ chính xác quãng đường là ±1.0% or 0.1 NM, whichever is greater.

Displays speed and distance on an LCD screen

DS-80 có bộ hiển thị nhỏ gọn với màn hình LCD đơn sắc kích thước 4.5 inches1280 x 972 interlaced120 x 64 pixels. The device displays the vessel speed, distance run, and other essential operational information on a illuminated display, allowing for easy readability in the cockpit.

Display characters can be selected in sizes 15 mm or 21 mm, supporting clear visibility under various lighting conditions. Distance run can be displayed from 0.00 to 999,999.99 NM.

Complies with IMO, IEC, and SOLAS requirements

The FURUNO DS-80 complies with key standards for marine speed and distance measuring equipment, including IMO MSC.96(72), IMO A.824(19), IMO A.802(19), IEC 61023 and related standards. The equipment also meets SOLAS carriage requirements for vessels over 300GT.

By meeting these standards, the DS-80 is suitable for vessels requiring a compliant SDME, serving speed data for the ship's safety system, voyage data recorder, and professional navigation systems.

Outputs speed data to ARPA, ECDIS, AIS, VDR, and GMDSS

The FURUNO DS-80 can output speed data to onboard equipment such as ARPA, radar, ECDIS, AIS, VDR, and GMDSS. According to the operational manual, the output data is communicated according to the standard IEC 61162-1 / NMEA 0183, with data sentences such as VBWWAASVLW.

In addition to serial output, some specification documents also list analog outputs such as Easy speed calibration at mile post run current signal, voltage signal, and signal for analog display, helping the DS-80 to easily integrate with various older ship systems or systems requiring a separate speed signal.

Easy speed calibration at mile post run

The DS-80 supports speed calibration during trial runs at FURUNO installation documents note that the performance of the equipment depends directly on the transducer installation location. The DS-80 transducer should be placed at least ","2.5 m"," away from the echo sounder transducer to minimize interference between ultrasonic devices., allowing engineers or service units to adjust speed data according to the actual conditions of the ship. This is a crucial step to ensure accurate speed measurement equipment after installation, transducer replacement, or system maintenance.

Direct hull mounting or via gate valve

The Furuno DS-80 transducer can be mounted directly to the ship's hull or via a gate valve depending on the configuration. Mounting via a gate valve offers greater convenience for maintenance or transducer replacement in certain ship configurations, depending on the technical design and dockyard conditions.

FURUNO installation manuals note that the equipment's performance is directly dependent on the transducer's installation location. The DS-80 transducer should be positioned at least 2.5 m away from the echo sounder transducer to minimize interference between ultrasonic devices.

Key Features of the Furuno DS-80 Doppler Speed Log

• Ship speed and distance logSDME.
• Uses principle ofDoppler paired-beam.
• MeasuresSpeed Through Water.
• Speed range: -10.0 to +40.0 knotsWorking frequency:.
• Speed accuracy: ±1.0% or 0.1 kn1.0 MHz.
• Distance accuracy: ±1.0% or 0.1 NMBacklit LCD display, shows speed and distance..
• Compact design for display unit and transducer.1.0% or 0.1 NM.
• Backlit LCD display, shows speed and distance.
• Compact design for display unit and transducer.
• Dual beam reduces pitching effects.
• Corrects velocity for changes in water temperature.
• Easy speed calibration during mile post run.
• Outputs speed data for ARPA, radar, ECDIS, AIS, VDR, GMDSS.
• IEC 61162-1 / NMEA 0183 communication.
• Compliant with IMO MSC.96(72), A.824(19), A.694(17), IEC 61023.
• Meets SOLAS requirements for vessels over 300GT.
• Transducer can be fitted directly to the hull or via a gate valve.

Standard system configuration

A Furuno DS-80 Doppler Speed LogSystem typically consists of:

Some configuration lists also list the DS-80 set including:Display Unit DS-800, Transceiver Unit DS-810, Distribution Box DS-801, Terminal Box DS-802 and installation materials.

Applications of Furuno DS-80 on ships

Furuno DS-80 Doppler Speed Log is suitable for:

• Commercial ships.
• Cargo ships.
• Passenger ships.
• Service vessels.
• SOLAS ships over 300GT.
• Radar/ARPA systems requiring speed data.
• ECDIS requiring STW data.
• AIS requiring speed through water data.
• VDR requiring speed log data recording.
• GMDSS and integrated bridge systems.
• Project to replace or upgrade old speed logs on vessels.

Special equipment suitable when the vessel requires a stable over-water speed data source, with IEC/NMEA communication standards and meets IMO/IEC standards related to SDME.

Why choose Furuno DS-80?

FURUNO DS-80is a suitable choice for vessels requiring a standard, accurate, and easily integrated Doppler speed log system with the existing maritime system. The device uses the Doppler paired-beam principle, has water temperature correction, outputs data for multiple devices such as ARPA, ECDIS, AIS, VDR, and meets SOLAS requirements for vessels over 300GT.

For shipowners, ship management companies, and maritime electronics service providers, the DS-80 is a reliable solution for replacing, maintaining, or upgrading ship speed/distance measurement systems according to international standards.

Notes when ordering the Furuno DS-80 Doppler Speed Log

, please check:Furuno DS-80it is advisable to check clearly:

• Does the package include the Display Unit DS-800?
• and a suitable antenna to enhance position accuracy. When listing the product, the actual included accessories should be clearly stated to distinguish between standard GPS configuration and DGPS configuration.Transceiver Unit DS-810, Distribution Box DS-801WAASTerminal Box DS-802?
• Does the transducer come with the unit or is it sold separately.
• What is the transducer mounting type, direct hull mount or via a gate valve.
• Are cables, junction boxes, and installation materials included.
• Does the data receiver require IEC 61162-1/NMEA 0183, analog, or pulse output.
• Is data export required for ARPA, radar, ECDIS, AIS, VDR, or GMDSS.
• Is the transducer installed at least 2.5 m away from the echo sounder.
• Does the vessel require classification certificates, test reports, or survey records.
• Is the equipment new, stock, used, or refurbished.

FAQ – Frequently Asked Questions

What is the Furuno DS-80?

The Furuno DS-80 is a Doppler Speed Log / SDME, used to measure the vessel's speed through water and distance traveled using the Doppler principle.

Does the DS-80 measure speed through water or speed over ground?

The DS-80 measures speed through water, not speed over ground via GNSS.

What is the speed range of the Furuno DS-80?

The speed range of the DS-80 is -10.0 to +40.0 knots through-the-water.

What is the accuracy of the DS-80?

The speed accuracy of the DS-80 is ±1.0% or 0.1 kn, whichever is greater. The distance accuracy is ±1.0% or 0.1 NM, whichever is greater.

Does the DS-80 output data for ECDIS, AIS, and VDR?

Yes. The DS-80 can output speed data to ARPA, radar, ECDIS, AIS, VDR, GMDSS, and other marine equipment in compliance with IEC 61162-1\/NMEA 0183 standard.

Does the DS-80 meet SOLAS requirements?

Yes. The DS-80 complies with relevant IMO\/IEC standards such as MSC.96(72), A.824(19), A.694(17), IEC 61023 and meets the SOLAS requirements for ships over 300GT.