Furuno has released its DS85 Doppler Speed Log, which is designed to provide the most accurate speed measurement possible and cover regulatory requirements for larger vessels as the next generation single axis speedometer. Beyond nature’s variance of extreme chop and heavy seas, boats create their own noise that can throw off sounding devices.

Furuno has devoted its extensive expertise to a new transducer design and coupled it with a higher operating frequency to cut through the noise. The DS85 also has more advanced processing algorithms to further clarify the signal.

“Vessel speed fore-aft is a significant factor in arriving in port, especially constricted navigation ways, and of course is supremely important when coming alongside the pier. The vessel master and mates need to know the speed of the vessel fore and aft to plan for all maneuvering,” said Matt Wood, Furuno’s national sales manager.

On the display side, Wood added that one of the most notable upgrades over the previous generation is a revamped LCD interface that features brighter colors and is easy to read, with an analog speed reading that leaves nothing to interpretation. Network power can accommodate up to three remote displays in the system.

A new ball valve transducer makes service — from cleaning to inspection to repair — far easier, and the valve is smaller and lighter than the previous generation while still being strong.

For larger boats with long runs, the system can accommodate up to 400 meters of cable. And for vessels making a Furuno upgrade, some of the DS80 components can be used, which drives down the installation price. It has eight outputs plus ethernet, providing numerous ways to plug the DS85 into radar and other systems.

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Brian Hagenbuch is National Fisherman's products editor, a contributing editor to SeafoodSource and a Bristol Bay fisherman. He is based in Seattle.

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