The Furuno DS50T is a Doppler Speed Log designed to meet the IMO Resolution,
IEC specifications and other national regulations. Its three-beam transmission
reduces the effect of pitch and roll for high accuracy and enables the
measurement of port-stbd speed as well as fore-aft speed. Keel clearance
information is provided to assist with shallow water navigation.
The DS50T measures and displays the ship's over-the-ground or
through-the-water speed based on the Doppler effect. Speed data can be output
to external equipment such as ARPAs, INS and IBS. There are three operation
modes: Ground-tracking, Water-tracking and Auto. The Auto mode continuously
displays ship's speed, switching between Ground-tracking and Water-tracking
The DS50T consists of a display unit, processor, transducer and transceiver
unit. The compact design of the display unit allows flexible installation on
the bridge. For monitoring at remote locations, analog and digital indicators
are optionally avialable.