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Vesper Marine AIS WatchMate 850 Transponder and Display VM-WMX850
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Vesper Marine AIS WatchMate 850 Transponder and Display
Vesper Marine AIS WatchMate 850 Transponder and DisplayVM-WMX850

The AISWatchMate Transponder

Includes a built-in GPS receiver and patch antenna

  • Designed especially for highest AIS performance.
  • Winner of two international innovation awards.
  • Nominated for the prestigious 2010 DAME Award.
  • The AISWatchMate Transponder incorporates a built-in GPS receiver and patch antenna with the award winning AISWatchMate collision avoidance display.

    Vesper Marine has designed the AISWatchMate Transponder to help avoid collisions at sea. Using the Universal Shipborne Automatic Identification System (AIS) the AISWatchMate Transponder transmits your AIS data and displays data from all AIS equipped vessels in your vicinity. Audible warning alarms are sounded if a potentially dangerous situation exists.

    The alarm sounds whenever a ship is detected that will come dangerously close even though the ship may still be many miles away. You are alerted immediately with the closest point of approach (CPA) and the time until CPA.

    Unique and customisable alarm and filter settings help to eliminate false alarms. Ships and alarms are displayed in a prioritised order assisting you to safely navigate in crowded shipping areas.

    The AISWatchMate Transponder has a built-in Class B AIS transponder with GPS receiver and GPS patch antenna. It can be interfaced to other on-board electronics and will provide full AIS output. However, it can be used completely stand-alone and it is not necessary to connect it to any other device.


    Integrated AIS Transponder

    Includes a built-in AIS Transponder with two channel parallel receiver and transmitter. This high performance transponder means greater range and increased safety. It also makes installation easier. No external "black boxes" to mount, power and wire. Just plug in a VHF antenna and connect the AISWatchMate Transponder to your 12 or 24 volt power supply.

    Integrated GPS Antenna Includes a built-in GPS patch antenna that provides GPS data to the integrated 50 channel GPS receiver. This internal patch antenna allows for simple installation. However if needed, an external GPS antenna connection is provided and an optional external antenna is available.

    Fully Water Proof Including USB Connection The water proof USB connection can be used to power the AISWatchMate Transponder during configuration and makes for an easy connection to onboard or home computers if required.

    Anchor Watch This is a new feature we have introduced to the AISWatchMate 850 Transponder. It enables you to mark where you dropped anchor and sounds an alarm if your vessel moves outside a preset circle.

    The Anchor Watch feature will soon be available for the AISWatchMate 750 Receiver and 670 Display. Sorry this feature is not available for the older AISWatchMate 650 Display.

    Target Plot Provides a radar-like display of all vessels within the selected range. The display can be oriented north-up or heading-up so it's very easy and natural to interpret. Dangerous and lost targets are readily identified.

    Graphical Plot Shows Crossing Situations Shows the relative position of a target vs. your vessel at the closest point of approach. This provides a graphical view of the crossing situation and clearly indicates whether a target will pass ahead or behind.

    CPA and TCPA Computes the closest point of approach and time until CPA. Alarms may be based on these and other factors.

    Bearing and Range Computes the bearing and range to each vessel. Bearing can be displayed in magnetic to facilitate easy visual identification using your compass and binoculars. Bearings can alternatively be displayed in true or relative to your vessel's heading.

    Prioritization Vessels and alarms are presented in priority order.

    Filtering In crowded operating areas the AISWatchMate Transponder eliminates clutter and false alarms with sophisticated filtering options.

    Identify your "fleet" Targets marked as members of your fleet are displayed with a special icon. Use this to indicate your friends or vessels you commonly work with.

    CPA alarm Triggers alarm if a vessel will come too close. Full control of alarm parameters.

    Guard alarm Sounds alarm if any vessel comes within the specified range. Both CPA alarms and guard alarms may be used together.

    External alarm trigger In addition to the internal alarm, an external buzzer, alarm, or signal light can be interfaced without requiring any additional relays (max 150mA).

    Consise and easy to read displays Uncluttered easy to read display shows all available AIS data.

    Class A and class B Displays AIS data received from all class A and class B transponders.

    Safety messages Displays received AIS Broadcast Safety Messages. These messages may contain important safety, navigation, weather, or shipping information. An AIS mayday safety message can also be sent directly from the AISWatchMate Transponder.

    Aids to navigation Full support for AIS aids to navigation including off-position and virtual aid indicators.

    Meteorological and hydrographic display Displays real-time wind, current, tidal and much more in areas where this information is broadcast.

    GPS receiver Displays built-in GPS satellite status and navigation data such as your position, heading, course and speed.

    Large backlit LCD Adjustable daylight viewable backlit 125mm (5") LCD.

    Easy to use Four buttons control all features. Each button is clearly labeled on-screen. Buttons are backlit for night time use and illumination brightness is controllable. Each setting has on-screen help.

    Ultra-Low power consumption Designed for minimal power consumption the AISWatchMate Transponder is extremely well suited for energy conscious vessels.

    External interface The AISWatchMate Transponder provides complete AIS and GPS output and is easily interfaced to chart plotters, radars or computers.

    Silent Mode Allows AISWatchMate Transponder to be put in Silent Mode.

    VHF "in use" Indicator Unique VHF “in use” indicator (When used with Vesper Marine’s VHF splitter).

    Self Diagnosis Self diagnosis to provide warnings if AIS, GPS or antenna are not functioning.


    Easy installation Installation is simplified with the AISWatchMate Transponder. No external "black boxes" are required. Simply plug in a VHF antenna and connect the unit to your 12 or 24 volt power source.

    Increased Safety Your safety is increased when offshore or in busy traffic areas.

    Safety at night When night falls or the weather is bad it is often difficult to see other vessel's lights or determine their direction. The AISWatchMate shows immediately which way the vessel is moving and will even plot the crossing situation.

    Positive Identification You'll have each vessel's name and call sign and others using AIS will also have yours. If you wish to call another vessel you will be able to ensure you are talking to the correct vessel. This is very important when operating in busy areas or in bad weather when visibility is reduced.

    Operates on very low power Energy concious users know how important low power operation can be particularly on a long voyage when charging from solar or wind. The AISWatchMate consumes far less than a radar, chart plotter or computer.

    Stand-alone unit doesn't require chart plotter, computer or radar The AISWatchMate is easy to interface to these devices but none are necessary for its operation. The AISWatchMate Transponder is a fully stand-alone AIS collision warning solution.

    Anchor Watch The AISWatchMate 850 Transponder includes the Anchor Watch feature, allowing you to mark where you dropped anchor and sounds an alarm if your vessel moves outside a preset circle, indicating that your have begun to drift outside your set radius.

    The unique Anchor Watch screen enables you to see the bearing from your vessel to the marked anchor location, the distance between your vessel and the marked anchor location and shows the periodic position of your vessel as dots, indicating how your vessel has moved while anchored.

    Environmental Watertight (USCG CFR-46, IPx7)
    Number of receivers 2 AIS, 1 DSC (timeshared)
    Receive Sensitivity -113dBm
    Number of transmitters 1 AIS
    Size* 208mm wide x 135mm high x 76mm depth (8 3/16” x 5 5/16” x 3”)
    LCD panel 125mm (5”) FSTN 320x240 backlit
    Operating temperature -25°C to +55°C (-13°F to 131°F)
    Power supply 12-24 VDC 3 watts nominal
    TX Power output 33 dBm (2W)
    External alarm Maximum 150 mA
    Serial data 1 USB port (mini), 1 NMEA input (RS422), 1 NMEA output (RS422)
    GPS 50 channel, TNC for optional antenna
    VHF antenna required PL-259 connector. 50 ohm, max 2:1 VSWR
    Standards IEC 62287, IEC 60945, IEC 61108, IEC 61162, ITU-R M.1371, ITU-R M.825, ITU-R M.1084
    Approvals BSH, BABT, CE, US Coast Guard, US FCC, Transport Canada

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