Improve your yachting or boating experience. While you focus on the enjoyment thereof, let our NMEA devices work for you. NMEA 2000 is a plug-and-play communications standard used for connecting marine sensors, AIS, RADAR, VHF radios and display systems within ships and boats. All sensors and navigation devices can be monitored from one central point, thereby improving safety of lives. Your monitor point can be extended to your smart phone, iPad or notebook.
NMEA 2000, abbreviated to NMEA2k or N2K is standardised as IEC 61162-3. N2K communication runs at 250 kilobits per second and allows any sensor to talk to any display units or other device compatible with NMEA 2000 protocols. Electrically, NMEA 2000 is compatible with the Controller Area Network ("CAN Bus") used on road vehicles and fuel engines. The higher-level protocol format is based on SAE J1939, with specific messages for the marine environment.
Raymarine SeaTalk 2, Raymarine SeaTalkNG, Simrad Simnet, and Furuno CAN are rebranded implementations of NMEA 2000, though may use physical connectors different from the standardised DeviceNet Micro-C M12 5-pin screw connector, all of which are electrically compatible and can be inter-connected.
The protocol is used to create a network of electronic devices, mainly marine instruments, on a boat or vessel. Various instruments that meet the NMEA 2000 standard are connected to one central cable, known as a backbone. The backbone powers each instrument and relays data among all of the instruments on the network. This allows one display unit to show many different types of information. It also allows the instruments to work together, since they share data. NMEA 2000 is meant to be "plug and play" to allow devices made by different manufacturers to communicate with each other. Many manufacturers provide multiplexing and WiFi transceiver functionalities.
Examples of marine electronics devices to include in a network are GPS receivers, auto pilots, wind instruments, depth sounders, navigation instruments, engine instruments, and nautical chart plotters. The interconnectivity among instruments in the network allows, for example, the GPS receiver to correct the course that the autopilot is steering.
NMEA 0183 is a combined electrical and data specification for communication between marine electronics such as plotters, echo sounder, sonars, anemometer, gyrocompass, autopilot, GPS receivers and many other types of marine instruments. IEC 61162-1 (4800 baud) and IEC 61162-2 (High Speed, 38400 baud) standards are used. NMEA 0183 Version 4 includes TAG Blocks, supporting network (LAN / WAN) operations. The NMEA0183 standard is controlled by the National Marine Electronics Association (NMEA).
In leisure marine applications it is slowly being phased out in favour of the newer NMEA 2000 standard, though NMEA0183 currently remains the norm in commercial shipping. Although the standard calls for isolated inputs and outputs, there are various series of hardware that do not adhere to this requirement.
The NMEA 0183 standard uses a simple ASCII, serial communications protocol that defines how data is transmitted in a message from one "talker" to multiple "listeners" at a time. Through the use of intermediate expanders, a talker can have a unidirectional conversation with a nearly unlimited number of listeners, and using multiplexers, multiple sensors can talk to a single computer port.
At the application layer, the standard also defines the contents of each message type, so that all listeners can parse messages accurately. Various NMEA product manufacturers have integrated WiFi into their product, transmitting NMEA messages via UDP and/or TCP messages. Manufacturers also offer Bluetooth communication as an option.
With it, you get marine network data including vessel course, speed, position, wind speed and direction, water depth, AIS messages from vessels and aircraft and other navigation data in popular software applications.
The Router has four physical NMEA 0183 ports (four inputs and four outputs) with configurable speed from 300 to 115200 baud. This allows organization of data exchange between multiple devices with different speeds. Multiple physical listeners can be connected to the Router's outputs.
SeaTalk is a proprietary binary protocol of Raymarine company. It allows co-existence of multiple devices on the bus, so the Router has only one SeaTalk port. A bi-directional converter between SeaTalk and NMEA 0183 supports all known SeaTalk datagrams, including autopilot. This allows controlling SeaTalk autopilots from NMEA 0183 chart plotters and marine apps.
The Router creates its own Wi-Fi network (with range of about 30 meters in open spaces) or it can be connected to an existing Wi-Fi network. The Router has three network data servers which can be configured for UDP or TCP network protocols. For UDP protocol, the number of clients (physical devices or software applications) is unlimited. In the routing settings, you can select one or more outputs (physical port or TCP/UDP server) for any data source, including the same port or server from which data is received.
It is a well matured product with an excellent performance record.
The NMEA0183 USB Data Logger has two (2) input channels set at 4800 bps. The NMEA ports are fully opto-isolated in both directions.
A standard USB memory stick is used to log the data, formatted as FAT or FAT32. One (1) MB stores approx. 35,500 NMEA messages, or 45 minutes of data, subject to the transmission rate of the attached NMEA devices. All NMEA0183 messages are supported and logged in a single log file.
The SmartLog NMEA0183 USB Logger runs off a 12 VDC or 24 VDC power supply. It's power consumption is approx. 0.11A @ 12 VDC. It has reverse polarity protection and an internal self-resetting fuse.
An optional Seatalk adapter can be fitted to one of the ports, supporting Raymarine’s Seatalk 1. The Seatalk messages are encapsulated in a proprietary NMEA message, thereby supporting all Seatalk messages.
You can create a wireless NMEA0183 data link where cabling is a problem. All NMEA 0183 messages are supported, either at 4800 bps or 38,400 bps. The NMEA port is fully opto-isolated in both directions.
The NMEA0183 Wi-Fi Gateway runs off a 12 VDC or 24 VDC power supply. It's power consumption is just 70mA. It has reverse polarity protection and an internal self-resetting fuse.
It can also be managed via the NMEA 2000 network using standard messages.
The Circuit Control is the core component of the digital switching system. In addition to connected buttons, loads can be managed from modern chart plotters, with "virtual buttons" on the Web Gauges of our Wi-Fi Gateway, or automatically from our sensors. To set up additional control posts with duplicate physical buttons and indication, use Switch Control YDSC-04.
Diagrams providing connection examples are available, the one shows how the floating switch and the bilge pump are connected to the Circuit Control. The 16-mm button with integrated LED switches the pump between manual and automatic modes, and indicates the actual state. The pump can be also controlled from your smartphone. The Web Gauges page of the NMEA 2000 Wi-Fi Gateway (which is connected to the 2-Way NMEA 2000 connector) is open on the screen. The pump can also be mananged from buttons connected to the Switch Control (also connected to the 2-Way NMEA 2000 connector).
The manual shows the device terminals in Appendix C,Electrical characteristics of the Circuit Control:
The Circuit Control unit can work in parallel with other units and can be managed from multiple Switch Control units with a matched bank number (252 unique bank numbers are allowed in NMEA 2000). Multiple independent digital switching systems, with different bank numbers can co-exists in a single NMEA 2000 network.
This voyage data can be post processed and analysed, presenting weather conditions, problem diagnostics, logbooks and more. This information will assist with future voyage planning.
The NMEA 2000 Voyage Recorder YDVR-04 stores the data on a MicroSD memory card. Data presented on the NMEA 2000 includes own position, course, speed, depth, water temperature, log, wind speed and direction, and AIS data of nearby vessels. Digital data from the engine water and fuel tanks, battery level, etc. can be included.
The YDVR-04 voyage recorder has an audio input, allowing the recording of a VHF radio, microphone amplifier output or the speaker output of some radio models. Audio data is stored as standard audio WAV files for post processing purposes.
The The NMEA 2000 Digital Thermometer YDTC-13 is housed outside the case on a flexible, 95cm wire in a sealed stainless steel sleeve. The cable can be extended up to 100 meters.
The NMEA 2000 Digital Thermometer YDTC-13 is user configurable to display data as “Air temperature” (default), “Sea temperature”, “Temperature in the refrigerator”, “Temperature in the engine room”, “Bait Well Temperature”, etc.
Temperature data output resolution to a NMEA 2000 network is 0.01°C, accuracy ±0.5°C. To measure extremely hot temperatures we can recommend our Exhaust Gas Sensor YDGS-01, but it has much lower accuracy. For air temperature you can choose our Humidity Sensor YDHS-01, it will also provide you with relative humidity and calculated dew point temperature.
The Thermometer is plug and play. You only need to connect it to NMEA 2000 to get readings on any NMEA 2000 compatible chart plotter or instrument display. It can be used to monitor fridges and freezers, bait wells, air or sea temperature. Up to 50 devices may be used on a vessel simultaneously; this limitation is set by the network specification.
The Thermometer can be configured by user to turn on or off specified channels of digital switching equipment. For example, it can automatically turn on the sea water pump when the temperature in the live well is too high, and also turn it off when the temperature returns to normal (see Section VIII of the Manual for details).
The measurements of the last 48 hours are stored in the Device’s RAM and can be retrieved by compatible software or hardware to provide the user with historical data.
The Digital Barometer provides chart plotters and instrumental displays with barometric pressure data.
This product is designed for weather monitoring. The sensor is located inside the device case. Many chartplotters and digital navigation instruments are able to display data on pressure in the form of graphs (modern Vulcan7, old ST70) or show a trend indicator; this allows tracking of trends in the weather change.
Pressure data output resolution to a NMEA 2000 Version 3 network is 0.01 hPa (mbar), absolute measurement accuracy is ±1 hPa, relative measurement accuracy is ±0.12 hPa. We also recommend our Humidity Sensor YDHS-01, it will provide your instruments with relative humidity, air temperature and calculated dew point temperature.
Device is plug and play, works right our of the box and does not require any settings. Calibration of the Barometer has been performed by the manufacturer. Therefore, you can set an offset from -10.0 to +10.0 hPa for the sensor readings to align with readings from other ship equipment. Programming of the NMEA 2000 device instance, system instance, data instance, description strings is also supported.
The Barometer can be configured by user to turn on or off specified channels of digital switching equipment. The conditions can be either the actual atmospheric pressure or the difference between actual pressure and the pressure 30 minutes or 1 hour ago. This allows a warning to be set concerning the rise or fall of pressure and upcoming weather changes (see Section VIII of the Manual for details).
The measurements of the last 48 hours are stored in the Device's RAM and can be retrieved by compatible software or hardware to provide the user with historical data.
Engine Gateway provides the engine revolutions, motor hours, coolant temperature, battery voltage, warning and alarms, fuel rate and other data which can be displayed the chart plotter. The Y-connector assembly eliminates requirement for extra cables in most instances.
The Engine Gateway is compatible with BRP Rotax, J1939 engines (Caterpillar, etc.) and most Volvo Penta engines manufactured since 2004, and even with some engines manufactured before 2000.
Compatible Volvo Penta engines:
Refer to our J1708 Engine Gateway YDES-04 for EDC I & II, KAD and other older engines.
On most vessels with Volvo Penta engines, all that you need is to plug the device into an empty socket of the NMEA 2000 network backbone and connect the engine cable to a Multilink hub or, using the built-in Y-connector on the engine cable of Gateway, to connect it in series with any of the EVC tachometers.
Some engines require an adapter cable (refer to section IV of manual for details); we offer different adapter cables for a reasonable price.
Factory settings are suitable for most of vessels with one or two engines. In case of two or more engines, one Gateway is enough if they are joined to a single network.
This is a plug and play device; you only need to plug it into a NMEA 2000 backbone. Readings will be sent to the chart plotter and other relevant onboard instruments.
The NMEA 2000 Humidity Sensor is used for:
The NMEA 2000 Humidity Sensor is equipped with a high quality sensor that provides ±2 % RH and ±0.3 °C accuracy in most of the operating range. Operating range is 0-100 % RH and -40 to 120 °C ( -40 to 248 °F ).
The Humidity Sensor sensors support firmware updates and three programming (configuration) methods, please, read this article for details. The simplest way is to use a special installation description string which can be entered for the device in some modern models of chart plotters or in special software. Here you can see a video how to configure the Humidity Sensor and update the firmware using free CAN Log Viewer software.
The Device can be configured to display inside (saloon, cabin) or outside air temperature and humidity. Configuration of the data instance is also supported. For example, “Inside Humidity” with data instance 0, 1, 2 can indicate humidity in the saloon, and the bow and aft cabins. Chart plotters with factory settings are usually able to show only one value with data instance 0, but manufacturers may supply dealers and professional installers with internal instruments to customize chart plotter screens. That allows installation of dozens of humidity sensors in a single network.
The Humidity Sensor can be configured by user to turn on or off specified channels of digital switching equipment. It operates by air temperature, relative humidity and by the difference between air temperature and dew point temperature. In other words, it can ventilate your boat when she needs it or it can turn on the radar if fog is coming.
The J1708 Engine Gateway enables you to monitor engine revolutions, temperature, working hours, fuel rate and other information on the screen of a chart plotter and other display devices on the NMEA 2000 network.
The NMEA 2000 J1708 Engine Gateway YDES-04 supports the two protocols that work over J1708: the standard J1587 used by many manufacturers and the proprietary Volvo Penta protocol used in engines with EDC I, for example KAD 44, KAD 300, TAMD 73..75; also compatible with EDC II (e.g. D12C-A MP).
A J1708 interface is used for connection of gauges, electronic displays, diagnostics equipment and other vehicle modules. This interface was very popular until 2005-2007, when it started to be replaced by the J1939 protocol that is based on a faster CAN network, similar to NMEA 2000.
NOTE: If your engine supports both J1708 and J1939 protocols, it may be better to choose another of our products, the Engine Gateway YDEG-04 designed for J1939, Volvo Penta EVC, MEFI4B, EGC, EDC III and EDC IV engines. The only known exceptions are Volvo Penta marine engines equipped with EDC II (Volvo Penta D12C-A MP for example), where the CAN bus is used for synchronization of engines revolutions and has no other data.
Data includes vessel course, speed, position, wind speed and direction, water depth, AIS messages from vessels and air crafts and other navigational data.
The Device creates its own Wi-Fi network (with about 30 meters range in open spaces) or it can be connected to an existing Wi-Fi network. In the second case, the coverage depends on coverage of the base network; laptops and PCs can be connected to Wi-Fi routers (and the Gateway) by Ethernet; and you can configure remote access to Gateway over the Internet.
Configuring the gateway is easy with any Wi-Fi enabled device (laptop or smartphone) with any web browser. The Device's settings can be reset to the factory values using the hidden reset button.
The Gateway supports TCP and UDP network protocols (both can be enabled at the same time). For UDP protocol, the number of clients (physical devices or software applications) is unlimited.
The Device has a bi-directional converter between NMEA 2000 and NMEA 0183 protocol. NMEA 0183 protocol is widely supported in marine applications dating back to the last millennium. So the Device is compatible with virtually all marine mobile applications (except applications designed for use only with specific hardware) and with most popular PC applications.
Moreover, you do not need to install applications to view real-time vessel data. We added colorful, web-based gauges to built-in administrative web site, and now you can view wind, engine (and fuel rate!), course, speed, depth and other data right from a browser. You can customize any page's layout and its sets of data bars. You can even watch NMEA logs! Save on apps, save on additional instrument displays and monitor your boat from your sofa with a smartphone! No internet connection is required and it is free. See this guide to learn more about built-in web gauges.
The Gateway also supports RAW protocol which allows transferring of any NMEA 2000 messages (including proprietary messages) to applications and back. You can record messages to a .CAN file and/or monitor in real time with free CAN Log Viewer software (Mac OS X, Windows, Linux). It can be useful for NMEA 2000 or J1939 networks setup and troubleshooting.
The recorded .CAN file can be converted to a .DAT format and processed with YDVR Converter software to convert NMEA 2000 data to GPX tracks, spreadsheets and other formats. Of course, it is not as convenient as recording data with the Voyage Recorder, but it is suitable for tests and trials, etc.
The RAW protocol is open and is supported also in our USB Gateway. We hope that it will become popular among software developers, because it is very simple and free.
The Gateway is designed for operation in an NMEA 2000 network and is compatible with a wide range of equipment supporting this protocol. Raymarine SeaTalk NG, Simrad SimNet, and Furuno CAN networks are branded versions of NMEA 2000 and differ only by connector type. Garmin uses the NMEA 2000 Micro connector in its devices, which is compatible with the DeviceNet Micro connector.