Raymarine ITC-5 simplifies older ST instruments

I am always on the look out for ways to make my instruments and network more reliable and future-proof on Grace. One of the last instruments left that I hadn’t addressed was the Raymarine ST60 wind display. A while ago I came across the Raymarine ITC-5, which does not seem to have been marketed much as a solution to help with older instruments and newer networks. It seemed perfect to help increase the quality of my network while replacing some old pieces.

Grace came with Raymarine ST60 series wind and depth instruments which use the rather old Raymarine SeaTalk1 protocol. My original solution to bringing this data onto my NMEA 2000 network was to use a SeaTalk1 to SeaTalkNG converter (scroll down a bit) connected to a SeaTalkNG network, which was also cross connected to the rest of the NMEA 2000 network. I eventually replaced the dual thru-hull depth sensors with a single Maretron DST110, which is native NMEA 2000. That left the wind instrument at the top of the mast, and the ST60 wind display.

For more details on my network, please see the most up-to-date diagram here.

When I added the i70s displays recently, I simply took the ST60+ display part and hid it under the steering station. This worked for a while until it came unplugged at a rather inconvenient time, so I decided to install the ITC-5, which I had purchased a year or so ago.

The main unit is a beefy piece of plastic and comes with a SeaTalkNG cable, packet of connectors and screws, and a manual. I planned on removing the SeaTalk1 to SeaTalkNG converter, which was being used only for the ST60, and replace it with this, so the SeaTalkNG device port (the white one) would work perfectly.

One of the main reasons for installing this was to prevent the cables from coming unplugged from the back of the ST60. The ITC-5 has a very secure cover with clips, and a screw to keep it in place, as well as passthroughs for the wires coming in either side.

The front cover has a great big rubber gasket and angled entry points to help retain the wires as much as possible.

The main part of the unit has copper connectors that are clearly labeled and ready for connectors for Speed/Temp, Wind, Compass, Rudder, and Depth. There are several ways to connect Wind instruments depending on the model and type.

Each bank has a light which will indicate successful data transfer and connection. The unit itself has status lights similar to the SeaTalk1 converter right near the SeaTalkNG connector cable, and outside the cover so you can quickly see if data is flowing and power is on.

For my particular situation, I was only going to be using the Wind part. I removed the original ST60 and clipped off the older connectors. Using the ones included with the ITC-5, I put brand new connectors on each wire, and then began the contortions to get the unit in place.

In the photo above, I was testing the system and used the old connectors. You can also see the SeaTalk1 to SeaTalkNG converter in the upper right.

The install was pretty straightforwards. I didn’t have to configure anything on the ITC-5, simply plug in the connectors, put the cover on and route the cables, clip it shut, put the screw in, and done. The cable is tightly held by the rubber, and there is little chance the connectors will come undone again.

On my i70s I was able to choose to calibrate the ITC-5 wind settings by pointing the boat into the wind. No other adjustments were required. The wind data was showing up on the network perfectly.

I eventually plan on replacing the instrument at the top of the mast, but I have not found a good solution just yet. On Jammy I had a Maretron WSO100 ultrasonic sensor, but it was quite an ordeal to find space at the top of the mast for it. Other manufacturers have interesting concepts, but the most reliable seem to be similar to what I already have, but with NMEA 2000 cabling.

The ITC-5 allows me to get a bit more life out of the existing one with a much more reliable connection.


5 thoughts on “Raymarine ITC-5 simplifies older ST instruments

    • I didn’t really have a lot of options for where to locate it – the existing wires from the old ST60 were in my steering station at the helm, where the old instrument used to be mounted. For now, I simply added new, fresh ends to that cable, and mounted the ITC-5 to the inside of that station using a couple of screws into a wood edge that was inside.

      Longer term it makes sense to find that cable somewhere else, perhaps the lazarette or maybe even the navigation panel area down below, cut it, add ends, and put the ITC-5 there.

  1. Hi Steve: You have a great blog site, I visit it and Panbo weekly, if not every day to get ideas. I have a 1999 Beneteau with 19 year old Raymarine instruments. I’v e recently been having problems maintaining GPS and depth data on my RL70C chart plotter so I have ordered a Axiom Pro 9S, a Quantum 2 radar, and an i70s multifunction display. I have also ordered a SeaTalk1 to SeaTalkNG converter to, hopefully, get my ST6001 autopilot to play nice with the Axiom Pro. My speed, depth and wind instruments are all Autopilot ST 50s. In this regard, I have ordered the ITC-5 in hopes that it might convert the depth and wind instruments. My issue is that I have a DSM 300 a digital sounder module been my ST50 depth and my Airmar P319 transducer. While this could all work, I want to prepare for disaster.

    In the regard, I see that you have the Maretron DST110 transducer interfaced with your Axiom. You called it “quirky” in one of your posts? I currently have a small Maretron Devicenet backbone fo my Fusion stereo, Vesper Vision AIS and Maretron DSM410. I chose Maretron because of the quality of their cables and the desire to add their tank sensors and communication devices in the near future.

    My questions to you therefore are, am I on the right track with the SeaTalk1 to SeaTalkNG converter and the ITC-5? Also, should I buy the Maretron DST 110 or should I buy Raymarine options?

    Thanks in advance, Steve, for any advice you can send my way. Keep up the great work with the blog! It is a fantastic resource!

    • Hi Bryan,
      Thanks for the kind words!

      Sounds like you are doing a decent size instrument upgrade. It sounds like you have a solid base – the i70s is required to configure the transducers once you move them to the ITC-5, so that is a good piece to have.

      Raymarine’s documents on the ITC-5 are a bit light, and I was worried my ST60s would have issues, but I had none. Calibration of the wind instrument was the only required step after moving the wires over to the ITC-5. They do cite your instruments in some of the documents, so I would guess you won’t have any issues. Just connect up the wires from the back of the existing displays to the correct points on the ITC-5, and the data should all be on the SeaTalkNG network.

      I’m not sure I understand your comment on your DSM 300 and Airmar P319? If this is already working with the ST50, shouldn’t it work with the ITC-5?

      The DST110 had some issues early on with the Axiom, but it turned out to be a config issue which has since been resolved. I don’t have any issues now with the DST110. I had one on my previous boat as well, which was mostly Navico/Simrad/B&G and had no issues.

      I have a lot of Maretron too – DST110, multiple tank monitors, DSM410, USB100 interface, ALM100 alarm, etc. They are all on my NMEA 2000 network, which is connected to the SeaTalkNG network as well using a conversion cable. So essentially, the SeaTalkNG and NMEA 2000 network are one in the same, just using different cables at different parts of the network, and named differently.

      I prefer choosing non-specific manufacturer components for things that aren’t super complicated, and don’t need some deeper level of integration. I moved to a LCJ Capteurs C7 ultrasonic wind instrument, and the DST110 for depth/speed/temp as they seem to be better built and more widely supported than specific Raymarine stuff. That way I can know those devices can share their info with other devices without much problems, and it does not lock me into a Raymarine-only system.

      Where I use single vendors is things like Radar+ChartPlotter+AutoPilot because those do not seem to play well between vendors, if they can at all.

      For your setup, the SeaTalk1 to SeaTalkNG converter for your autopilot seems required for sure if you want it to work with your new Axiom, and be able to get speed and wind information as well. I assume the ST6001 is getting that info via SeaTalk1 from those other instruments. The ITC-5 will get your wind/speed/depth info on SeaTalkNG as well, and thereby NMEA 2000 if you connect those busses together. You could also put a DST110 in for depth/speed and negate having to have the ITC-5 for that. If you’re going to replace your wind instrument too, consider a NMEA 2000 version, and you wouldn’t need the ITC-5 at all.

      Hope this helps!

  2. Hi,

    Hi Steve, thank you for advise.

    This is not not exactly on a Raymarine instruments subject, but I would like to put one additional comment anyway.
    This device helped me enormously, when I went from Simrad IS12 instruments to B&G Triton2. IS 2 has build-in converter, but Triton is NMEA 2000 only. So i was able to hook up my old Airmar transducers to the this device and therefore to N2K bus. So now I have depth, speed, temperature on all B&G instruments and Garmin chartplotter.

    Thank you for your advise and blog.

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