Beneteau 373 Conduit Locations

[William C Bonner]

I've decided to replace my old water speed and depth sensors with an Airmar DST810 that connects directly to NMEA 2000. 

I started this project while the boat was in the yard getting work done and have realized the rewiring isn't as straightforward as I was hoping. The length of the N2K drop cable from the sensor is less than the distance from the old sensor via the conduit all the way to the back of the boat and up to the pedestal. That means I'll be wiring from the DST810 to the N2k backbone in a different path.

I've got two possible paths as I see it. 

• Forward along the port side, through the forward cabin, and aft along the starboard side to the panel.
• Aft along the port side, under the galley and across the hull to the panel.

The floorboards at the galley and chart table are screwed in place and I've not figured out if I can run a cable side to side, or if there really is a conduit installed.

Has anyone done a conversion like this in the past that can tell me their wire routing?

Are there conduits from side to side in the deck that I've just not found yet?

[Hal Mueller]

My routing in a Beneteau 323, using Raymarine SeaTalk NG:

Electrical panel/nav table is starboard side midships.

Backbone runs from bow under v-berth, through starboard side settee locker (or behind back cushions?). Drop cable forward for (Airmar?) DST instrument. Short drop cables midships for stereo, AIS, VHF behind nav table/breaker panel. Backbone continues aft along starboard side, up to helm panel (drops for nav display and instruments). Back down into the boat, under master stateroom bed, forward along port side maybe 6 feet. Drops there for autopilot and compass.

So my backbone is a J, but snagging a loop to go up to helm and then back down. Terminating forward under v berth and after under master’s berth.

Hal Mueller
s/v Yard Work
halmu...@gmail.com

[Charlie Swan]

I'm a B361 owner, amd I'd like to know if the info is available for this model. 

Very very helpful

Cheers

Charlie Swan

D/V Swoon in Bermuda

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[William C Bonner]

Are you referring to the diagram that I copied from the PDF I'd found for the B373 some time ago? You can search for a full PDF for your boat or look at https://www.manualslib.com/manual/929849/Beneteau-Oceanis-361.html?page=24#manual

[William C Bonner]

Thanks for the details. My N2k network currently terminates at my nav station with connections to AIS, Stereo, a Raspberry Pi, Victron Cerbo GX, and a yacht devices barometer. From the nav station the backbone runs aft along the starboard side, around the back and up to the pedestal. In the Pedestal it's using a STng to Seatalk converter to connect to the old raymarine wind instrument and autopilot and a devicenet drop to the B&G Zeus 3s chartplotter. I m also adding a B&G Triiton2 display for dedicated speed and depth. 

I've thought of running the N2K backbone up the mast so I can swap out the old wind instrument with a Maretron WSO200 Ultrasonic wind and weather station https://www.maretron.com/products/wso200-ultrasonic-wind-and-weather-station/ but that's another project. ;-)

[George Harris]

I was struck when I read your post, it got me thinking. Sailing nav for small boats has come a very long way in a short time. I started in 98 or so and a hand held garmin showed you a lat/long (numericaly, not visually) and it was considered miraculous. 

I was thinking had I seen it back then I wouldn’t have had a clue WTF you were talking about.

I’m no luddite, I love all this new tech but it’s so amazing to think of a bunch of satellites circling the globe, everywhere, to give us nav data, voice, email, tv etc etc while no so long ago it was paper charts, dead reckoning and a sextant. 

Keep your passport handy 

On Mar 13, 2025, at 10:45 PM, William C Bonner <wimb...@gmail.com> wrote:

Thanks for the details. My N2k network currently terminates at my nav station with connections to AIS, Stereo, a Raspberry Pi, Victron Cerbo GX, and a yacht devices barometer. From the nav station the backbone runs aft along the starboard side, around the back and up to the pedestal. In the Pedestal it's using a STng to Seatalk converter to connect to the old raymarine wind instrument and autopilot and a devicenet drop to the B&G Zeus 3s chartplotter. I m also adding a B&G Triiton2 display for dedicated speed and depth. 

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