Expedition Expedition Navigation Software

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Technical Q&A » Using calibrated boat speed sent to GNX 120 » 5/23/2019 1:39 pm

benhowett
Replies: 10

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RagnarJW wrote:

I have not found a way to point the GNX displays to use a certain source for data.

Menu > Setup > Data sources.
 

Networking Issues » calculated vs raw data » 4/26/2019 11:00 am

benhowett
Replies: 1

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Raymarine has historically not supported sending True wind values and there are additional difficulties with N2K not having definitions for TWD.

Your best solution is likely to have Exp calculate these values.
 

Networking Issues » Actisense W2K-1 » 2/12/2019 2:19 pm

benhowett
Replies: 6

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Nick is correct that the current firmware is only streaming data in 0183 format - however it is on their roadmap to stream native data in the same format as their NGT-1 n2k>usb adapter so all hope is not lost. Unfortunately, I don't have any timeline on when this might happen...

Technical Q&A » Logging - Missing True Wind Info » 11/16/2018 3:07 am

benhowett
Replies: 14

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Hi Axyl - Can you upload a full log file which demonstrates the issue?

Networking Issues » B&G - Conflicting calibrations; Zeus vs. H5000 » 11/10/2018 6:10 am

benhowett
Replies: 2

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It's worth noting for anyone stuck with this in the future that many of the 'smart' depth transducers can be calibrated internally, as well as most systems being able to calibrate the received depth and rebroadcast - This is why people are finding more than one calibration value. Its worth checking your sources and seeing whether your display is pulling depth from a processor, or directly from the N2K bus and trying to standardise this, and to pick a calibration point and stick with it rather than mixing and matching.

General Discussion » Set & Drift - B&G versus Expedition » 10/05/2018 4:27 am

benhowett
Replies: 7

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Perhaps obvious but worth checking - Are you doing any calibration or calculation within Expedition? Recalculating Leeway, for example, would have a big impact if the numbers were even slightly different.

Networking Issues » Garmin Quatix 3 » 6/12/2018 10:58 am

benhowett
Replies: 5

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Keith: Suggest you get in touch with Diverse Yachts in the UK. They have custom firmware for one of the Garmin 4" displays that allows streaming all instrument data to the Quatix over wireless Ant+,  including custom channels from Expedition.

Technical Q&A » Predictwind Integration for pro subscription » 9/15/2017 12:39 am

benhowett
Replies: 1

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The Predictwind tidal data is sourced from tidetech and appears to be identical to what you would receive with a direct subscription.

The grib files are fully supported by Exp - the only issue is that at the moment Predictwind current information cannot be downloaded directly through the Exp interface. Wind gribs can be downloaded directly within Exp, Current must be downloaded externally (for example through the Predictwind offshore App) and then imported.

General Discussion » Optimizing boat performance » 8/30/2017 3:32 am

benhowett
Replies: 9

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Something to add to this: Calibrate Calibrate Calibrate.

Before you can start to use the numbers for performance you really need to be able to trust the numbers and the vast majority of boats I'm involved with massively under estimate the time and effort required to really get this right.

Understanding when the numbers might be wrong, and when they are probably right but actually showing something unexpected is critical and much of the role of the navigator is communicating this effectively.

Technical Q&A » Pinging line by RIB » 5/12/2017 12:29 pm

benhowett
Replies: 2

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Pinging a mark is pinging a mark - it doesn't matter what boat you do it from: the result is a long and lat of a mark position.

The bow offset allows you to ping a mark some distance away from your actual gps position (typically a boat length) but it doesn't affect the position stored in Exp so that number can be taken from SIs, a hand GPS, or anything else.

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