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Old 11-09-2016, 15:37   #16
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Tore, are you able to have a look somewhere very busy and see if many class B signals are getting through via satellite? Seems like they do OK in the quiet part of the world. Prehaps not so well in busy areas?

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Old 17-09-2016, 09:59   #17
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Here´s further proof that Marine Traffic´s AIS-SAT tracking works fine on
´B´class AIS transponders even far off-shore or mid-ocean.

At a low subscription cost of $ 16.- p.m. it is a well worth investment to keep
family and friends informed of your position at all times.


Tore
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Old 17-09-2016, 10:35   #18
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Quote:
Originally Posted by sinbad8 View Post
Here´s further proof that Marine Traffic´s AIS-SAT tracking works fine on
´B´class AIS transponders even far off-shore or mid-ocean.

At a low subscription cost of $ 16.- p.m. it is a well worth investment to keep
family and friends informed of your position at all times.


Tore
Isn't a Spot cheaper and more fit for the application of "keep
family and friends informed of your position at all times"
??

Spot = $10/month to as many people as you want
MarineTraffic = $16/month per receipient

I would guess Spot is more reliable, MarineTraffic even states there are issues with Class B and satellite.
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Old 17-09-2016, 11:22   #19
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Re: Marine Traffic 1 vessel AIS Satellite tracking

DotDun...

Yes, SPOT is a very cheap solution coupled with Spotwalla. I HAVE a SPOT and used it for many purposes.

I have also used Spotwalla to trace vessels with inReach sat phones,which are also a good if somewhat more expensive method.

My suggestion was mainly aimed at people with AIS transponders,which also enables them to be seen by other ships. To be able to follow them across the oceans for just $16.- per month is pretty good I think. You can stop the subscription ANY time.

Tore
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Old 17-09-2016, 12:00   #20
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Quote:
Originally Posted by sinbad8 View Post
Here´s further proof that Marine Traffic´s AIS-SAT tracking works fine on
´B´class AIS transponders even far off-shore or mid-ocean.

At a low subscription cost of $ 16.- p.m. it is a well worth investment to keep
family and friends informed of your position at all times.


Tore
At times it works, at times it does not.

Some B units give a better footprint, others do not.

Many variables.

And btw Marine Traffic is not who does the job. All heavy lifting is done by one or two companies that run the satellites. Unless there was some ownership change that I am not aware of.

If I were to buy the service, I would buy at source, not from an intermediary.

b.
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Old 17-09-2016, 14:19   #21
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Re: Marine Traffic 1 vessel AIS Satellite tracking

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Originally Posted by sinbad8 View Post
DotDun...

Yes, SPOT is a very cheap solution coupled with Spotwalla. I HAVE a SPOT and used it for many purposes.

I have also used Spotwalla to trace vessels with inReach sat phones,which are also a good if somewhat more expensive method.

My suggestion was mainly aimed at people with AIS transponders,which also enables them to be seen by other ships. To be able to follow them across the oceans for just $16.- per month is pretty good I think. You can stop the subscription ANY time.

Tore
How is $16/month for less reliable service 'pretty good' when Spot is $10/month for unlimited viewers

Do you work for MarineTraffic??
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Old 17-09-2016, 14:27   #22
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Barnakiel..

I think most sailboats with an ´A´class AIS transceiver,who have the right kind of antennae,compensating for heeling,will in most cases be tracked by the satellites,
certainly sufficient to give you a good track.

As for buying direct from the satellite company,show me ONE who offers a 1 ship track by AIS-SAT,every 20 min. at $ 16.- per month, and I´ll change my provider TODAY!

Nothing´s PERFECT, but this is as close as you get without extra equipment and BIG bucks...

Tore
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Old 17-09-2016, 14:39   #23
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Re: Marine Traffic 1 vessel AIS Satellite tracking

DotDun..

I am only here to share with my fellow cruisers what I have discovered.
To my knowledge I have never seen a similar AIS-SAT offer here.

Whether to use the AIS-SAT service from MT or a SPOT dongle is at the discretion of the user.

As for your last question,no, I wish I was.


Boa Noite from Brazil.....
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Old 30-03-2018, 01:59   #24
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Just to report my actual experience.
MT does not actually offer a monthly fee SAT extension but only an yearly fee and there is no way to "try" the service. So I have purchased the one year SAT extention (not so cheap) but it is not working. I mean... the AIS B installed on the boat, which is actually between Barbuda and Bermuda, is not heard by the SAT network so I completely lost the signal 3 days ago when the boat left Barbuda. Obviously no probs via the terrestrial net.
In my case it would be absolutely acceptable to get a position report every, let's say, 12 hours, but nothing at all during more than 3 days is obviouslt not acceptable. I believe that there are other AIS B which are heard time to time, but it is not my case. It is only acceptable to pay for one month fee to try the service, but not for 1 year.
So I am NOT saying that the service does not work (I am sure it does), but that the 95% of the sailboats mounting AIS B should be put in the condition for a try before buy.
I have now applied for a refound and I will let you know how it goes.
Mike
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Old 30-03-2018, 07:53   #25
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Thanks for the update Mike.

I wonder if other tracking sites have more class-B-friendly plans. Maybe the signal strength on class B systems simply can't reach the satellites.

It would be great to be able to do what the OP suggested. So if it doesn't work, that's really good information to have, too.
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Old 30-03-2018, 09:47   #26
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Hi Capt Tom,
2 watts means really low power also in line of sight... so it sometimes "could" work and I believe most of time it will not. When you purchase the product there is also a kind of disclaimer which says "it could not work", but nothing about statistics of how many ais b are kept kept and how many are not. It is a kind of roulette bet lol.
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Old 30-03-2018, 11:06   #27
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Re: Marine Traffic 1 vessel AIS Satellite tracking

It's a power issue, and possibly a message collision issue. I've used Marinetraffic.com to monitor Class B vessels and the reporting interval is extremely spotty -- from hours to days. I suspect that the variability is due in part to the amount of nearby Class A ships.
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Old 01-04-2018, 18:25   #28
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Re: Marine Traffic 1 vessel AIS Satellite tracking

Marinetraffic does offer a 1 month service and I have turned it on and off many times. It is hard to find on the site. I think I go to my vessels and look for the option there. It is AUD20 pm.

I have said this many times on Cruisers Forums, but Sat tracking works great with AIS Class B. But you need to spend the money and put in a proper dedicated aerial and not use a splitter on your poor VHF aerial.
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Old 02-04-2018, 03:11   #29
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Re: Marine Traffic 1 vessel AIS Satellite tracking

You can buy a single month, for single vessel, Sat tracking with Marine Traffic at ‘My Fleet - Extensions - Satellite Fleet (0 vessels), click Purchase and can select a monthly for AUD20.16. You then go to your Fleet and turn on the Sat tracking for that vessel. They cancel no problem at any time, just pay for that month.
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Old 02-04-2018, 05:34   #30
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Re: Marine Traffic 1 vessel AIS Satellite tracking

The point that most are missing is that ALL AIS TRANSPONDERS (A and B) ARE VHF, so once out of reach fron a land based station, your vessel is invisible to the tracking service provider. They are not (and never meant to be) a satcom device like an EPIRB
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