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Navigating and living on the waterways of Continental Europe and news of canal developments. (Public)
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TOPIC: AIS - help

AIS - help 03 Aug 2021 06:46 #124797

  • Colin Stone
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And this morning:

Warship positions faked including UK aircraft carrier
In June, AIS data showed HMS Defender and HNLMS Evertsen of the Dutch navy leaving port and heading to a naval base in Sevastopol, in Russian-annexed Crimea.
But photographs showed the ships were still in port at Odessa, Ukraine.
A few days later - when HMS Defender did in fact enter waters near the coast of Crimea - it was shadowed by Russian military planes.
www.bbc.co.uk/news/technology-58027363

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Colin Stone
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AIS - help 02 Aug 2021 19:07 #124793

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>The pusher was under 20m so didn't have AIS.

Yes, it it can be a nuisance when a pair of coupled 38ms only have the length of one 38 displayed on AIS.
But otherwise more useful than not.
There is a messaging system in AIS but unfortunately the software used to display the geo info doesn't include the messaging side. Could be useful with language differences.

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AIS - help 02 Aug 2021 19:01 #124792

  • Pete Milne
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Les Easom wrote: Many thanks to you all for the advice, comments and tales of times past.
I thought we were going to get to " by the Mark Twain!"

I have actually done that on a sailing boat. My only two interesting uses of AIS over the years were good and bad...
1. Looking ahead at a queue of commercials waiting for a lock and being able to ask the lock if I could come in with XXX, then weaving along the queue past a dozen 'big boys' giving us the thumbs up.
2. Waiting at a lock, with a commercial across the canal, nothing showing on the AIS, so we both assumed small boats in the lock and left a small gap between us. Then the lock opened and a push tow the whole width of the lock emerged. We and the commercial backed off rapidly to make space. The pusher was under 20m so didn't have AIS.

Pete
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Pete Milne, Quo Vadis , Gent.

AIS - help 02 Aug 2021 18:36 #124791

  • Les Easom
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Many thanks to you all for the advice, comments and tales of times past.
I thought we were going to get to " by the Mark Twain!"

Thanks again

Les
Martin-Pêcheur

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AIS - help 02 Aug 2021 17:47 #124790

  • Peter Cawson
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> The echo sounder was the height of technology and we considered ourselves very lucky not to be outside hanging overboard swinging the lead!

Racing a 1922-built Sunbeam keel boat in the Solent, we used a bamboo cane to assess depth as shouting "Water Please" when in more than 6 ft of water was frowned upon!

> I will still keep paper charts, a good pair of binoculars and a pair of well peeled eyes handy.

Couldn't agree more - 2 pairs of eyes and 2 pairs of binoculars at times on the Rhine.

Colin - Aren't we lucky to be able to take advantage of this totally free but possibly slightly too accurate technology? Why is it that superyachts seem to be accident prone? 2 weeks ago the 80 m motor yacht Amaryllis that's been moored here at Gunwharf Quays for several weeks was rammed by the 48 m Constance as the latter was mooring up with the pilot still on board. It mysteriously stuck in reverse and a dozen crew members quickly emerged from the 2 vessels to sort things out.

Peter

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AIS - help 02 Aug 2021 16:59 #124789

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>The GPS had all Solent and Channel marks pre-loaded and it was linked to the autopilot so I could pick the next nav buoy as a target......

A very, very expensive luxury motor yacht was in the Channel on its delivery voyage and using nav buoys as GPS targets for the waypoints. The motor yacht rammed a buoy and sank. Quite a court case afterwards.

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AIS - help 02 Aug 2021 16:54 #124788

  • Balliol Fowden
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You had GPS! And an Auto-Pilot! Eee thou were lucky. When I was young we had to manage with a trailing log and a depth sounder to track the contours. The echo sounder was the height of technology and we considered ourselves very lucky not to be outside hanging overboard swinging the lead!

And you had to keep awake through “sailing by “and the shipping forecast. None of this looking things up on t’internet.

And we had to to live with a chap called Feldman and 100 others in an old oil tank on a council tip.

New technology, new techniques, all making life so much easier, but I will still keep paper charts, a good pair of binoculars and a pair of well peeled eyes handy.

Balliol.
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AIS - help 02 Aug 2021 15:37 #124787

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> Having found AIS invaluable during our sailing days (once entered Cherbourg harbour in thick fog solely by AIS getting us from red bouy to red bouy thus avoiding the main channel and the ferries)

I've got receive-only AIS on my boat (and radar) but I must admit I've never turned either of them on. 700 km down the Rhine in 2019, the chart plotter and binoculars were helpful but I noted that this is a waterways I wouldn't like to travel in poor visibility. With AIS and radar, I suppose it would be do'able if I had experience with these devices!

In my sailing days (in the last century and long pre-AIS) I found myself leaving Cherbourg harbour in fog but the very primitive Raymarine GPS device kept us safe, as it did in a much more scary place - leaving St Malo in what suddenly turned into a pea-souper. The GPS had all Solent and Channel marks pre-loaded and it was linked to the autopilot so I could pick the next nav buoy as a target and the autopilot took us directly there, despite the cross current. Still pretty scary as I couldn't "see" any other boats, but at least we were out of the main channel. How did anyone survive pre-GPS, let alone AIS or radar?

Peter

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AIS - help 02 Aug 2021 14:56 #124786

  • Judy Evans
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Having found AIS invaluable during our sailing days (once entered Cherbourg harbour in thick fog solely by AIS getting us from red bouy to red bouy thus avoiding the main channel and the ferries) we had no hesitation in installing on our mere 10.7m Linssen when we ventured onto the European Inland Waterways. We can ‘see’ the big commercials out of sight around the bend as well as alert them to our presence too! Obviously we still keep a good watch but AIS for us was a ‘no brainer’.

Judy EVANS
MV Mon Amie

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AIS - help 02 Aug 2021 14:44 #124785

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I was slightly skeptical about the need for AIS on a 17m shared barge that I part owned. However, having travelled on busy Belgium and Dutch waterways last year, I was pleased that it was installed. The system usefully showed cross traffic and relative movement. Obviously, it also showed our presence to commercial ships and those private ones fitted with AIS. As ever, helm and crew and crew needed to stay alert but I felt that AIS was a useful safety feature. Good luck, Brendan

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AIS - help 02 Aug 2021 09:15 #124771

  • Jan Pieterse
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BUT just like radar, it is nice to impress friends
just as the machine which does ping. ( Monty Python reference )

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AIS - help 01 Aug 2021 23:35 #124768

  • Andy Soper
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Hello Les,

AIS is only required on boats over 20 m in length. Relax.

It does help give traffic information both at sea and inland - but not essential.

Keep looking out of the window and stay safe!
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Best Wishes
Andy Soper
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AIS - help 01 Aug 2021 23:22 #124767

  • Les Easom
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Our Dutch-built boat is currently based in France but we are thinking of moving north to Holland with a view to selling.

From a position of complete ignorance -

what exactly is AIS?
how do we connect to it?
is it necessary in Holland?
is it advisable antway?

thanks

Les Easom

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