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Re: [Amel] AIS
jlm@jlmertz.fr
Eric,
Usually I see the first the ship that is with me in a collision track, and I call the ship, in all cases they see me but they NEVER realized that I am a sail boat under sail.... Perhaps you have right, 5 miles seam me a little low, but it is enough. Jean Luc 26/11/2013 20:59, Sailorman a écrit :
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Re: [Amel] AIS
Sailorman <kimberlite@...>
John-Luc, I can also see targets at over 100 miles sometimes with my class B unit. However I have spoken with many ships over the last few years and they only see ne at 5 miles more or less. My separate antenna is mounted on my mizzen. Fair Winds Eric Amel Super Maramu #376 Kimberlite
From: amelyachtowners@... [mailto:amelyachtowners@...] On Behalf Of jlm@...
I cannot agree with you ! Le 26/11/2013 20:39, Sailorman a écrit :
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Re: [Amel] AIS
jlm@jlmertz.fr
I cannot agree with you !
On cottonBay I can see targets at more then 300 miles ! Important is that the antenna is on the main mast. Jean Luc on CottonBay Le 26/11/2013 20:39, Sailorman a écrit :
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FW: [Amel] AIS
Please keep in mind that a class A unit can transmit data as fast as every 2 seconds at 12.5 watts. This is verses every 30 seconds at 2 watts for a class B. I don’t feel like doing the math but that is a huge drain in battery amp hours.
Also, being a little realistic here. If I see a tanker on my AIS I am going to take evasive maneuvers regardless of right of way (and radio them my heading and speed). I do not necessary need for the tanker to see me on AIS as much as I need to see them.
Best regards,
Mark
SM2K #275 www.creampuff.us
From: amelyachtowners@... [mailto:amelyachtowners@...] On Behalf Of Sailorman
Sent: Tuesday, November 26, 2013 2:41 PM To: amelyachtowners@... Subject: RE: [Amel] AIS
WE have a see-me transponder but I still would rather have had a class a unit. Fair Winds Eric Amel Super Maramu #376 Kimberlite
From: amelyachtowners@... [mailto:amelyachtowners@...] On Behalf Of Kent Robertson
I too have heard that ships don't always monitor AIS B, but that it is getting better than it was initially. I do not use a transponder, but the AIS receiver is a great addition to my equipment. I might consider a radar amplifier rather than an AIS transponder to make sure I am seen by all ships running their radar. It's not terribly uncommon to see ships that are not transponding their AIS signal, but I would think that almost all would be running radar at night. Kent SM 243 Kristy
I am using the Free version of SPAMfighter. |
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Re: [Amel] AIS
Sailorman <kimberlite@...>
WE have a see-me transponder but I still would rather have had a class a unit. Fair Winds Eric Amel Super Maramu #376 Kimberlite
From: amelyachtowners@... [mailto:amelyachtowners@...] On Behalf Of Kent Robertson
I too have heard that ships don't always monitor AIS B, but that it is getting better than it was initially. I do not use a transponder, but the AIS receiver is a great addition to my equipment. I might consider a radar amplifier rather than an AIS transponder to make sure I am seen by all ships running their radar. It's not terribly uncommon to see ships that are not transponding their AIS signal, but I would think that almost all would be running radar at night. Kent SM 243 Kristy
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Re: [Amel] AIS
Sailorman <kimberlite@...>
Richard, Remember a B class unit is only visible 4-6 miles since it is 2 watts. Next tine I would go with an A class unit that is visible closer to 20 miles as it is 15 watts. Fair Winds Eric Amel Super Maramu #376 Kimberlite
From: amelyachtowners@... [mailto:amelyachtowners@...] On Behalf Of richtate@...
Hi, I’m looking for feedback on AIS transponders. We have, and like, the MarineGadget AIS receiver USB dongle (www.radargadgets.com) that overlays nicely targets on a Asus netbook running OpenCPN but my wife wants to have the option for us to broadcast our position to shipping traffic. From what I’ve read the Vesper Marine device(s) can send AIS target data wirelessly and we’d like to have the targets repeated on our iPAD running Garmin’s BlueChart Mobile app. Anyone have experience with this setup? Thanks Richard |
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Re: [Amel] sheets for Maramu
Dave_Benjamin
Your inference that China Sail Factory and Lee Sails are connected is rubbish. China Sail Factory produces sails only for sailmakers. Lee Sails sells to the general public. There is absolutely no connection between the two companies. China Sail Factory is well regarded in the industry as a premium producer. Nigel Calder has written at least 3 articles about China Sail Factory, the latest covering some of the cutting edge technologies in use there. I'd be happy to send anyone interested a detailed article about the shortcomings of Lee Sails accompanied with photos. They are built to lower standards than used by reputable sailmakers and tend to be shapeless white triangles. ---In amelyachtowners@..., <annejohnholl@...> wrote: Hello Charles,This is a copy of an message I sent to the group
when the topic was how to get the Amel logo onto sails. It was rubbished by two
members who even referred to a website which decries Lee Sails. They did not
point out the two pieces on Lee/China Sail which are in the files section saying
how good they are.
I have to say that I thought that this was unnecessary and
quite uncalled for. They are entitled to promote their expertise and or
favourite sailmaker. I did not point out that my expertise is the result of
spending five years of my life training to crew in the Americas Cup, ten years
crewing in yachts winning international ocean races in the British teams
and twelve years cruising in an Oyster 435 with my wife from the UK to NZ and
Australia including five Atlantic crossings. I only tell you this in the hope
that they will not repeat their actions. I only wish to repeat that I have no
hesitation in recommending Lee Sails. Incidentally the main and genoa had
vertical battens so that the sail could be made larger and thus better and not
suffer from an ugly negative roach as well as being kitted out with camber
stripes and telltales on main and genny.
Anne and John, Bali Hai, SM2K 319 for sale in Malta,
annejohnhollatgmail.com
28/09/2013
“We had the three white sails made for Bali Hai by
Lee Sails in Hong Kong for less than €7000 including delivery to Malta in under
four weeks. They were ordered via the Maltese sailmaker who sent them all the
details including my request that one of the camber stripes on the main should
be incorporated into the Amel logo. The sails are very good and are flatter than
the original sails made by Gateff and the main also has vertical battens thus
enabling much less negative roach I did also get a quote from Gateff which is, I
believe, part of Doyle Sails. Luckily it was twice as much as the quote that our
local sailmaker got from Lee Sails thus making the decision easy”.
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Folder for helpful Amel advice
Danny and Yvonne SIMMS
Hi John, great idea. I did the same from the start, a folder called Amel advice into which I drop all messages that I think may be of value to me in the future.. Cheers Danny SM299 Ocean Pearl From: Anne and John Hollamby
To: amelyachtowners@... Sent: Wednesday, 27 November 2013 1:29 AM Subject: [Amel] S.ails The right subject address is very hard to find and impossible
if the question or advice is wrongly headed or too specific. A good example of
this is the recent subject “Sheets for Maramu” which would never be
traced by someone looking for help on any sort of advice on sails. Hence this
message (sent by clicking the reply button) which will make the info traceable.
Hence my recent message “ Climma Replacement Capacitors” would be very hard to
find in a search unless all three words are given to the search box. I am
suggesting that we should use generic terms in our subject matter.
On a different matter there are 15,000 messages on this site
and each subject chosen normally ends up with a useful reply and thus is the one
to look for but may be hard or impossible to find at some future
date.
I have therefore made a folder in my Gmail account headed Amel
advice over three years ago and it is now three folders as the site appeared to
have a limited capacity and my first one started deleting the oldest entry to
make room for the new ones. Thus I have collected about 150 messages giving the
best advice and often listing all the advices/questions that are linked and
avoiding the other three thousand or so other messages.
I hope this helps, Anne and John, Bali Hai, SM2K 319,
for sale in Malta |
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Re: [Amel] AIS
Alexandre Uster von Baar <uster@...>
Hello Ian,
toggle quoted message
Show quoted text
I am not a technical person, so according to the technician which I trust (he is a friend of a friend). The "splitter" is only ok for AIS "receiver" only. Before, I had a receiver and was using a splitter. Now that I have a "transpondeur" I could not use the same antenna. It seems some antennas are approved to be used with AIS Transpondeur (again I am not technical). I heard of OpenCPN and at some point I need to look into it (I am just using a couple of Ipad with Navionics charts on), would be nice if someone could tell me step by step this is how it should be done... My problem is that I already spend 9.5 hour a day, 5 (or more) days a week in front of a computer, so that very last thing I want to do is: in my "fun" time, spend even more time in front of a computer... Alexandre -------------------------------------------- On Tue, 11/26/13, Ian Shepherd <sv_freespirit@...> wrote:
Subject: Re: [Amel] AIS To: amelyachtowners@... Date: Tuesday, November 26, 2013, 10:59 AM Alexandre, I don't understand why you had to have a separate VHF antenna? It is common practice to use a splitter and connect your VHF and AIS to the one aerial. I have this set up on Crusader. The advantage of two antennas is that you can always receive AIS signals even when transmitting on your VHF. I use a hand held for most comms, leaving the main VHF off to save power and in this part of the world to reduce the number of irritating transmissions by the Israeli Navy who use far too much power. I can't help thinking you might not have been told the truth, the whole truth and nthing but the truth by your installer. I hope I am wrong. If you use a laptop, try OpenCPN. It handles AIS beautifully. Regards Ian Shepherd SM 414 Crusader Larnaca Cyprus On 26/11/2013 15:59, Alexandre Uster von Baar wrote: Good morning RIchard, I just had installed the ICOM MA 500TR AIS Transpondeur as well as new VHF Radio ICOM M604A and the commandMic 162B. I wanted a Transpondeur for the same reason (broadcast my position, type of vessel, speed, etc. instead of being a simple "dot" on a radar) especially since I am crossing the gulf (of Mexico) next month. BUT, the person that installed the equipment was brutaly honnest and said "Tanker" collide all the time... he has to inspect the equipement see if it works, etc. and give insurance reports. So it seems, regardless of the equipment collisions still happends... I picked the ICOM MA 500 TR because it has a little screen where you can see the target (cost $840) (Radio was $510 and CommandMic $145) What I did not know before the installation: I could not use my existing VHF antenna, so had to have another one installed. So even thought I had removed all the panels for an easy access, the technician spent 10 hours... They only charged 8 hours. Thanksfully, there was still a messenger line running to the Lazarette to bring the coaxial cable to the nav station. So with the Antenna, another $1k. Total $2.5K. The technician explained to me which wire to use to connect to a pig tail of a serial port, so that I can connect to a laptop, etc. (nowodays need a serial port to USB). But I don't know how it could be sent to an Ipad (would be nice). What I like is that it seems to calculate speed and heading or all vessels and determine risk of collision. Therefore in busy areas like the (Galveston) bay (near the ship channel), this is quite annoying... which goes back to point above: collision still happends (could that be because people turn the volume down not to be annoyed). Even at the Marina: there is a TowBoat US in a slip 150 ft ahead of me, so if his or my vessel moves a little from the wind, it sounds the alarm... Not sure it helps... Sincerely, Alexandre SM2K #289 NIKIMAT If you enter my MMSI number which is 378111937 or even ship name NIKIMAT you can find my position, here are some links: http://www.shiptracking.eu/ais/#/gotovessel?mmsi=378111937 http://mmsispace.com/livedisplay.php?mmsiresult=378111937 http://www.vesselfinder.com/vessels?name=378111937 http://shipfinder.co/ -------------------------------------------- On Tue, 11/26/13, richtate@... <richtate@...> wrote: Subject: [Amel] AIS To: amelyachtowners@... Date: Tuesday, November 26, 2013, 8:29 AM Hi, I’m looking for feedback on AIS transponders. We have, and like, the MarineGadget AIS receiver USB dongle (www.radargadgets.com) that overlays nicely targets on a Asus netbook running OpenCPN but my wife wants to have the option for us to broadcast our position to shipping traffic. From what I’ve read the Vesper Marine device(s) can send AIS target data wirelessly and we’d like to have the targets repeated on our iPAD running Garmin’s BlueChart Mobile app. Anyone have experience with this setup? Thanks Richard |
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Re: [Amel] AIS
Interesting, thanks for thi AIS primer . I wonder where the erroneous info came from??? Kent On Nov 26, 2013, at 11:30 AM, "Mark Erdos" <mcerdos@...> wrote:
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Re: [Amel] AIS
Ian Shepherd
Alexandre,
toggle quoted message
Show quoted text
I don't understand why you had to have a separate VHF antenna? It is common practice to use a splitter and connect your VHF and AIS to the one aerial. I have this set up on Crusader. The advantage of two antennas is that you can always receive AIS signals even when transmitting on your VHF. I use a hand held for most comms, leaving the main VHF off to save power and in this part of the world to reduce the number of irritating transmissions by the Israeli Navy who use far too much power. I can't help thinking you might not have been told the truth, the whole truth and nthing but the truth by your installer. I hope I am wrong. If you use a laptop, try OpenCPN. It handles AIS beautifully. Regards Ian Shepherd SM 414 Crusader Larnaca Cyprus On 26/11/2013 15:59, Alexandre Uster
von Baar wrote:
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Re: [Amel] AIS
Ian Shepherd
Hi Richard,
toggle quoted message
Show quoted text
as a single hander I rely a great deal on my AIS Class B transponder to keep me safer at times when I am unable to keep a good lookout. I was prompted to buy a full transponder after being very nearly run down in broad daylight by a UN Ro-Ro ferry - a Turkish company. After the very near miss I had a conversation on VHF with the watch officer who said they simply had not seen me despite my crossing under full sail. When I queried why they had not seen me on their radar they went very quiet, wished me a good trip and then went silent despite repeated requests for them to tell me what their radar had shown. Watching another UN line ship go by later, I observed that their radar scanner was stationary so it would seem that some commercial ships are now switching their radar off to save maintenance costs and relying more and more on AIS. I bought a Commar unit together with a VHF splitter by Commar. Both were simple to install and my AIS has worked beautifully ever since. At night I use the radar in watchman mode to look for the non AIS traffic which often turns out to be fishing vessels not yet compelled to install AIS. I have only twice encountered large vessels not showing on AIS. One of these was a stationary warship that dutifully did move out of my way in good time. I run 4 concurrent nav programs as each has something that the others don't. I use OPenCPN, Maxsea 11, Nobeltec Admiral and Maxsea Time Zero. I only use OpenCPN for AIS handling as it is streets ahead of the others both in display, interpretation and alarm handling. My only concern is that as more countries make AIS B compulsory for small craft, the Class A equipped vessels may filter out Class B signals to reduce clutter and too frequent alarms. That being the case, it will be time to upgrade to Class A myself, though it will incur more battery drain due to the higher tansmit power. I would certainly recommend fitting an AIS Transponder. Even if you are able to keep a 100% watch the system takes away any anxiety as you know well before the CPA where the other vessel will pass by you and at what distance. I have noticed too that commercial ships alter course, if necessary, much earlier than before I fitted AIS. Regards Ian Shepherd SM 414 Crusader (2003) Larnaca Cypus On 26/11/2013 14:29, richtate@...
wrote:
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Re: [Amel] AIS
Bill & Judy Rouse <yahoogroups@...>
Thanks, Mark...completely agree. Also for those thinking that Class B is filtered out by large ships: And, lots more...
THE CLASS B FILTER DOES NOT EXIST. Bill On Tue, Nov 26, 2013 at 4:30 PM, Mark Erdos <mcerdos@...> wrote:
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Re: [Amel] AIS
I believe there may be some incorrect information regarding type and A and B AIS units posted here.
My understanding of AIS is as follows:
• Type A: This equipment includes a 12.5watt VHF transmitter (typical 20-40 mile range, mostly depending on antennae height), a dual channel receiver and either a built in GPS or port to external GPS. It can transmit and receive the full complement of AIS information. Type A is required on IMO/SOLAS commercial vessels. • Type B: Designed to provide less expensive AIS functionality for smaller commercial vessels and pleasure vessels. This equipment also includes a VHF transmitter, a dual channel receiver and is required to have a built in GPS. However, transmission power is restricted to 2W, giving a typical range of about 5 – 10 miles. In addition, only a subset of the possible AIS information (for instance, not destination, ETA, draft, navigational status) is transmitted at a reporting rate less than a Class A (e.g. every 30 sec. when under 14 knots, as opposed to every 10 sec. for Class A). Type B does not meet the SOLAS standards but does meet ISAF OSR Cat 1 & 2 requirements. • Type B Receive-only: Inexpensive, low power systems that only receive information from other vessels and do not transmit any information about the vessel they are installed on. Does not meet ISAF OSR Cat 1 & 2 requirement.
It is not possible to monitor only one or the other. The primary difference is the power, the period of time for transmissions, and the amount of data sent. Both Type A and B transmit on the same VHF frequency.
Best regards,
Mark
SM2K #275 www.creampuff.us
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Re: [Amel] AIS
Bill & Judy Rouse <yahoogroups@...>
Richard, The story about ships only selecting Class A and deselecting Class B is a myth. Do the research...it is a myth. There is no red button to deselect Class B.
Bill BeBe, SM2k, #387 On Tue, Nov 26, 2013 at 2:47 PM, Richard03801 <richard03801@...> wrote:
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Re: [Amel] AIS
Alexandre Uster von Baar <uster@...>
Good morning RIchard,
toggle quoted message
Show quoted text
I just had installed the ICOM MA 500TR AIS Transpondeur as well as new VHF Radio ICOM M604A and the commandMic 162B. I wanted a Transpondeur for the same reason (broadcast my position, type of vessel, speed, etc. instead of being a simple "dot" on a radar) especially since I am crossing the gulf (of Mexico) next month. BUT, the person that installed the equipment was brutaly honnest and said "Tanker" collide all the time... he has to inspect the equipement see if it works, etc. and give insurance reports. So it seems, regardless of the equipment collisions still happends... I picked the ICOM MA 500 TR because it has a little screen where you can see the target (cost $840) (Radio was $510 and CommandMic $145) What I did not know before the installation: I could not use my existing VHF antenna, so had to have another one installed. So even thought I had removed all the panels for an easy access, the technician spent 10 hours... They only charged 8 hours. Thanksfully, there was still a messenger line running to the Lazarette to bring the coaxial cable to the nav station. So with the Antenna, another $1k. Total $2.5K. The technician explained to me which wire to use to connect to a pig tail of a serial port, so that I can connect to a laptop, etc. (nowodays need a serial port to USB). But I don't know how it could be sent to an Ipad (would be nice). What I like is that it seems to calculate speed and heading or all vessels and determine risk of collision. Therefore in busy areas like the (Galveston) bay (near the ship channel), this is quite annoying... which goes back to point above: collision still happends (could that be because people turn the volume down not to be annoyed). Even at the Marina: there is a TowBoat US in a slip 150 ft ahead of me, so if his or my vessel moves a little from the wind, it sounds the alarm... Not sure it helps... Sincerely, Alexandre SM2K #289 NIKIMAT If you enter my MMSI number which is 378111937 or even ship name NIKIMAT you can find my position, here are some links: http://www.shiptracking.eu/ais/#/gotovessel?mmsi=378111937 http://mmsispace.com/livedisplay.php?mmsiresult=378111937 http://www.vesselfinder.com/vessels?name=378111937 http://shipfinder.co/ -------------------------------------------- On Tue, 11/26/13, richtate@... <richtate@...> wrote:
Subject: [Amel] AIS To: amelyachtowners@... Date: Tuesday, November 26, 2013, 8:29 AM Hi, I’m looking for feedback on AIS transponders. We have, and like, the MarineGadget AIS receiver USB dongle (www.radargadgets.com) that overlays nicely targets on a Asus netbook running OpenCPN but my wife wants to have the option for us to broadcast our position to shipping traffic. From what I’ve read the Vesper Marine device(s) can send AIS target data wirelessly and we’d like to have the targets repeated on our iPAD running Garmin’s BlueChart Mobile app. Anyone have experience with this setup? Thanks Richard |
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Re: [Amel] AIS
I too have heard that ships don't always monitor AIS B, but that it is getting better than it was initially. I do not use a transponder, but the AIS receiver is a great addition to my equipment. I might consider a radar amplifier rather than an AIS transponder to make sure I am seen by all ships running their radar. It's not terribly uncommon to see ships that are not transponding their AIS signal, but I would think that almost all would be running radar at night. Kent SM 243 Kristy On Nov 26, 2013, at 9:47 AM, Richard03801 <richard03801@...> wrote:
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Re: [Amel] AIS
jlm@jlmertz.fr
I Have for 5 years a TRANSAS
transponder, it's at low price and the best quality .... :-)
Jean Luc on CottonBay Le 26/11/2013 15:38, Mark Erdos a écrit :
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Re: [Amel] AIS
Richard03801 <richard03801@...>
Hi if you are going outside of cell service please give serious consideration to buying a VHF based system. That way you have a true AIS "B" system that ship can see assuming they are looking at "B". Most ships only look at "A". However an A/B recover /VHF will show ship position and name. Regards Fair winds to ALL Capt Richard Piller Cell: (1) 603-767-5330 SUPPORT AND SERVICE IN THE NORTHEASTERN U.S. Cell 603 767 5330 On Nov 26, 2013, at 9:29, <richtate@...> wrote:
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Re: AIS
richtate@...
Thanks for this Bob. Think our preference is to see the AIS target information on the chartplotter, laptop and/or iPAD.
Richard
---In amelyachtowners@..., <rossidesigngroup@...> wrote: I asked my daughter about MMSI calls to ships. She is a ships bridge officer--2nd officer--with extensive experience in the Strait of Malacca, Gibraltar and other crowded places. She says that they "never" get MMSI calls and that it would be "weird" to get one. (This, in my opinion doesn't mean it would be wrong to use it to "ring em up" in an urgent situation.
She did say that if you use the ships name it definitely gets their attention and they should respond to you. Also give your distance, your bearing from them (the reciprocal what you show for them), description of your boat and your intentions. For those of us who need to replace our non-DSC fixed VHFs anyway, Standard Horizon has a relatively inexpensive ($315 street price) VHF--Matrix AIS GX2100 with a built in AIS receiver and screen. The available remote mic (maybe in your cockpit) also displays the AIS screen, which shows the normal AIS calculated data plus the name of the vessels, kind of handy at 3:00 am--see em, call em. http://www.standardhorizon.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=83&encProdID=F858763BB81027701141A0167DE2A031&DivisionID=3&isArchived=0 Standard Horizon sent me a picture of the remote mic displaying an AIS screen display--again, handy in the cockpit. Class B transceiver also sounds good. They consume very little power (I covered this in a previous posting). Bob Brittany de la Mer |
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