AIS: A Creepy Experience.

[BigBoater917]

Would you even consider transmitting AIS in your land-based life?

'Just a thought.

Would you put an orange flag on a bicycle if you were going to be in heavy traffic?

In all honesty many class B units aren't picked up until you're only a few miles away. Often I'll only get an AIS target indicator but no course, speed, name or destination from small targets.

[Kenomac]

Originally Posted by Jammer Six

Seeing other boats isn't nearly as important as them seeing you.

Sorry my friend... but you got that bass-ackwards.

[DotDun]

Originally Posted by BigBoater917

Would you put an orange flag on a bicycle if you were going to be in heavy traffic?

In all honesty many class B units aren't picked up until you're only a few miles away. Often I'll only get an AIS target indicator but no course, speed, name or destination from small targets.

Just guessing, you have an old class A unit? Please update, as it doesn't understand class B transmissions.

1) class B doesn't transmit destination
2) If you are receiving a class B message, it either contains dynamic or static data, and either message would give you more data than you are seeing.

CLASS B AIS REPORTS

[Boracay]

From what I can work out neither vessel here was equipped with nor were they using AIS.

I can understand why one would not want to advertise one's position when anchored but underway, particularly in a high traffic area and at night or in poor weather, AIS should be used.

If there are concerns regarding security for small boats then it could be turned off as necessary at the discretion of the captain.

I don't have AIS but then I don't travel at night, in bad weather or in high traffic areas. If I ever get anywhere near Singapore an AIS transponder will be on my shopping list.

[Cheechako]

I dont have experience with it, but it seems to me something that you dont know if the other boat is using or not ......leaves you in t he same position as not having it.... making sure you stay out of the way on your own volition....

[Jim Cate]

Originally Posted by Jammer Six

Seeing other boats isn't nearly as important as them seeing you.

Hmmm...

Before AIS I often SAW other boats/ships and took action to avoid a collision with them. In many cases I'm sure that they didn't see me due to poor viz conditions and my small size. They did nothing. Despite their not seeing me, there was no collision or even close call because I did something.

I believe the same is true with the advantage of AIS.

Best of all is when both parties are aware of the other one.

Cheers,

Jim

[MarkJ]

Originally Posted by Jim Cate

Best of all is when both parties are aware of the other one.

Cheers,

Jim

Even better... both parties, but especially the ships, have the AIS digitally recorded so that if theres any problem the court is gunna know about it.

This information is recorded in both boats (if you have a SD card in) but also every other ship in the coverage area. Witnesses!


Mark

[estarzinger]

Originally Posted by MarkJ

Even better... both parties, but especially the ships, have the AIS digitally recorded so that if theres any problem the court is gunna know about it.

This information is recorded in both boats (if you have a SD card in) but also every other ship in the coverage area. Witnesses!


Mark

I am not aware that there is any 'record' capability on my AIS (Vesper), and I don't think it has an SD slot. Have I overlooked something?

[Morgan3820]

Originally Posted by Tingum

You sound paranoid

Paranoia is just another word for good sense when everyone is out to get you.

Can you say NSA?

[MarkJ]

Originally Posted by estarzinger

I don't think it has an SD slot. Have I overlooked something?

If you havent overlooked the SD slot then maybe you dont have one.

Ummmm does your Vesper run on ProAIS2 on your PC?

Because that has a Log to File of the Serial Data (last tab).

OpenCpn shows the NMEA window but I cant seem to save that or copy the info.

[misfits]

Originally Posted by Kenomac

AIS: A Creepy experience.
Would you even consider transmitting AIS in your land-based life?

I don't think your concerns are unfounded. I grew up in the late 60's & 70's so the whole big brother thing kind of freaks me out. Land based systems, OnStar comes to mind. This is all being marketed to us in the name of safety.

When I take to the water, I'm doing so to get away. I don't want anyone, friend or foe to know where I'm at.

[wxman]

Many of you have already said this, but one needs to really figure out the risk assessment for each of the mentioned risks.
It seems to me that getting run over by a large ship should be the worst case. With an AIS transceiver that is far less likely to happen, as they will see. Also, when you have the ship’s name, they will respond on the radio if you call them.
IMHO If you are more concerned with people knowing where you are, then getting run over, that’s a whole different discussion.

Richard

[bcn]

Originally Posted by MarkJ

OpenCpn shows the NMEA window but I cant seem to save that or copy the info.

OpenCPN provides the VDR (Voyage Data Recording) plug-in for this purpose.

Comes also very handy if you want to test some aspects of the software with previously recorded data.

bcn

[s/v Jedi]

When you only receive half the boats and ships around you, I find it more probable that your receiver only gets one of the two channels somehow (or it is an old/cheap one that could only do one channel or gets overloaded with more than 5 targets) rather than that the other half of boats and ships don't transmit AIS.

[DotDun]

Originally Posted by wxman

Many of you have already said this, but one needs to really figure out the risk assessment for each of the mentioned risks.
It seems to me that getting run over by a large ship should be the worst case. With an AIS transceiver that is far less likely to happen, as they will see. Also, when you have the ship’s name, they will respond on the radio if you call them.
IMHO If you are more concerned with people knowing where you are, then getting run over, that’s a whole different discussion.

Richard

This thread is all about AIS enabling 'people knowing where you are'. I don't understand why it's 'a whole different discussion'.

Nobody is doubting the value of AIS in the act of navigation. Although, it's not as if vessels without AIS are getting 'run over' at high frequency. The major benefit of AIS is alleviating the 'pucker factor' for the helmsman. Collisions will still happen even though the vessels involved have AIS, as the root cause of most accidents has nothing to do with what technology is on the vessel.