Twister_Ken
Well-Known Member
Re: Meldrew speaks
But why would you want to to drive to Sandettie LV?
But why would you want to to drive to Sandettie LV?
Autopilots and automatic waypoint / heading change? Your thoughts?
- Thread starter Piers
- Start date
peterb
Well-Known Member
A point not mentioned yet is the criterion for 'reaching' the waypoint. Raymarine systems give their warning when you come within a preset radius of the waypoint. Other systems use other criteria; an early GPS we had gave a list of half a dozen different criteria from which you could choose.
I certainly wouldn't want a system that turns at the first warning. Maybe one that turns on reaching the bisector of the two legs, or maybe when it reaches the line of the next leg, or maybe .......... Well it needs thinking about, since no autopilot can possibly take you exactly up to the waypoint. With the Raymarine system, set that preset radius too high and you risk turning early; set it too low and you risk missing the turn altogether. On balance I prefer the manual version, where I can say "OK, turn now".
I certainly wouldn't want a system that turns at the first warning. Maybe one that turns on reaching the bisector of the two legs, or maybe when it reaches the line of the next leg, or maybe .......... Well it needs thinking about, since no autopilot can possibly take you exactly up to the waypoint. With the Raymarine system, set that preset radius too high and you risk turning early; set it too low and you risk missing the turn altogether. On balance I prefer the manual version, where I can say "OK, turn now".
G
Guest
Guest
Even cheapo AH / TP\'s have auto-tack ...
the point here is the arriving to WPT and boat turning automatically without you acknowledging arrival as you do now with most AH / TP's driven by plotters.
Now that is where some of the threads have wandered - as in the AutoTack ... the problem is not the auto-helm or Tiller Pilot - it's the Plotter system that is commanding it. So far Plotter systems have beeped to tell you are approaching wpt ... you accept and then plotter commands the turn ...
That is to me the safe way to do it ... it gives you time to look around and make sure it's safe to turn. I do not like the idea of mindless auto-turn without confirmation ... we have enough idiots out there without giving them more tools to be even more idiotic.
IMHO of course ....
the point here is the arriving to WPT and boat turning automatically without you acknowledging arrival as you do now with most AH / TP's driven by plotters.
Now that is where some of the threads have wandered - as in the AutoTack ... the problem is not the auto-helm or Tiller Pilot - it's the Plotter system that is commanding it. So far Plotter systems have beeped to tell you are approaching wpt ... you accept and then plotter commands the turn ...
That is to me the safe way to do it ... it gives you time to look around and make sure it's safe to turn. I do not like the idea of mindless auto-turn without confirmation ... we have enough idiots out there without giving them more tools to be even more idiotic.
IMHO of course ....
Guitarrich
Well-Known Member
Re: Even cheapo AH / TP\'s have auto-tack ...
I generally hate regulation, but there are some things that SHOULD be regulated for the good af all. For example VHF radios are governed by regulations that dictate how much power you can put out and certain DSC functions etc.
This sort of regulation is done FOR us when the equipment is manufactured.
I'd like to know what the MCA and RYA think about this issue. Naturally if everyone were to obey Rule 5, there would never be a problem. However, it's inevitable that "watchkeepers" will have spells of in-attention, either by needs or laziness. A very short-handed crew on long passage will always leave the helm unattended now and then.
I think manufacturers should receive guidance on this topic and be obliged to make only equipment which performs with the least risk when the human element fails.
I generally hate regulation, but there are some things that SHOULD be regulated for the good af all. For example VHF radios are governed by regulations that dictate how much power you can put out and certain DSC functions etc.
This sort of regulation is done FOR us when the equipment is manufactured.
I'd like to know what the MCA and RYA think about this issue. Naturally if everyone were to obey Rule 5, there would never be a problem. However, it's inevitable that "watchkeepers" will have spells of in-attention, either by needs or laziness. A very short-handed crew on long passage will always leave the helm unattended now and then.
I think manufacturers should receive guidance on this topic and be obliged to make only equipment which performs with the least risk when the human element fails.
jimbaerselman
Well-Known Member
Re: Even cheapo AH / TP\'s have auto-tack ...
[ QUOTE ]
Now that is where some of the threads have wandered - as in the AutoTack ... the problem is not the auto-helm or Tiller Pilot - it's the Plotter system that is commanding it.
[/ QUOTE ]
Ah. Missed something. Wasn't the nut on the tiller programming the plotter system which used the waypoints he mistyped? That guy who also selected 'follow route', or 'follow heading', or 'follow track' - er - which was it? And how should I . . where was I . . . .
Wasn't there a lovely GPS autopilot case that ran aground in a nice big commercial vessel which was following heading when it should have been following GPS track some year or five ago in Nova Scotia? Or is my long term memory as bad as . . . now, where was I again . . .
Ah, trying to remember which route or steering mode I'd selected . . now, somewhere there should be a little flag that tells me what's up . . .
S**t! Where did that rock come from?
[ QUOTE ]
Now that is where some of the threads have wandered - as in the AutoTack ... the problem is not the auto-helm or Tiller Pilot - it's the Plotter system that is commanding it.
[/ QUOTE ]
Ah. Missed something. Wasn't the nut on the tiller programming the plotter system which used the waypoints he mistyped? That guy who also selected 'follow route', or 'follow heading', or 'follow track' - er - which was it? And how should I . . where was I . . . .
Wasn't there a lovely GPS autopilot case that ran aground in a nice big commercial vessel which was following heading when it should have been following GPS track some year or five ago in Nova Scotia? Or is my long term memory as bad as . . . now, where was I again . . .
Ah, trying to remember which route or steering mode I'd selected . . now, somewhere there should be a little flag that tells me what's up . . .
S**t! Where did that rock come from?