Feature Requests

[wholybee]

I don't think that fine level of control exists in any system. And personally, I would never use it. A boat under 30M could be moving at 20kts, and would be just as serious of a hazard in a collision as a tug boat. And at the high speed would need an earlier alarm time. There just isn't in my opinion a safe way to filter the data like you want to.

When I have been in areas with lots of activity it demands more situational awareness. I don't rely on an alarm to notify me of a hazard. I have on occasion turned off the audible alarm during these times because it is always alarming, but still used the visual indicators on the screen. I think that is safer than trying to somehow filter out boats that might or might not be more dangerous because I still have access to all the information.

I doubt many recreational vessels are installing Class A. Class A is much more expensive and complicated to setup and install. However, SOTDMA Class B+ provides the same features as Class A for the low price of Class B.

[sailingharry]

We will have to agree to disagree. I'm clearly an outlier, as no system allows this.
* A 20 kt power boat is just as much of a risk as a freighter, but I would still be comfortable getting an alarm 5 minutes out for him, and be comfortable passing 100 yards away -- neither would make me comfortable with a freighter.
* Unfortunately, in high traffic areas, it means the alarm is turned off. The on-screen is always on, I think -- but seeing the icon on the screen means you already see them! And for higher speed boats, the screen scale makes the boat off-screen until a short time before CPA.
* I suspect you are right about Class A on pleasure boats.


Alarms are really not a substitute for good watch standing, which means that even installing them at all is a pointless feature that arguably encourages poor watch standing. No prudent mariner should ever hear an alarm about any vessel (or really, any alarm about anything) that was not already identified as a hazard.


The good news is we've moved 50 miles south of Annapolis, so the issue is sort of moot.

[HunterWanderer]

Re Watchdog Course.
It would be great to have a XTE option from an activated route in Course Alarm with the option to set distance . (The XTE comes up in the activated route box)
Also an arrival at next waypoint alarm, also with set distance to waypoint.

[Roleiv]

Hello,
We use open cpn both for navigation and anchor watch. To save power when we are at anchor, we use an Open cpn on a raspberry pi. This is installed with flatpak, which means that we cannot add new alarms to the anchor watch. Is it possible to add more suitable alarms in open cpn? Alarms that wake us up Typically alarms are diving alarms from submarines or other noisy sounds.
Regards, Roger

[Antipole]

Originally Posted by HunterWanderer

Re Watchdog Course.
It would be great to have a XTE option from an activated route in Course Alarm with the option to set distance . (The XTE comes up in the activated route box)
Also an arrival at next waypoint alarm, also with set distance to waypoint.

This JavaScript does this for you:

xteOff = 0.01;	// nm
arrival = 0.01;
OCPNonNMEAsentence(gotOne);

function gotOne(message){
	if (message.OK){
		if (message.value.slice(3,6) == "XTE"){
			splut = message.value.split(",");
			if (splut[4] > xteOff) OCPNsoundAlarm();
			}
		else if (message.value.slice(3,6) == "RMB"){
			splut = message.value.split(","); 
			if (splut[9] <= arrival) OCPNsoundAlarm();
			}
		}
	OCPNonNMEAsentence(gotOne);
	}

In the forthcoming v3 of the plugin (in beta) it could be simplified to the easier to understand and more efficient

xteOff = 0.01;	// nm
arrival = 0.01;
OCPNonAllNMEA0183(gotXte, "XTE");
OCPNonAllNMEA0183(gotRmb, "RMB");

function gotXte(message){
	if (message.OK){
		splut = message.value.split(",");
		if (splut[4] > xteOff) OCPNsoundAlarm();
		}
	}

function gotRmb(message){
	if (message.OK){
		splut = message.value.split(",");
		if (splut[9] <= arrival) OCPNsoundAlarm();
		}
	}

The above compile OK but I have not tested them.

[Corsair63]

I guess already ask about this feature, but don't know if I got an answer.

could be controlled the thickness of the own range rings?

because I see in some computer very thick but I do no find any control, variable neither a key in the settings.ini file about it.

as you can see in the attachment the width of the circle are really big, I want to make then narrower.

[barcoMeCasa]

Think it would possible to add a tick box "centre on boat" on the set scale input box?
Would be useful on slower machines like my Pi3 where zooming is a bit sluggish.
Should I put this in flyspray?

Thnx gang

[Hakan]

You've a "center on boat" button (the ship icon) to the right of the chart scale control. Or key "F2".

[barcoMeCasa]

Originally Posted by Hakan

You've a "center on boat" button (the ship icon) to the right of the chart scale control. Or key "F2".

Yep, know those thnx. On a small boat with sleep depravation getting thrown about having the choice of one less step would be nice though. Maybe with a few default clickable options while we're at it

I should dig deeper into the javascript plug in , maybe it could do something.

thanks

[Antipole]

Originally Posted by barcoMeCasa

I should dig deeper into the javascript plug in , maybe it could do something.

Not with JavaScript plugin v2.1. But, for the forthcoming v3, I am right now adding the capability to centre the chart at a position and, optionally, set the scale.

Maybe you should PM me about exactly what you need?

[barcoMeCasa]

Originally Posted by Antipole

Not with JavaScript plugin v2.1. But, for the forthcoming v3, I am right now adding the capability to centre the chart at a position and, optionally, set the scale.

Maybe you should PM me about exactly what you need?

just a quick reply on here in case someone has anything to add..

Thinking a bit about this, what would be useful to me would be a couple of keyboard shortcuts, one sets scale to 1:1000, chart centred on boat and one sets scale to 1:100,000, again chart centred on boat. So basically press a key to see the boat and about either 1Nm or 5Nm radius around. Thnx.

[Antipole]

May be able to help if I have time before setting forth for our 2024 cruise. Please raise as a requested capability in the new JavaScript plugin discussions here.

[barcoMeCasa]

[barcoMeCasa]

Originally Posted by barcoMeCasa

Yep, know those thnx. On a small boat with sleep depravation getting thrown about having the choice of one less step would be nice though.

Just discovered the chart scale plugin, makes life much easier espc with the last button

Every day is a school day

[P_Dub]

The size of the lines on the tides graphic are way too thin 5.9.0-0-1193etc. How to correct this?