How to plot navigational warnings on ECDIS (the right way) ?

Nicely done, very helpfull article expecially for JRC users. Although I would like to share my oppinion regarding this manual correction vs the user map option. First of all editing over the cell itself is not very applicable for noobs. Isn't it easier to create several user maps for the different navareas and to safely apply corrections there. Having in mind that JRC have no limit for overlapping of user maps and for the amuount of user maps that you can create. Let us say that you have 2 inmarsat C on board we can monitor the next navarea lets say 1 day before and we can be ready in advance for the future navigational conditions. Another consideration that I have is what will happen if we maka a manual correction and we dont erase it and after some time we get the weekly update? If tye correction is already included in the update as a permanent one, what will happen with the manual one that we made already? I am not so advanced so if somebody can answer me I would appreciate it. Using user map we can avoid that. We can just erase the whole usermap with everthing in it assuming that we dont need it. We have to be sure that we have choosen the correct usermap before making the correction itself and to be careful not to merge some usermaps by mistake.

Sir..This was a very helpful blog..and ive been searching for a similar guidance for quite some time..we used usermaps previously for the purpose of nav area warnings...like the way Mr.Sava mentioned...making usermaps for various navareas nd so on...It was easy in many ways..U didnot have to physically navigate to the particular position or to chart for entering the correction...instead create the symbol on your wrking screen type in the location and the object will go to the designated area...also it was possible to share usermaps between ecdis ..so if you do update on one you could transfer it to other and both ecdis would look precisely the same....even with texts and informations coming at same positions..But these days sire inspectors are advising that the navwarnings and t nd ps should generate alarm the same way as ecdis does with normal enc....which again cant be done with usermaps..One suggestion was creating all warnings with dangermark and danger area but i guess that is not the way to go about it...Well lets take no shortcuts and of this is the rightway...lets do it the rightway....I still have a few doubts regarding manual update....One is..if it is a long pipeline being layed...like the one from singapore to all the way up in china....which chart should we select for doing the update...at times the coordinates of joining points itself lies on different charts...when i went throigh a guidance by iho..it says updates which lie outside cell range should not be accepted ...Sir could you please advice on this...it would be a great help..I also got to know that some explanations are given in IEC 61174....However I couldnt find a copy of it as it is not available for free download...Kindly advice..

For those who are upgrading to PL4.0 I want to warn regarding using "Manual Correction". From PL4.0 Manual Correction works only on chosen chart, it means if you plot on Large scale chart it will not be seen on bigger scale chart and other way around - as ther in more chose of min/max scale. Also After upgrade of Present system there is big Chance that you will get stuck (PL 4.0 DONT LET YOU HIDE (DELETE) CORRECTION DONE ON OLD SYSTEM) with Manual Corrections which was done on 3.4. as the PL4.0 uses other way of saving Manual corrections. Of course there is way how to remove thous Manual Correction from old system (its in UCHA folder with other extension, so if you go ECDIS DATA folder and UCHA Folder you can delete it manually). Any how Before upgrading I advise to remove All Manual Correction. Also from PL4.0 it looks like NAVAREA is more comfortable to put thru User Map.

That was such a precious information. Thank you captain Jassal. Your knowledge is really valuable and helpful for plenty officers.

Hi everyone, Thanks to Capt Jassal for wonderful sharing and as always very helpful to all. Reference to all above, User charts / maps are definitely the best option and mostly being used by navigators. The procedures involved in deleting/ removing the nav warnings especially when using a manual update are different for various ECDIS and hence everyone is comfortable with user charts only. Also just to share same topic was part of diiscussion during a recent Shell vetting and a CDI and inspectors / Auditors too felt User maps were the best option with the removal procedures being much easier. Manual updates definitely give more coverage with buoys, shapes etc but User charts is much more easier method with multiple layers for different nav areas being Incorporated in the system. There is still no correct procedure or a defined rule for the use of User charts or manual updates. We all finally look at safe and a easy method of incorporating the nav warnings without any complications which are the User charts. Thanks and regards. Thanks and regards

Tanks

What is the meaning of warning "select route not wgs84" it was showing while a route is monitored on the screen and the chart datam selected was alrdy wgs 84