If you cannot see the light, then how would you know that it is raised. For light to be visible both conditions need to be satisfied. If data is insufficient, then we go by the range that can be calculated - else lesser of two. If still in doubt, please revert. Best Wishes
Anirudh, technically it is the lesser of the two - if sufficient data is available to calculate both. If you can calculate only one - for want of data, please use the one you calculate. This is under the assumption that the other one is more than the one calculates - so again using lesser of the two. Hope clear. Best Wishes
Good day sir If question says to first sight a light and nothing is mentioned about meteorological visibility , how to calculate PLR or we will use GR in such a case? Thanks and regards
Only for Exam - If information is not sufficient to calculate both GR & PLR, then calculate the one possible & use it - under assumption that what you have calculated is lesser of the two, Hope clear. Best Wishes
There is no explanation, but in such a you do visual interpolation between the curves. Else, you may find PLR for both visibilities and do linear interpolation. Thanks
Thank you very much sir Great help
Most welcome. Best wishes
Superb Explanation.Top Notch Video
Glad you liked it! Best Wishes
how to know PLR and GR are satisfied
Sir in books it is written to go for only gr when raising dipping is referred.
If you cannot see the light, then how would you know that it is raised.
For light to be visible both conditions need to be satisfied.
If data is insufficient, then we go by the range that can be calculated - else lesser of two. If still in doubt, please revert. Best Wishes
@@MarineGurukul thanks sir
But in the morning luminous range does not matter right. We can see the lighthouse from GR range.
Great help
Thanks you liked
Good morning
For preparation of second mate / DNS/ BSC nautical science/NCV come in #kundanpatna
thank you sir
Most welcome
Good morning
For preparation of second mate / DNS/ BSC nautical science/NCV come in #kundanpatna
Thank you very much sir
Most welcome. Best Wishes
Respected sir, can u please clearfy whether we have to Use PLR or GR in night hours for raising a light right ahead ?
Anirudh, technically it is the lesser of the two - if sufficient data is available to calculate both.
If you can calculate only one - for want of data, please use the one you calculate. This is under the assumption that the other one is more than the one calculates - so again using lesser of the two.
Hope clear. Best Wishes
@@MarineGurukul Thanks alot sir.
Sir pls confirm that is this what to take PLR OR GR depends on time in the question
Take lesser of two.
Sir PLR was 6.7 before but it shows 14 NM in last.
Sorry did not understand your question. Is there any oversight in video??
Good day sir
If question says to first sight a light and nothing is mentioned about meteorological visibility , how to calculate PLR or we will use GR in such a case?
Thanks and regards
Only for Exam - If information is not sufficient to calculate both GR & PLR, then calculate the one possible & use it - under assumption that what you have calculated is lesser of the two,
Hope clear.
Best Wishes
Highly appreciated ,Thank you sir
Thank u sir
So nice of you
Why then sir you mentioned in last plr is 14nm
I think that was a clerical error. It should have been 6.7 NM.
Thanks & Best Wishes
Sir if visibility given =10-15 miles.. Then which line we have to use for calculating luminous range
There is no explanation, but in such a you do visual interpolation between the curves. Else, you may find PLR for both visibilities and do linear interpolation. Thanks
Thank you sir
Welcome & Best Wishes