Thank you so much for giving us a glimpse of life at sea and the navigational routine of a mariner. It was a delight seeing how you get the raw data from the instruments onboard your ship.
Thank you Sir! This video is very helpful! So easy to understand, actually this is more detailed and well explained than the teaching strategy of my prof 🙄 Godbless Sir! ⚓
Thank You Sir for this video tutorial, Well Done, The video is much appreciated & easy to understand, it really helps us aspiring officers. Now we can watch it anytime on our CP, laptop & tabs.
Nice and detailed explanation po. Salute!! Sana meron din sa star, moon at planets kahit tig one example lg sir.. Guide lg para sa Training record book like me as cadet. Godbless po⚓
Thank you sir. Very informative and madaling intindihin. Request po sana ako video about deviation and variation. Tsaka paano tamang pag setup and gamitin ang radar. Maraming salamat sir, Godbless po 🙏 (new subscriber here 👋😊)
Thank you teaching for full knowledge of navigation , Capt: I wish better then explain more much other importance like a calculation of secondary port that I really expecting , Capt:
sir good day po ako ay laging nanunuod sa mga videos mo and subscriber nyo rin.. pwd po tips para sa mga my license kagaya ko na hindi pa nkakaakto..lalo na mga puti yong officers sa barko kahit anong gawing pag pupursigi hindi parin na aappreciate ang lahat ng effort mo...salamat po..more power！
Actually the compass error can be calculated by spherical casine law, aka haversine. If you have the spherical casine law built in your calculator, things can be speed up to get the Az and thereafter the gyro error and so on. ABC tables base on 4 parts formula which is derived from casine law. They are basically the same. It is simply because the celestial sphere is just another perfect sphere like the Earth. (from the perspective of math)
@@davidjohnrote869 I dont have videoes. But here is the steps 1. Record the GMT and GPS position 2. Get the GHA & app. Dec of the celestial body (e.g the sun) by using natural alamanac. 3. Substitute the following figures into haversine formula: Lat A = Ship GPS latitude Long A = Ship GPS longitude Lat B = celestial body apparent declination Long B = - GHA of the celestial body * (minus GHA because GHA counts from west) 4. By the haversine formula, you can get the T.Brg & Zenith Distance of the celestial body * (Assuming the GPS position is accurate) 5. Compare the T.Brg & Gyro Brg to get the gyro error. And so on... ----------------------------------------------------------------- The reasons are: 1. Celestial sphere is assumed to be perfect sphere. Therefore haversine is working. 2. ABC tables are from 4-part formula. And 4-part formula is from haversine (or aka cosine rule)
Sir mas naintindihan ko na ng lubos Ang pag solve sa compass error...maraming salamat po sa vid nato sir...galing...pero may tanong Lang po ako paano po naging EAST sign Yung deviation sir? Maraming salamat po...God bless
HELLO SIR GOOD MORNING I'M KENTH BRIAN POBADORA CURRENTLY STUDYING AT PMMS MANILA , I'VE LEARNED A LOT FROM YOUR VLOG SIR! WHICH ENHANCE MY KNOWLEDGE ABOUT NAVIGATION , MAY I REQUEST YOU SIR TO MAKE A VLOG THAT DISCUSS ABOUT NAVIGATIONAL PROBLEMS THAT DEALS ABOUT USING TRIGONOMETRIC FUNCTION OR ALSO KNOWN AS SOH CAH TOA METHOD. THANK YOU SO MUCH SIR! BE SAFE AS ALWAYS
Sir paano po yung calculation ng sunset and sunrise given yung Coordinates and DR position going to point A to B? Baka pwede ka po magbigay ng example. And Meridian Passage na rin po
For the correction of declation it is only applied when you going to calculate LOP sun. For the compass error it doesn't matter. Beside for the correction of the declination its only 0.1 or 0.0 so its small to carried out.
Sir tanong kulang po bkit po sa GE at GC minus po ung weast pru sa TC at Variation add napo ung weast tsaka minus nadin po ung east..salamat po sa sagot sir gob bless
Hirap po pala sir lalo na sakatulad kong mahina sa math buti May calculator gawa ka pa po ng maraming tutorial para po saamin..grade 10 palang po ako pero gusto ko na pong matutunan ang ginagawa niyo jan kasi pangarap ko po talagang maging katulad MO sir May maipapayo kaba saakin sir at ano po dapat kong pag aralan habang nasa high school palang po ako sana po masagot MO😁
Dont worry mahina din ako sa math. I hate math pero in the long run kasama pala sa trabaho ko. Pag paulit ulit mong ginagawa madali nlng yan. Try to concentrate in trigonometric subject.
Sir, I've 2 doubts. Forgive me if I'm wrong, It's been 2 years since I sailed. When you wrote heading as 124 and you showed us in compass and reader as 105. Why? And finally when you found out Z= S 2.7W why did you add it with 180. Kindly explain
About the heading. I said from the video the heading is only example where you can get. Its not exactly the heading :) kindly watch again that part :) about the 180. 180 came from quadrant. 0 / 90 / 180 / 270 :)
@@theseamanvlogger Thank you for clearing up the heading. About the Z, if quadrant is SE then 180 - value. If quadrant is SW then 180 +value. If quadrant is NW 360 - value and If quadrant is NE then just that value to get the true azimuth bearing. Kindly correct me if I'm wrong. Thank you
Hello Sir, Great video very usefull.. I have a question .i have on board same calculator but i can't adjust it ..i mean then i add lat &long error appear ..can you tell me in what mode i have to adjust to receive correct figures .. Thanks in advance
Yes i know. But as you can see on time 10min 49 sec the next to 28 is 30. Masyadong malayo at wala ka nang makukuha if iinterpolate mo payan. Kaya pag ganyan ang situation sa nearest ka ku2ha ng value.
sir may nakita ako sa 3/o nmIn sa barko na may ruling xa when variation is applied to get the deviation (RULE: always change the sign of the variation applied to magnetic error to get the DEVIATION) nalilito tuloy ako,.ganito compass correction nya (TB-GB=GE then GE & GC=TC and then TC & MC=ME and then ME & VAR=DEV(RULE: always change the name of the variation)..bkit sau di mo pinalitan ang variation sign mo sir???? naguguluhan tuloy ako,,
I translate the beginning of my sentence for your comprehension coz I think you're not a filipino. It goes this way try to find out the name of your azimuth is it NE SE SW NW then apply the rules as I mentioned above.
Mandatory daily or every watch need mag compute ng compass error. Ang sinasabi nilang paperless is about ecdis. Pero even na paperless need parin ng backup chart.
Hi po sir. Share ko lang method na tinuro sa amin. Although same lang naman po ang sagot. TB: 182.7 GB: 183.0 (always subtract) GE: 0.3W (compass best [GB>TB] error west) GC: 124.0 TC: 123.7 (pag west ang GE, subtract and vice versa) MC: 122.0 TE: 1.7E (compass least, error east) VAR: 0.2 E (always change the sign so ''west'' sya dito) DEV: 1.5E Sa inyo po kasi, nauna ang Varation agad. Anyways, tried and tested ko naman po ang method na ito. Hindi ko po alam kung ano ba ung textbook procedures talaga, pero otherwise pareho lang namn po ang kakalabasan di ba ? hehe Sa uncorrecting naman po, may tinuro yung dati kong CM na mnemonic: T: Tita V: Vina M: Morales D: Dating C: Chicks Hehe sana po makatulong. Good day and Safe Watch!!
Actually i would like to do that planet and moom buts its just the same calculation. The only difference is the gha of the planet you can get that on the left side of the nautical almanac together with star. Then the moon on the right side of the nautical almanac. Just the same as sun gha. All are same computation expect the star with additional SHA.
Watch carefully the video i explain that only example not actual bearing. I just show where to find it. Because i cant do the actual bearing of the sun because you must be fast in taking and writing. No time to make a video for it.
Thank you so much for giving us a glimpse of life at sea and the navigational routine of a mariner. It was a delight seeing how you get the raw data from the instruments onboard your ship.
Thank you sir 😇 Im watching this for the preparation of my first ship joining tomorrow as a DCDT in BSM company. Great video for review and refresher.
Ayos yan det, tyaga kalang bsm din ako hehe
Pano makapasok ng bsm sir
Thank you Sir! This video is very helpful! So easy to understand, actually this is more detailed and well explained than the teaching strategy of my prof 🙄 Godbless Sir! ⚓
I was prof in AIMS before :)
wow sir.... product din po ako ng AIMS
Year 2007 ako nag turo dun. Celestial nav 2 subject ko sa citi motors bldg.
Thank You Sir for this video tutorial, Well Done, The video is much appreciated & easy to understand, it really helps us aspiring officers. Now we can watch it anytime on our CP, laptop & tabs.
Your welcome.
Thankkkkyou malaking tulong to may demonstrate paa. Thanksssss po
Iam studying nautical sir graduating. Thank you for this vlog/video. I learned a lot . 😇😇
Sir thank you so much for sharing your knowledge. God bless
Thank you sir.
Meron na po pala kayo ng tutorial nahnap ko lang po ngayon.
Sir next time po sa lop naman po.
Thank you sir for this vlog it would help me a lot sir
Nice and detailed explanation po. Salute!! Sana meron din sa star, moon at planets kahit tig one example lg sir.. Guide lg para sa Training record book like me as cadet. Godbless po⚓
Meron akong star paki hanap nalang sa list of vlogs ko.
Ayon nakita ko na sir. Maraming salamat po..
Thank you sir. Very informative and madaling intindihin. Request po sana ako video about deviation and variation. Tsaka paano tamang pag setup and gamitin ang radar. Maraming salamat sir, Godbless po 🙏 (new subscriber here 👋😊)
Will do that variation and deviation. Yung radar it depends sa desire ng setting ng duty officer
Will do that variation and deviation. Yung radar it depends sa desire ng setting ng duty officer
The Seaman vlogger kahit ung sa radar controls lang po sir if may time na kayo 😊 ingat po
Will do
The Seaman vlogger thank you so much sir. Will be a Big big help 😊 🙏
Very Informative....Thanks.
Salamat po sir maapply ko to pag balik ko sa barko ulit . 😊😊😊
salamat sa kaalaman na binahagi mo sir,
salamat idol madami po ako natutunan sa inyo
Thank you teaching for full knowledge of navigation , Capt: I wish better then explain more much other importance like a calculation of secondary port that I really expecting , Capt:
sir good day po ako ay laging nanunuod sa mga videos mo and subscriber nyo rin.. pwd po tips para sa mga my license kagaya ko na hindi pa nkakaakto..lalo na mga puti yong officers sa barko kahit anong gawing pag pupursigi hindi parin na aappreciate ang lahat ng effort mo...salamat po..more power！
Thank you so much for your lesson 🌷
Very clear explanation
Can you make another video expalin how to use calculator for got azimuth
thank you sa pag share sa knowlage mo sir
Actually the compass error can be calculated by spherical casine law, aka haversine. If you have the spherical casine law built in your calculator, things can be speed up to get the Az and thereafter the gyro error and so on.
ABC tables base on 4 parts formula which is derived from casine law. They are basically the same. It is simply because the celestial sphere is just another perfect sphere like the Earth. (from the perspective of math)
Do you have the video about it ?
@@davidjohnrote869 I dont have videoes.
But here is the steps
1. Record the GMT and GPS position
2. Get the GHA & app. Dec of the celestial body (e.g the sun) by using natural alamanac.
3. Substitute the following figures into haversine formula:
Lat A = Ship GPS latitude
Long A = Ship GPS longitude
Lat B = celestial body apparent declination
Long B = - GHA of the celestial body * (minus GHA because GHA counts from west)
4. By the haversine formula, you can get the T.Brg & Zenith Distance of the celestial body * (Assuming the GPS position is accurate)
5. Compare the T.Brg & Gyro Brg to get the gyro error. And so on...
-----------------------------------------------------------------
The reasons are:
1. Celestial sphere is assumed to be perfect sphere. Therefore haversine is working.
2. ABC tables are from 4-part formula. And 4-part formula is from haversine (or aka cosine rule)
Nakakatulong video mo sir. Thnks
Awesome fabulous
Slamat SA mga videos muh sir..malaking tulong po...just sub..keep safe
Hello sir thanks for your lesson
Sir mas naintindihan ko na ng lubos Ang pag solve sa compass error...maraming salamat po sa vid nato sir...galing...pero may tanong Lang po ako paano po naging EAST sign Yung deviation sir? Maraming salamat po...God bless
Thank u sir. U just made my day
Your welcome :)
Good video Officer . what about the tiime ? because we need it to know the Declination
Already in the vlog.
Nice tutorial po sir! Sana next video Compass error by Star and How to use Sextant naman po :)
On progress npo ung dalawa nayan
Very good bro
HELLO SIR GOOD MORNING I'M KENTH BRIAN POBADORA CURRENTLY STUDYING AT PMMS MANILA , I'VE LEARNED A LOT FROM YOUR VLOG SIR! WHICH ENHANCE MY KNOWLEDGE ABOUT NAVIGATION , MAY I REQUEST YOU SIR TO MAKE A VLOG THAT DISCUSS ABOUT NAVIGATIONAL PROBLEMS THAT DEALS ABOUT USING TRIGONOMETRIC FUNCTION OR ALSO KNOWN AS SOH CAH TOA METHOD. THANK YOU SO MUCH SIR! BE SAFE AS ALWAYS
maraming salamat po sir , godbless
sir pwede ba paturo din about sa tides sir? yung pagkuha ng height of tide sa standard and secondary ports?
Sir paano po yung calculation ng sunset and sunrise given yung Coordinates and DR position going to point A to B? Baka pwede ka po magbigay ng example. And Meridian Passage na rin po
Thankyou po sir
great video chief :) godbless
Sir what about the variation? How did you get it?
Why is it no correction on the declination?
Its too small to correct thats why i did not apply it.
Thank you for this sir ❤
Chief kukuha paba nang magnetic sun bearing?
Pambihira Salamat sir!
MccoyTravels walang anuman😊
The Seaman vlogger pasampa rin ako sir eh first vessel as deck cadet sa MOL-magsaysay salamat sa mga tutorials sir!
I noticed your a left handed sir. Same here..
Hahaha thank you :)
Can you show us how to do main steering gear test from bridge . Thanks in advance
sir, how come you didn't get the d correction for solving the correct or exact value for the Declination?
For the correction of declation it is only applied when you going to calculate LOP sun. For the compass error it doesn't matter. Beside for the correction of the declination its only 0.1 or 0.0 so its small to carried out.
@@theseamanvlogger ok.. sir thanks for the explaination..
Ok no prblm. Any question regarding this is welcome. So that anybody can share :)
Don't we need Time UTC for our GHA Calculate?
Watch the vlog
Sir tanong kulang po bkit po sa GE at GC minus po ung weast pru sa TC at Variation add napo ung weast tsaka minus nadin po ung east..salamat po sa sagot sir gob bless
thanks a lot for helpful
New subsriber niyo sir😊
Hirap po pala sir lalo na sakatulad kong mahina sa math buti May calculator gawa ka pa po ng maraming tutorial para po saamin..grade 10 palang po ako pero gusto ko na pong matutunan ang ginagawa niyo jan kasi pangarap ko po talagang maging katulad MO sir May maipapayo kaba saakin sir at ano po dapat kong pag aralan habang nasa high school palang po ako sana po masagot MO😁
Dont worry mahina din ako sa math. I hate math pero in the long run kasama pala sa trabaho ko. Pag paulit ulit mong ginagawa madali nlng yan. Try to concentrate in trigonometric subject.
@@theseamanvlogger salamat po malaking tulong po to saakin .god bless you po😊
Please what is the name of this value after C value ?
so useful
Thanks
So eto po pala pinagaaralan ng boyfriend ko ngayon sa bridge hehe 😁
next po sir is by amplitude naman kung pwede, salamat po
sir, thank you so much and i have question here: Why the Z value plus 180= TB, pls explain for me. thank you again and good health sir
have you found the answer yet ?
SW 180 + Value of Z
@@jaylecious1541 tks
Where did u get +180 from 2.7+180?
Quadrant
Sir, I've 2 doubts. Forgive me if I'm wrong, It's been 2 years since I sailed. When you wrote heading as 124 and you showed us in compass and reader as 105. Why?
And finally when you found out Z= S 2.7W why did you add it with 180. Kindly explain
About the heading. I said from the video the heading is only example where you can get. Its not exactly the heading :) kindly watch again that part :) about the 180. 180 came from quadrant. 0 / 90 / 180 / 270 :)
@@theseamanvlogger Thank you for clearing up the heading. About the Z, if quadrant is SE then 180 - value. If quadrant is SW then 180 +value. If quadrant is NW 360 - value and If quadrant is NE then just that value to get the true azimuth bearing. Kindly correct me if I'm wrong. Thank you
@@arjunkm10 yes youre correct
Sir tanong lang, ilan ang maximum altitude of a body in getting gyro error?
sir, why is the deviation, east?
The term ME after variation in your calculation for deviation refers to what sir?
Magnetic Error
thank you sir.⚓
Welcome
salamat sir!
Welcome po
thank you sir.
Dwight Guy Prieto your welcome. I hope my video help.
Sir san nyu nakuha yung 11mins and 45 sec sa? Inc? Hehehe thank you sa pag sagot 😄
Naughty Dude sa mismong oras ng utc kasi dapat ang kunin mo hour minute at second
Eto rin hinahanap ko salamat sir hehe.
Hello Sir, Great video very usefull..
I have a question .i have on board same calculator but i can't adjust it ..i mean then i add lat &long error appear ..can you tell me in what mode i have to adjust to receive correct figures ..
Thanks in advance
sir pashare nmn how to compute gyro using sight reduction tables and amplitude by sextant.thanks
Good day sir
May question lang ako bakit sa sun sir di na kinuha yung SHA para makuha yung true LHA kasi sa star kinukuha sir diba? thanks in advance.
sir, just wondering if why did you add 180 after getting 2.7 to get the true bearing?
Sir pa reply po dito huhu
Up
Up
Good day sir, i clarify ko lang po sa 10:52 regarding table c, it supposed to be 28.75 po ang hanapin d po ba? Salamat po sa reply
Yes i know. But as you can see on time 10min 49 sec the next to 28 is 30. Masyadong malayo at wala ka nang makukuha if iinterpolate mo payan. Kaya pag ganyan ang situation sa nearest ka ku2ha ng value.
@@theseamanvlogger salamat po sir.
@@theseamanvlogger yung 28.75 naging 40 sir di ung sa 30 ung sinasabi
Sir,can i ask if how long did you take solving the compass error?
Less than a minute
Good day sir.. meron lang po ako tanong sa Dev 1.5 E.. paano po nakuha ang value sa Dev na E?
Thank you po..
sir may nakita ako sa 3/o nmIn sa barko na may ruling xa when variation is applied to get the deviation (RULE: always change the sign of the variation applied to magnetic error to get the DEVIATION) nalilito tuloy ako,.ganito compass correction nya (TB-GB=GE then GE & GC=TC and then TC & MC=ME and then ME & VAR=DEV(RULE: always change the name of the variation)..bkit sau di mo pinalitan ang variation sign mo sir???? naguguluhan tuloy ako,,
Iba ang method ng calculation ko. Maraming klase ang pag compute hindi lang isa.
Sir in 2.7+180 ,how this 180 comes?
Tingnan mo yung azimuth mo kung saang quadrant 1st quadrant NE as is 2nd quadrant SE -180 3rd quadrant SW +180 4th quadrant NW -360
I translate the beginning of my sentence for your comprehension coz I think you're not a filipino. It goes this way try to find out the name of your azimuth is it NE SE SW NW then apply the rules as I mentioned above.
Thank you sir.
Sir dba ung variation change sign lagi?
thankyou so much!
Welcome po
Sir on daily basis. Na aapply pa ba yan sa barko.? Neccesary pa ba yan or pwede hindi gawin? Kasi diba paperless na karamihan. Tnx
Mandatory daily or every watch need mag compute ng compass error. Ang sinasabi nilang paperless is about ecdis. Pero even na paperless need parin ng backup chart.
Pag may inspection hinahanap ng inspector yan
thank you sir
5:46 why take 28 and 40. In table c is take 28 it's ok but 40 why please reply me any one . I am not understand
Sir. san mo kinuha yung +180 sa result ng table C. nasa rule po ba yan always +180 or depende.
na sa instruction yon sa noris table
Why is the rule for adding 180 to Z? For TB to become 182.7
Salamat po sa sagot
AZ is N or S same as C's name; If LHA is between 0-180 = W and 180-360 = E
N/E TB = AZ
N/W TB = 360-AZ
S/W TB = 180-AZ
S/W TB = 180+AZ
sir bakit ang laki ng magnetic error(ME) 123.5 deg.?
Dapat 123.2 lang
That the gmt time you using sir.
Sir why is it your sun's bearing written on your paper is 183 while the sun's bearing that you got is 140, how come it becomes 183?
Got it sir.
Saan po galing yung 11mins 45secs sa incremenst sir?
Already explain that in vlog. Pls. Watch carefully.
Nasa Nautical Almanac yan pre hanapin mo sa page 330 something yon. yung 11 mins 45 secs yun ang basis mo at hanapin mo yung sa nabanggit kong page.
Sir asan ung part wherein i log mu xa sa compass error book.?
Hlo sir please tell how to find gyro error and moon error
ME stands for?
You are forgot make incements and correction for sun declination and also correction for A and B in Nories tables thats woud be more accurate
0.1 for corrections. It’s too small to correct. The important to your compass error is to have same calculation to deviation card onboard
You didnt show us your gmt.its a little bit confusing how you get your declination and gha of the sun
Watch the video carefully so that you will not BE confused.
Please Expalin why Deviaton sign is East
Hi po sir. Share ko lang method na tinuro sa amin. Although same lang naman po ang sagot.
TB: 182.7
GB: 183.0 (always subtract)
GE: 0.3W (compass best [GB>TB] error west)
GC: 124.0
TC: 123.7 (pag west ang GE, subtract and vice versa)
MC: 122.0
TE: 1.7E (compass least, error east)
VAR: 0.2 E (always change the sign so ''west'' sya dito)
DEV: 1.5E
Sa inyo po kasi, nauna ang Varation agad. Anyways, tried and tested ko naman po ang method na ito. Hindi ko po alam kung ano ba ung textbook procedures talaga, pero otherwise pareho lang namn po ang kakalabasan di ba ? hehe
Sa uncorrecting naman po, may tinuro yung dati kong CM na mnemonic:
T: Tita
V: Vina
M: Morales
D: Dating
C: Chicks
Hehe sana po makatulong. Good day and Safe Watch!!
Thanks for the contribution :)
tanong ko lang sir san kinuha ung 180 na inadd sa 2.7 1st year bsmt student lang po ako hahaha
Sir. Bakit po East ang deviation?
Kuya tanong lang, san mo nakuha 11min and 45 seconds sa increments? I mean san ka nag base. Tnx
sa utc yan
This help me so much in my computation. Thank you very much sir :). Insta subscribe.
P.S.
Can I know how do u get gyro error using planets or moon :)
Actually i would like to do that planet and moom buts its just the same calculation. The only difference is the gha of the planet you can get that on the left side of the nautical almanac together with star. Then the moon on the right side of the nautical almanac. Just the same as sun gha. All are same computation expect the star with additional SHA.
Sir bat di ka ng apply ng d correcrtion sa declination
UTC?
always
Can you explain for me why bearing of the sun on the gyro repeater is 140 dreg and you write 183?
Watch carefully the video i explain that only example not actual bearing. I just show where to find it. Because i cant do the actual bearing of the sun because you must be fast in taking and writing. No time to make a video for it.
Where is utc? Someone can answer plis.
In gps
@@theseamanvlogger oke thanks
@@theseamanvlogger sir, why gyro error have 0.3 ?
Difference of gyro bearing and true bearing
Paano po nakuha yunh 2.7 Z?
bro paano kumuha ng error object is aries and the name of aries is still unknown
Sir bakit nag add 180 from 2.7 ?
Sir sa Quadrant.
Kala ko ako lang bumabalik sa vlog nato ni sir.
NE (0+Az) SE(180-Az) SW(180+Az) NW(360-Az)