Collision Avoidance Radar Plotting 2

In part 2, Capt. Bob takes us through the steps of determine a target's true course and true speed using a radar plotting sheet.
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[@herondeeyan2061]

Thank you for your easily understood explaination. Ive been watching these RADAR videos since I was in college. When I was a deck cadet back in 2018 I downloaded these videos because we literally have no internet for a month every voyage during that contract. Today I will process my bachelors degree that will most likely have radar plotting assessment and Im refreshing my memory by watching these videos again. Thank you for sharing this lecture for many to learn from.

[@waynevarkevisser7589]

Capt. Bob is an EXCELLENT LECTURER !!, South African Chief Officer.

[@justineseka8032]

Capt. Bob Thanks

[@mannyvasquez3733]

I'm getting ready to do my radar recertification and this is the best set of instructional videos i have ever seen

[@gigglesmcdounut723]

Thank you so much for explaining this!! I was having such a hard time understanding what the lines are and why they're there! You make it so easy to understand what's happening

[@WillN2Go1]

Good instruction. Captain Bob is an excellent teacher. Thanks.

[@saskehusky4689]

Thank you so much sir for uploading this video it helps me a lot to understand radar plotting which caused nosebleed to me when i was in college in just 21 minutes you made me to understand everything than my instructor that had 2 hours to explained but i've learned nothing good job

[@hnavdive5318]

the explanation about the second target is exactly what i've been looking for, so thank you Very much!

[@williamwright5487]

Thank you for this video. I am currently taking this in university. You explain it so I actually understand.

[@grrad76]

This lecturer has a super way for clear explanation .. thx and greetings from Germany

[@user-dk6yx2oz9f]

る

[@jeffman618]

Thank you for posting these videos. I will be recerting on Monday for the 7 th time . These videos help alot for studying this week even for an old fart like me.

[@Prasangaarachchi]

wooww its really amazing ,, thank you sir, great job

[@marixonbasmayor1378]

Thank you sir.. Easy to understand. God bless you more. From Philippines.

[@user-xo4qk9fd5o]

Great video. Thanks a lot

[@n2dabloo]

I find TCPA by walking my r to m distance down the RML and interpolating for time. Your method appears to be much more precise though. Great video and fantastic instructor.

[@evin956]

Perfect!!!! Thank you very much , Captain !

[@janisrcdronepilot1405]

Very clear and understandable! 👍👍👍

[@nunezkevin9634]

We really need this especially in this time of pandemic were online classes are the bases for academic. Philippines..... PIT

[@salvadorracaza8197]

great video Sir.

[@omerburakergan7008]

Great lecturer and great video very useful to all marine students thank you very much sir

[@sabelokp4161]

very helpful and easy to understand

[@mebarekfoued6646]

You're the best ❤️

[@user-ss3wr4nv8k]

Dear is very clear explained👍

[@ishtiaqqureshi501]

Very helpful,its refresher course at home 😉

[@danbar9494]

Thanks great video. My blood pressure id dropping.

[@marks2122]

Thank you sir.

[@B0untyCraft]

Cool video, very usefull!@!!!!

[@ericdeer13]

Great stuff. Thanks a ton!

[@nurlatifahmohdnor8939]

White light consists of 1 2 3 4 5 6 7 colours.

[@pacheconataniel3683]

Thank you for this video sir

[@justineseka8032]

Thanks

[@alcalimot139]

Oh? Opposite of the Ship's Course. omayghaaaad thank you

[@kayang-kayavlogs496]

Thankyou so much sir

[@brucesinclair2981]

I beleive in the KISS principle What a lot of work to avoid a collision. As a single handed sailor I could not spend 12 monutes at the chart table plotting on graph paper. to determine if a collection will occure. For me I use my eyes and check the bearing of the vessel in question. If constant bearing a collision will occure its that simple, So therefore its impreetive to change direction I change direction in the direction of the aft of the vessel (unless its a head on) with a min of 45 degree alteration during the day min of 60 degree at night to ensure they can see a course change has been made. ITs that simple

[@leoncintron7810]

bruce sinclair lets say it’s a hurricane at 200 miles from you, you can’t see it with your eyes but you can plot it on radar you will still want a CPA for it and to know it’s motion and speed for avoidance.

[@steveh9643]

OK if you can use your eyes in fog then good for you!

[@ramneekchowhan7534]

Its for vessels with navigating officers not for fishing boat officers like you .... How dumb thoughts you have 😂😂

[@CristiNeagu]

The actual plotting bit shouldn't take more than 1 minute, including avoidance calculation.

[@omictina4987]

Oh di wow

[@gaudencioevardone7045]

How about if the bearing and distance remains the same after 6 mins. example 14:06 dist. 10.0 nm brg. 046 deg. then at 14:12 dist= 10.0 nm brg. 046 , correct me if I'm wrong is it that the target is going the same course and speed

[@seabound1350]

Thank You Sir!

[@muhammetergen9161]

good job sir

[@heldrinemali7895]

very informative

[@andreasalvo8374]

how did you get 2.0 miles distance? should'nt it be 1.2 miles ? Distance = Speed x Time or im using the wrong formula?

[@christianbatulan4201]

6 multiply by 20 the result divide it by 60 to get the distance

[@JLaserX]

...as video 1, just thanks!!!!!!! Perfect for me.

[@dRo0l]

thank you sir

[@julietmike5038]

Salute sir

[@johnlorenceabdullah7788]

thank you

[@michaelangelomacalintal7128]

Where you get the 21 knots?

[@nurlatifahmohdnor8939]

Rectangular PEGASUS

[@nurlatifahmohdnor8939]

AURIGA (the Charioteer)

[@nurlatifahmohdnor8939]

Page 107 I see 8 dots on the Babylonian tablet. Circle of the sky ÷ 360 units = degrees Function: to predict eclipses

[@nurlatifahmohdnor8939]

What had happened to Brahe's nose? Page 108. Galileo Galilei 1 astronomer 2 physicist 3 mathematician Et cetera.

[@buenaventuramatthewnoels.4944]

My Deck watch 1 brought me here

[@michaelcanja2898]

Nice

[@sirmelvinmercado4440]

can someone please explain to me how did they get 21knots for true speed? thanks

[@tuginstructor]

True speed of the target vessel is the actual length of the true motion vector from e to m. taking a compass/dividers, measure the length of the line from e to m. take this distance to your 12 mile scale, remember this is a 6 minute plot, so the distance was 2.1 nm OR 21 knots.

[@michaelangelomacalintal7128]

Then how he get 2.1nm to 6 minutes?

[@omictina4987]

@@michaelangelomacalintal7128 6min/60=0.1 21kts/0.1=2.1nm dist sir

[@FooBry0621]

How can I get the "TARGET ASPECT DEG"? please can someone help me

[@quartermaster8699]

Subtract the rml from true course

[@FooBry0621]

@@quartermaster8699 okay bro. Ill try to subtract it still kinda confuse

[@SarmientoRay]

@@quartermaster8699 true course - drm? Is that it?

[@pogsstv7254]

Good evss

[@iwayanbayuwicakcana3023]

Thank you for uploading this educational video. I'm I Wayan Bayu from Indonesia. I studied in Jakarta Fisheries University. I wonder if i can continue my study ini Northeast Maritime Institute, it will be a good chance for me to develop my knowledge in nautical and may i give contribution for my country. Please if there are any student exchange programe or any scholarship contact me. Thank you.

[@calipayanarthurojrf.9809]

how to get the true speed of 21 knots?

[@tuginstructor]

Please see my explanation for the above same question by Sir Melvin M.

[@jomarespinar118]

how did he get 2 nm on 20kts speed?

[@christianbatulan4201]

6 multiply by 20 then the result divide it by 60

[@jomarespinar118]

@@christianbatulan4201 6 indicates 6mins 60 indicates?

[@christianbatulan4201]

@@jomarespinar118 you divide it by 60 to get the hours. In 1 hour there is 60 minutes. In addition, knots define as nautical miles per hour.

[@CristiNeagu]

Wow, such convoluted answers... 6 minutes is 1 hour divided by 10. So the distance you travel in 6 minutes is 1/10 the distance you travel in 60 minutes. So how he got 2Nm from 20kts? He divided by 10. Simple as that. Use 6 minutes as a time base and all you need to do is divide the speed by 10 to get distance.

[@SarmientoRay]

@@CristiNeagu very helpful!!!

[@skindesperado6623]

I got lost at 2miles in 6 minutes some one please explain it to me

[@CristiNeagu]

Speed of our boat is 20kt. That's 20Nm per hour. That's 20Nm per 60 minutes. Therefore, in 60/10=6 minutes, we do 20/10=2Nm. That's why he's using 6 minutes as a timebase, because converting speed to distance just means dividing by 10.

[@leobolqvadze5068]

why is he calling a divider "'compass''???

[@mvicera6]

Leo Bolqvadze we call it Compass Divider here in our country 😂

[@steveh9643]

When it has a pen in one end it's called a compass. Dividers such as you use on a paper chart have a spike at each end.

[@ericdeer13]

Drawr.

[@brianlevin3602]

.

[@Paul-sy9ck]

Great video,thanks a lot