Thanks to you I pass my USCG OUPV course. Your guidelines to follow this steps are the most simple and easiest way to solve any kind of problem situation. I can't thank you enough for your help, expertise and dedication. God Bless you with health and a lot of good things.
Sir, thank you. I've been working my up from ASA 101 though 104. 104's chartering stuff was not easy. In part because I wan't allowed the use of a calculator and the charting became more of practical math test. These videos are great though. I'll continue to study charting and work on my basic math incase my solar powered calculator goes down. ASA 105/106 starts in a week.
Or you could times the drift .8 by 57, the angle subtended in degrees by a radian, and times that by the sine of the acute angle between course and drift namely the sine of 70 degrees (you can think of the sine of 70 as a percenrage 94% or nearly 100%). That will give a value of roughly 42.8 (this value will not change unless the set ans drift change). You then divide it by boat speed, namely 5 kts giving you course correction angle of 8.5 or 9 kts.
Just starting my ASA 105 Course Study. My question is why are the assumptions for Course to Steer given in True instead of Magnetic headings? Terrifically clear explanations and tutorial BTW, I'm just confused on this point of Magnetic vs. True for assumptions Is it just for the practical exercise, ie. after working out CTS True one needs to work out CTS Magnetic? TIA and great teaching.
The current is given for certain points on the chart, usually in diamond boxes and a table at the bottom of the chart with speeds and directions for different states of the tide. One has to use the local tide tables to find the state of the tide and then interpolate for you position. Then as you go along you add in your own determinations of drift from your DRs and fixes. Its all very approximate but works well in fact. Tides are fairly predictable for standard ports but out at sea they are not so precise.
Sorry for a naive question from an airman: how is it that to correct the wind you just take its direction into account? What about the wind speed? Why don't you proceed like you did for the current, by considering its heading, speed and you're own speed and building the resulting triangle?
Another question from a complete rookie: 2:13 - I can't seem to figure out why you'd measure the 5 knots from the set & drift-line, instead of the fixed position (the starting point). Seems to me like an unnecessary complication. Can't you just measure the 5 knots from the fixed position, make a mark and then use the compass tool, the ruler and the compass rose in combination to draw a set & drift line "north" of the course line, but in such a way that it intersects the 5 mile-mark on the course line? Then, to find your course to steer, all you need to do is draw a line that connects the center of the compass rose to the 0.8 mile-mark on the set and drift line north of the course line.
Drift in sailing seems to be defined different from how you use it, namely the difference between compass course and course through the water, resulting from the wind pushing against the sails
That sideways slipping is "leeway" and varies with the points of sailing. You can estimate it on smooth water by looking at the angle of the wake to the axis of the boat.
In one book I have it says at least every 2 hours, but it all depends on where the boat is relative to hazards, and the strength and range of the tides.
Excellent video! Again, like my comment on part 1--would just like to know how to steer the vessel using a magnetic compass with this info? thanks, Cameron
@@jonathanwilkey4353 Thanks for this. Two further questions might help clarify: 1) I'm on the west coast of Canada, using government map #3263 (for example). The compass rose says "019degE 2005 (9'W)." I take this to mean that there was 19 degrees of eastward declination/variation in 2005. How do I calculate today's variation? 2) I understand that deviation is particular to each vessel (and relatively small). I'm in a small fibreglass racing dinghy (Vanguard 15); how do I calculate deviation (or can I presume it's negligible?)? Many thanks for your help, Cameron
@@cameronpierce9426 (1) I think the "9'W" means it is moving westwards 9 minutes per year. Multiply 9' by the number of years (14) and you get 2 deg 6', so your variation might be 16 deg54'E if the annual change was constant, which is unlikely. Sometimes better to buy a newer chart as all sorts of other things may have changed. (2) The deviation is supposed to be set for the steering compass by a process known as "swinging the compass", usually done by an expert. The deviation can be large if the compass is located badly, near steel fittings or electrical equipment.
I just can't help but notice your chart is 24 years out of date to when you published the video (Compass Rose Variation 14°.00' W dated 1990). Is that why you never mentioned variation and the transfer of the Course to Steer from True to Compass?
Parallel rulers have a habit if getting caught on the lip at the bottom of the chart table, that is in small boats with limited space for a plotting table.
Set and drift?????? complicated lesson full of jargon and unintelligible for beginners. What's the point in a lesson designed to for those who already know??
At last someone explaining it in a manner I can understand, thank you
Moved back to Kansas but used to watch these videos regularly - miss this stuff and yes great videos!
What part of Kansas? I lived in Wichita Kansas for 27 years. Now in brownsville texas close to south padre n working on my captain license
Thanks to you I pass my USCG OUPV course. Your guidelines to follow this steps are the most simple and easiest way to solve any kind of problem situation. I can't thank you enough for your help, expertise and dedication. God Bless you with health and a lot of good things.
Give this guy a raise
too clear explanation.
Excellent , go ahead for more videos.
thanks for you.
Great job explaining you do an excellent job
Thanks for being such a good instructor, you make life very easy
Excellent explanation. Very clear and without rushing the presentation.
Kudos ! ! ! You made it look so easy, Thank you Captain.
Thank you for the comment!
Coming with curiosity from your nearest industry: aviation.
You’re a lifesaver, Sir!
Thank you Captain Medeiros.
Wow. What an excellent intro to navigation!
Sir, thank you. I've been working my up from ASA 101 though 104. 104's chartering stuff was not easy. In part because I wan't allowed the use of a calculator and the charting became more of practical math test. These videos are great though. I'll continue to study charting and work on my basic math incase my solar powered calculator goes down. ASA 105/106 starts in a week.
Six steps Brilliant! I had been struggling with some 13 step process to arrive at the same conclusion. Thank you for this.
kiss
KISS!!
Amazing - you make it sound so easy!!!
thank you, im studying for my navigation test and this helps a lot!
Good luck! I hope you are successful!!
great lesson. COURSE TO STEER.!!!!!
Explained in a really simple way, thanks so much for sharing.
Excellent clear instructions. :)
This is awesome. Well explained
Very helpful. Thanks.
Or you could times the drift .8 by 57, the angle subtended in degrees by a radian, and times that by the sine of the acute angle between course and drift namely the sine of 70 degrees (you can think of the sine of 70 as a percenrage 94% or nearly 100%). That will give a value of roughly 42.8 (this value will not change unless the set ans drift change). You then divide it by boat speed, namely 5 kts giving you course correction angle of 8.5 or 9 kts.
Very good. Thanks for sharing.
good lesson!!!
Just starting my ASA 105 Course Study. My question is why are the assumptions for Course to Steer given in True instead of Magnetic headings? Terrifically clear explanations and tutorial BTW, I'm just confused on this point of Magnetic vs. True for assumptions Is it just for the practical exercise, ie. after working out CTS True one needs to work out CTS Magnetic? TIA and great teaching.
I invite you to check on our website : nmi.edu/
Thank you for explaining it so well
Captain Dave! We miss you!
Sweet again awesome & even more confused :). So let’s go sailing in Alaska :) lol
Where do you get the current s/d and leeway figures for your conditions?
The current is given for certain points on the chart, usually in diamond boxes and a table at the bottom of the chart with speeds and directions for different states of the tide. One has to use the local tide tables to find the state of the tide and then interpolate for you position. Then as you go along you add in your own determinations of drift from your DRs and fixes. Its all very approximate but works well in fact. Tides are fairly predictable for standard ports but out at sea they are not so precise.
Thank you 👍
Sorry for a naive question from an airman: how is it that to correct the wind you just take its direction into account? What about the wind speed? Why don't you proceed like you did for the current, by considering its heading, speed and you're own speed and building the resulting triangle?
Another video said to use inner compass ring as that is magnetic reading?
Another question from a complete rookie:
2:13 - I can't seem to figure out why you'd measure the 5 knots from the set & drift-line, instead of the fixed position (the starting point). Seems to me like an unnecessary complication. Can't you just measure the 5 knots from the fixed position, make a mark and then use the compass tool, the ruler and the compass rose in combination to draw a set & drift line "north" of the course line, but in such a way that it intersects the 5 mile-mark on the course line? Then, to find your course to steer, all you need to do is draw a line that connects the center of the compass rose to the 0.8 mile-mark on the set and drift line north of the course line.
Try it your way and see if you come up with the same answer/locations.
What is the course over ground?
Drift in sailing seems to be defined different from how you use it, namely the difference between compass course and course through the water, resulting from the wind pushing against the sails
That sideways slipping is "leeway" and varies with the points of sailing. You can estimate it on smooth water by looking at the angle of the wake to the axis of the boat.
How long can you safely plot out a CTS? Tide pattern change every 6 hours or so in most environments.
In one book I have it says at least every 2 hours, but it all depends on where the boat is relative to hazards, and the strength and range of the tides.
Excellent video! Again, like my comment on part 1--would just like to know how to steer the vessel using a magnetic compass with this info?
thanks,
Cameron
(GE) TVMDC table (don't worry about the GE that is for gyro)
@@jonathanwilkey4353 Thanks for this. Two further questions might help clarify:
1) I'm on the west coast of Canada, using government map #3263 (for example). The compass rose says "019degE 2005 (9'W)." I take this to mean that there was 19 degrees of eastward declination/variation in 2005. How do I calculate today's variation?
2) I understand that deviation is particular to each vessel (and relatively small). I'm in a small fibreglass racing dinghy (Vanguard 15); how do I calculate deviation (or can I presume it's negligible?)?
Many thanks for your help,
Cameron
@@cameronpierce9426 (1) I think the "9'W" means it is moving westwards 9 minutes per year. Multiply 9' by the number of years (14) and you get 2 deg 6', so your variation might be 16 deg54'E if the annual change was constant, which is unlikely. Sometimes better to buy a newer chart as all sorts of other things may have changed. (2) The deviation is supposed to be set for the steering compass by a process known as "swinging the compass", usually done by an expert. The deviation can be large if the compass is located badly, near steel fittings or electrical equipment.
Thank you Captain
so,in the USa are nautical miles same as USA land miles? as in 1 knt is 1 nautical mile per hour.
Capn. 5kts is 5.75 mph.why do you at 5.18 say 5.2 mph is 5.2 kts. Can u pls. Clarify. Ty.
Can somebody give the name of this chart and where can I get it ?
I just can't help but notice your chart is 24 years out of date to when you published the video (Compass Rose Variation 14°.00' W dated 1990). Is that why you never mentioned variation and the transfer of the Course to Steer from True to Compass?
very useful, thank you
sooo freaking cool !!
It helps me thank you sir
This is how word by word is being taken out systematically.
+ cam-pur or tam-bah
× da-rab or ka-li
÷ ba-ha-gi
= sa-ma de-ngan
% pe-ra-tus
Operation Sail
2, May 1620 Mayflower
Tenerife, Canary Island.
2 weeks voyage
Bermuda
Eagle
295-foot = 90-m
Page 55
dude ur awesome!
I was not understand in polish ( my mother language ) , I was managed in English , he he .Thanks
Lost me right at the start with "set"? What is 'set'?
Set, the direction of the current/tide affecting the boats planned course. Drift, the speed of this current.
69 comments nice- also cool video I have no idea what this is but i like it
thank you
Cool 😎
also better to use the Portland (aka Breton) Plotter. Those roller plotters have one MAJOR drawback - they can slip, esp in heavy weather
everyone: thanks for helping me pass my X test now i can do Y
me, who just likes sailing: He He Compass Rose Go Burr
You need parallel rulers mate.
Parallel rulers have a habit if getting caught on the lip at the bottom of the chart table, that is in small boats with limited space for a plotting table.
c'mon man! use proper nautical dividers. you'll make a mess of charts using these needle sharp points
Teaching tools for classroom use ...
Classroom use
Set and drift?????? complicated lesson full of jargon and unintelligible for beginners. What's the point in a lesson designed to for those who already know??
This is a part two, part one perfectly explained how to determine both set and drift, he also explained what those terms mean in very simple terms.
Thank you Sir.