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Finally a video with a nice diagram explaining the logic behind east/west magnetic declination calculation. Thank you VERY much! Such a simple concept but I had been getting really confused until I saw your video.

Need more of this especially a situation whereby all the datums can be related for acquired data for different purposes

I wonder how many people died because of bad math on sextant results... O_o

After much trial and error, I learned this the hard way in a 62’ narrow boat. No real current but plenty of windage. A few weeks ago, aboard ‘Britannia’ in Kiel, I watched in awe as the thousand foot ship was rotated 180 degrees in a 1200 foot wide channel.

How to take bearing on ship

There is one more error, the SAD error. Error is found between "Sextant And Deck". I specialise in these errors.

I love how you put things in very simple language. So much easier to understand than the vast majority of YT videos out there. From this new subscriber, thank you from the Maritimes Canada

I would like to pose this question that was asked of me during a recent interview. You are following a TSS lane on a power driven vessel, and being overtaken by a Sailing vessel in sight of you. Risk of collision exists. Which Rule applies to this situation? Rule 18 Responsibilities Rule 13 Overtaking Rule 12 Sailing Vessels Rule 10 TSS I was only allowed to choose one option. I decided to go with 10, though in reality, you can't say it's either 10 or 13, as both of them would be applied in this situation and they don't even contradict one another as in both rules, the overtaking vessel would have to give way, which in this case is the sailing vessel.

I would like to pose this question that was asked of me during a recent interview. You are following a TSS lane on a power driven vessel, and being overtaken by a Sailing vessel in sight of you. Risk of collision exists. Which Rule applies to this situation? Rule 18 Responsibilities Rule 13 Overtaking Rule 12 Sailing Vessels Rule 10 TSS I was only allowed to choose one option. I decided to go with 10, though in reality, you can't say it's either 10 or 13, as both of them would be applied in this situation and they don't even contradict one another as in both rules, the overtaking vessel would have to give way, which in this case is the sailing vessel.

Please add the question to video description, this helps alot

Great work, Would u be so kind to elaborate on secondary port tide calculations ?

I'm just going to follow the Hull to Zeebrugge ferry.

I proud of saying that I've clicked on this video to understand a topic that I don't, after watching I still don't understand and I'm confused

Excellent, simple presentation. With one exception. Are you using proper terms? Tide is the vertical movement of water. Current is the horizontal movement of water. Given how often those terms are used in error, I completely understand how that crept into your otherwise superb presentation.

Single longer is great. Thank you.

Really appreciate ur videos💯👍

ATLEAST 5 short at 5:02 ....rule 34 d

Nice, but how does determining the angle of a celestial body (sun, star etc) which are in motion as is the earth allow you to determine your latitude/longitude ? I was watching this documentary on the Titanic and the relationship of other ships in the area reporting icebergs and referencing the lat/long of those. How are they able to calculate those fixes ? Also what did they do during periods of overcast skies ? Thanks !!

North of the equator latitude is a positive number from 0 to 90, south of the equator latitude is a negative number from 0 to -90. Longitude is positive east of the Prime Meridian in London, and negative west of London, until 180 degrees from London where -180 and +180 meet. These describe the same position: N 30 W 80 is the same as 30,-80 S 30 E 80 is the same as -30,80 You can enter in the numeric string into the location field of your map app and it will move to that GPS position. The opposite side of the Earth from any position is the same latitude with the opposite polarity and the latitude is 180 degrees different from the original location. The points are known as antipodes of each other. The position 45,90 or N 45 E 90 has an antipode of -45,-90 or S 45 W 90 The longitude of the antipodes will always be 180 degrees different from the original point but with opposite polarity, but from 0 or 180 degrees the polarity of the antipode is irrelevant.

Wait.......deviation is local. So how do you swing a compass and create a compass deviation card at a given location, so that it will be useful to the user at different locations that have different deviation values?

COULD U PLEASE EXPLAIN Loren Turn ?

So if we are PDV and another vessel is RAM or CBD or NUC - it doesnt say we cant alter to port, coz this sub-paragraph only applied when both vessels are same status - power-driven vessel , right???

is this apply if no risk of collision

Good one.

I’m new to this channel. And nautical navigation in general. Great content. I’m rowing across the Atlantic this December for charity and have been training in Portland/Weymouth where the tides when rowing really influence what you can and cannot do.. With this rule, is it safe to assume that the tide will be stronger at those times when 3 blocks are represented?

Good day, so if we are PDV and we have let's say NUC vessel crossing from our port side we can easily alter to port? Because even if rule 17 says that we should not alter to port side - it is applied between two PDVs, but the NUC is a different status from PDV, correct?

Super cystal diamond clear mate!!!!!glad i find this video super quick

Thank you so much have used your entire series to help me with my YM exams

Just want to be sure of my latitude

Great jon

Such a great referance cheers

Thank you so so much these videos are the best

awesome

Thank you ❤

Sir my 8 point is not clear

Sir what is the best spot to take bearing?

Well explained thanks

I needed to quickly refresh the rules for examination. Did a speed run through all your videos. Fantastic concise explanation. Thanks.

One easy way I was taught was: RAG boat: Red above Green for sailing boats GAW trawl: Green above white for trawlers WAW shoot: white above white shooting nets WARp haul: White above Red hauling nets RARe stuck: Red above red nets fast RAW fish: red above white for fishing vls WAR pilot: White above red for pilot vls Yellow purse: purse seiners 2 yellow lights

Plastic sextants are also much lighter than metallic ones. If you ever used a sextant in heavy or rolling seas you know what advantage this is 😊

Excellent work.

W❤

Top mark is St George cross os emergency reck marking buoy

Single longer one

Excellent. Thank you

The best

I only knew about your other channel and needed to review running fixes. I was like, wait a minute I know this voice 😮

what happend if the speed its bigger than your 2 waypoint?