Celestial Navigation Time zone Lingo for U.S. Coast Guard Exams
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- เผยแพร่เมื่อ 19 มิ.ย. 2024
- Specifically for U.S. Coast Guard exams there is often confusion over the lingo used for time zones and zone descriptors. This video describes standard meridians, zone descriptors commonly used in USCG exams, and the reasoning behind solving these problems. For more reading, refer to Bowdtich's chapter on "Time" which you can download for free from the NauticalAlamanac website thenauticalalmanac.com/Bowdit... or other places.
For free or discount courses on marine navigation please visit www.practicalnavigator.org.
Happy navigating!
excellent usage of the dual markers stacked in a composite unit used for pointing! +1 sir
Happy to see that you're still making videos after all these years, just wanna say thanks for all your lectures about navigation.
Sailor from Ph.
Glad you like them!
When we crossed the Atlantic, Canaries to St Lucia, we didn't bother changing the ship's clock to every time zone we crossed. I think we only changed once, near the half point mark, and we pretty much had to, as the Sun was "lagging behind the clock" and sunrise was happening much "later" (in clock terms) and interfering with the shifts and mealtimes. So, the two shifts split the difference and we did an hour and a half extra each!
As long as you know to what Zone Descriptor the ship's clock is set to, you're good to go.
Or the senior person on watch can arrange it so they stand one hour less watch haha. Thanks for watching!
Most excellent. Thank you.
So then, east coast US during daylight saving time would still be called ZD +4 not ZD +5, and you just need to know to add the extra hour. Got it. Thank You.
Is a tide problem says ZD +5 , we just need to add an hour to the given times in the tide table. Is that right?
That is true, I find the best way for tide problems is to change the time at which the problem is asked. For example 1600 EDT is the same as 1700 EST, then solve it for EST. Then you don't have to worry about forgetting later in the math problem. But many approaches work, thanks!
@@NavigationTraining Thanks! I’ve just been checking longitudes against the given zone descriptions just to be safe. Sometimes I wish they’d just do away with DST all together. Lol!
I googled this video for exactly this question.. I always thought DST is +1 from EST.. Dont know why its not clicking to me. I get the whole concept and then come across a problem that reminds me I don’t get the concept loll.. DO AWAY WITH DST!!!!!
15°= 1037mph we don't see at the equator. 24,901 miles in circumference divide 24hrs in a day equals 1037mph we don't see at the equator...tornadoes rip houses apart at 300mph....🤔
Please give your best answer..for if the sky turns with the earth flight time would be drastically different and wind direction would spin only one way....at 1037mph.
Atmosphere:
Atmo=vapor/gas
Gas properties don't create solid shapes of spheres. Gas only takes the shape of its container. Gas is an innate shape..
Sphere- ball shape
Atmosphere =oxymoron
A plane with x and y coordinates is a flat surface...no?
Can you please explain if an airplane flys in the air over a plane? Sounds funny, right? Like water level.