Question of the Day?
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Question of the Day?
Question of the Day?
The only thing that I did differently this time, was to have only just answered the 13th Feb question and then I reloaded the page again 10 minutes later for the new question-- but I got no confetti. That I couldn't understand. Then when I scrolled down the page and saw my red mark!!!!!!!!!🤣🤣🤣🤣☹️😭.
Such a easy one to get correct, and if I had got this wrong I think that I would go out and sink my keel-less boats 😁😁.
Strange because the Keel answer has 100% correct answers at this time ??? 12.29 am.
Question of the Day?
I paid £13p.a. but it was worth it, although it is almost 'start again' afterwards.
Roy
Question of the Day?
- I could tell you but then I would probably get banned off the site...🙄🙄🙄😁😁😁😁😁😁!!! ( A rather rude joke ).
No- really the second part to the question was irrelevant, just an AI glitch I believe 🤔🤔.
Question of the Day?
Translating from English into German can sometimes be challenging. That's just how it is when you learn English as your fourth language.
As a landlubber, I have to read twice to understand what is meant!
As I said, you never stop learning, even as a grandfather!
🤣🤣🤣 😉😉😉
Your Michel-C.
Question of the Day?
Question of the Day?
Well, the second question is completely irrelevant. Even if you know it, you can't answer because the options are related to the first.
Question of the Day?
I notice Phil could see the split question. The question asks the following Q1: " which of the following sails is set immediately above the main course on the mainmast" Q2 "what is its historical significance in sail handling during long ocean passages?" 😂
Question of the Day?
Question of the Day?
Question of the Day?
I have had to come on the site using my PC as I cannot get on with my phone as I had the opportunity to delete a load of browser history and I have yet to figure out how to get back onto the forum with my handy phone ??? 😠
What,s happened with Doug (RN in Munich ) he hasn,t been on QOTD for ages 🤔🤔 has he lost interest or is he not well.
Question of the Day?
Question of the Day?
The propeller grips the shallowest part like a car wheel (which turns and moves it forward) because the deeper you go, the denser the water becomes.
In fact, the different densities of the water at different depths are the crux of the matter.
It may seem strange, but that small difference (between the layer hit at the top and the layer hit at the bottom by the blades) acts as a grip. The effect is sufficient to be appreciated.
I hope I've been clear.
Question of the Day?
(based on personal boating experience).
Score one for lucky (logical) guesses!
Dave B
Question of the Day?
Question of the Day?
Roy
Question of the Day?
The propeller (in its lateral movement) doesn't behave like a paddle wheel, but rather like a car wheel.
Paddle wheels (like those on boats on the Mississippi, for example) aren't completely immersed in water, so they're like oars; they push the water backward and move the car forward.
The propeller can't do this because it's completely immersed in water.
To put it simply, the concept is more comparable to a car wheel. If that's what you meant, then sorry, I misunderstood. But the question remains: why should a propeller behave like a car wheel?
The spinning wheel grips the ground and therefore moves the car.
Where does the propeller grip?
Question of the Day?
Question of the Day?
Question of the Day?
I always enjoy working out a drive train with my smaller models and have been working with 4/5ths Sub-C 2800 maHrs cells. Slightly smaller battery than usual type and of course less weight. I also use Aliexpress tiny esc's and there are lots of small motors available. All the above to accomodate getting old and accounting for what you can carry.
Keep on carrying on for the 80 old members still doing what we started 60 years ago!
Roy
Question of the Day?
But does anyone know why the propeller has this effect?
That is, what physical phenomenon makes the propeller behave like a wheel?
I'm not talking about the normal forward or backward thrust that everyone knows, but about the lateral effect.
Can you try to answer as you always do (i.e., without consulting the internet first)?
Question of the Day?
Since it was repeated in all the answers, I tried to isolate it, as if it weren't there.
Eventually, I realized the question boiled down to a basic notion of seamanship.
Basically, everyone knows that, seen from behind (astern), a right-handed propeller has an evolving effect, pushing the stern to the right and the bow to the left, when sailing forward with the rudder at center (in reverse, the opposite occurs).
A left-handed propeller pushes the stern to the left and the bow to the right when sailing forward. While in reverse, the opposite occurs.
The evolving effect is noticeable when stationary; once in a fast motion, it's no longer noticeable.
It's more noticeable when sailing backward than when sailing forward. In other words, if someone wanted to determine whether their boat's propeller is left-handed or right-handed, they should test it when stationary and in reverse.
Question of the Day?
Dave B
Question of the Day?
Philuk👍
Question of the Day?
Question of the Day?
As always, I had to look up the meanings of words in English; once I was sure that the "Bowline" knot was what we call the "gassa d'amante" knot in Italian, I had no doubts.
No one with even a little nautical experience can ignore it. It's an exceptional knot, useful and easy to untie when needed.
It's even taught in basic courses.
I've also used it in naval modeling; I've discovered that using real knots on sailing ships makes them much more realistic, even though some knots are very difficult to tie with ropes less than half a millimeter thick.
A curiosity:
In sailing, we call the "gassa d'amante" knot. But in rock climbing and mountaineering, the "Bowline" knot is called the "bulino" knot.
I noticed that when pronouncing the two words, there's a certain similarity, an assonance.
Well, my suspicion proved to be well-founded.
I discovered that the term "bulino" is derived from the English word "bowline." I did some specific etymological research.
In short, in seafaring, the old term has remained, while in mountaineering we've adopted an Anglicism.
It makes me laugh that mountaineers and sailors don't even know their respective synonyms.
Yet, it might be interesting to know that in mountaineering, to secure the lanyard to the harness, a bowline knot isn't used, but rather one considered much safer. The Savoy knot (or figure-eight) is always used, looped twice.
Complements to the question of the day: I think this is a relevant and very interesting question.
Question of the Day?
Question of the Day?
Figure of 8 knot is a stopper! it stops a loose line from running through a pulley. A sheet bend from memory links 2 ropes of different diameter.
Roy
Question of the Day?
Question of the Day?
Scotland
Question of the Day?
Dave
Question of the Day?
Dave
Question of the Day?
Question of the Day?
Question of the Day?
"The correct answer is 'A dotted line enclosing the abbreviation 'Fg' or a jagged line with the word 'Foul''. On British Admiralty charts, foul ground is depicted by a dotted or jagged line boundary."
So take your choice 🤔🤔😊.
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