So far, so good. These are basic notions that anyone who knows a little about boats knows.
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)?

This question got me thinking a lot about the term "hell bias," which I didn't understand.
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.

I worked that one out in my mind and it was also the longest answer!
Roy

So ..... If a ship's Captain "Doesn't Know Squat", he could be in trouble? 🤣

Dave B

When have a very sjort memory like me every question is new its great 🤣🤣
Philuk👍

Deja vu, everyone should get this right 🤔

Hi Nick, I completely agree with you.

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.

The most ubiquitous knot in the sailor's arsenal...

A clove hitch is usually used for hanging fenders from stanchion rails, very quick and also undoes easily.
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

Hi Tomark, I have moored up a 40 foot yacht with a wet rope tied a bowline and 24hrs later easily undone it, so a bowline does work nicely. Just remember the rabbit coming out of his hole going round the tree and going back down!
Roy

I was initially considering a bowline knot, but my choice was questioned by the claim that it could be easily untied...which I don't think.

One for the Boy Scout in me
😊

It doesn't matter if its the longest or easiest I'm getting into habit to decide upon the answer to said question whenever I wake up now. My daily ritual 😂. Worst part is it's right in the middle of my brain fog period though it's a good healthy way to wake up 🤗

The Feb 1st question was not only the longest, but also the most obvious!
Dave

The 1/31 question was a toss-up between A and B. The longest answer for the win! 😁
Dave

Gosh I'm back in double figures! Not been that low for ages! Will have to pull my socks up!😂😂

Come on down to "longest answer wins"
Once again its the longest answer that is correct dont you just love it
Philuk👍

Pat there are still 3% who got it wrong so it will have to come up again🤣

Yes Pat, this is the 3rd time we have had this one, but the goalposts have moved somewhat 🙈. Last time on the 5th November the answer was given exactly word for word as-
"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 🤔🤔😊.

Again a revision question

I remembered from the back of my little grey cells somewhere
Philuk👍

Well i am still in there fighting to stay alive every time i get the idea i am doing ok i get knocked down again but i shall keep having a go but never been much of a real sail wheres the model boat questions ?
Philuk👍

Taffrail..
Yes S Sailor, it was first introduced by Sir Francis Drake, on his fleet of galleons to stop his Welsh crew from
...............
Falling overboard. 😆😆😝🙃😞😊.
...no insults intended 😗😘

Well I now know what a "Taffrail" is 😁

Come on down to longest answer wins at least it gives me a fighting chance of knowing it 🤣🤣
Phil uk👍

Did somebody out there make this question JUST for me?😁

The last three questions are very similar to one's we have already had 21st-23rd Jan🙄. Nearly "Revision" ones.
I remember the Transportable Moisture Limit bulk cargo one (22nd), Nickel ore, as I think I may have got it wrong the last time😠.

Hard question today, got it wrong and hopefully will do better tomorrow. Seems like most of the questions would be correct but picked the wrong one🤔😕

todays question was a stinker. I kept looking thinking I should click on what seemed obvious, but then kept thinking, this a trap 😀 so I chose as a wild guess Nickel Ore. Bingo. I have since done some research and realised the Ai is getting sneaky and trying to lead us into a fall sense of security by mentioning 2016 IMSBC in one of the answers. It is a category C item in the 2016. I think it has been upgraded to A in the latest version 2024/25

I agree they are both cat a under that reg so question is wrong with two correct answers you have a fifty fity chance of getting it it right
Philuk👍

Thanks Ed, put bauxite, without looking up any answers, as it seemed the most likely to liquify - hard to believe nickel ore can liquefy.

In todays question both Nickel Ore and Bauxite (as per 2016 IMSBC Code) are definitely classed as Group A cargo. Both require a certificate of Transportable Moisture Limit.
Therefore both are correct, t this question must be cancelled and a new one published.

Some people might find this interesting when it comes the soft iron balls on the compass.
https://www.brucemuseum.ca/collection/special-steering-compass-a-1920s-era-steamship-binnacle/

I thought the answer should have magnets in it! Seems like Wikipedia agrees as well!
Roy

I used the LAW...
Longest answer wins

In Todays question none of the answers are correct, you cannot get it right.

Well----The compass question, if I'm not mistaken, was a load of old Kevin's balls 😉 so I'm off down to the Flinder's bar for a pint of rum. 😉😋

Not really, I don't drink--only tea or coffee 😊..

Don't knock it Pat it is a bit of fun. I can't say I found your questions any better, they seemed for those who were ex sea-farers. I make model boats and yachts not been to sea except on a cruise and the crew rarely take you into their confidence about their credencials.

I see that you are currently at 97% so well done, the next step is 100% and after that the only way is down! If the answers from A.I. are wrong they are cancelled, a recent survey of A.I. as far as information went, was one result was just 54% correct so I am not holding my breath!
Roy

Again it's one we have had before Nick, getting a bit repetitive and boring now :-)

Process of elimination. Not SOLAS, that's to do with construction safe practice,we had blast water water management a couple of days ago. SCTC is to do with training standards, I think, so it can only be MARPOL...

Blew it at the last question!!!
Roy

Well i nearly went for the longest and bit sneaky of ai putting a short answer in just to confuse us.
Glad your back home and on the mend nhs is wonderful 🤣🤣
Philuk👍

Goog news for Steve’s broken leg, doctors will fix it with Superglue like they did to me. Does a better job than stitches or clips. 😂

What about Steve's virtual broken leg, he was committed in an involved sort of way, and now needs friends or maybe supervision?
Hope all good with you now Ed.
Roy

Ed,
That's great news, congrats!

Good news, I’m home again

Well it is a lovely sunny morning here in lowestoft uk is talking about a snow bomb coming, lets hope they have got that wrong roll on the summer, i for one cant wait i hate the winter, well i hope you guys have a grest weekend
Philuk👍

And welcome back to longest answer wins going to get caught out unless i read the questions
Philuk👍

Well that question was a bit of a no brainer...

Hi Roy,
If I told the Doctor that I had "accidentally" broken my leg so that I could go see Ed, in hospital, I would certainly be "committed" ---- and would probably be taken away in a straight jacket 😁😞🙃😟.