I have been thinking about the longest number of words being the answer. It seems AI thinks the same (7 letters) but the clearly right answer is D with only 6 letters. But then is AI trying to set a trap with a double bluff?

Roy

Well I went for answer D as I asumed it would be the most obvious in this day and age in modern submarines also, while maintaining minimal acoustic signature and avoiding the need for frequent snorkelling.
And I got it wrong!!??.

I have since Googled the question, which I wouldn't normally do. and Google says that this is the correct answer. And why. Google A.I. also says answer D is correct. So why did we get it wrong?????????
Our answers should be corrected.

This is Google's Answer,

The correct option is D. Nuclear propulsion using pressurised water reactors.
Explanation
Nuclear propulsion provides virtually unlimited submerged endurance, limited only by crew provisions, because the reactor does not require access to atmospheric oxygen for power generation.
Submarines with nuclear propulsion can operate for months without surfacing or snorkeling, which is a critical aspect of maintaining stealth by avoiding visual or radar detection at the surface.
While air-independent propulsion (AIP) systems (Option C) also enhance submerged endurance for non-nuclear submarines, they typically only extend it to a few weeks, not the practically unlimited duration of nuclear power.

I read somewhere that Nuclear subs used the spare heat from the reactor to power auxiliary generators, which were Stirling engines. No exhaust no pollution and safe.
Roy

How do you produce enough heat for a Stirling engine underwater? Really didn't understand why that's the answer

Oh dear! Where does AI get the answers from? One of the Scandanavian countries experimented with Stirling engines in submarines and then gave up as they did not have enough power.

For local water very quiet subs the diesel one has proved to be an excellent alternative to Nuclear propulsion.

I think the question needs setting up again.
Roy

The answer is wrong as it did not non nucular subs, only non nucucar subs use
air propolsion🤔
Philuk👍

Hi, Boatshed, I also do the same and seal as many of the bow compartments as I can, but just in case there's a leak 😩, I fill them as much as possible with lightweight polystyrene.😊. Should make the boats bomb proof/unsinkable 😀,from someone who hasn't read the SOLAS manual 😕😃😣.

On todays question,
I had gone for answer C, as I would do this even on my wooden model boaats,
As I think this makes sense just to be safe.

Well I got that wrong. I read it as, what was the alternative to D2 standard. I knew from last time that D2 was the new standard so the alternative must have been the older water exchange D1. 🙄

Deja something or other🤔

Another repeat I think.

The ballast water management question is a repeat revision one, so easy to get correct 🤗.

The Beaufort question, I had to take a "slightly educated " guess 🤔 and got the confetti again.☺☺.

Rear Admiral Sir Francis has breezed in😁and graced us with his presence before!

😎

Coincidentally, right now, and especially for tomorrow, I've been monitoring the wind situation (force in knots and direction) in the area between Ostia and Fiumicino on the Roman coast.
For us, the service is provided by the Italian Air Force, which, among other things, issues the official Meteomar bulletin every six hours and covers the entire Mediterranean.
The Beaufort scale is the same worldwide, but definitions vary. I had to consult the internet to see that the English use the term "brezza" [breeze] (with different adjectives: light, gentle, moderate, fresh, strong) from levels 1 to 6, while in Italian, the term "brezza" [breeze] is used for levels 2 and 3.
For the last degree, the twelfth, the term corresponds to "hurricane," "ouragan," or "uragano" in English, French, and Italian.

Beaufort Scale is applicable on land as well as at sea...

I didn't know the correct answer, as my result proves!

Thats interesting why should everyone know the answer even not interested in sailing ?
Philuk👍

Everyone should get that one right even if no knowledge of seafaring

I have posted pictures of this type of tug, nearly all South African harbour tugs use this type of propulsion.

Again a repeat

The answer was within the question....😎

Did not have a clue, picked what looked right and was the longest and most detailed.😁

Everyone knows that the Portuguese Ferdinand Magellan named the new ocean the Pacific because it seemed calm and tranquil compared to the Atlantic.
He didn't have time to change his mind. Not everyone knows that Magellan never completed the voyage around the world (which was absolutely not the mission's initial goal).
Part of his multinational crew completed it only aboard one ship, the Victoria. Besides Commander Juan Elcano (the Spaniard who eventually took command), very few men returned, including the Italian Antonio Pigafetta (a native of Vicenza in the Veneto region), who had the great merit of recounting everything in writing.
We know it all thanks to him.
Despite being taught in school, despite being shown documentaries or, lately, TV series (very well done), I am still captivated by this fascinating and incredible story.
Recently, I enjoyed one of the best historical reconstructions of the entire expedition I've ever seen or heard, on YouTube.
The authors and the presenter of the channel, in addition to the notions and the story, which I already knew, were so good at making me identify with the anxieties, indecision, and suffering of the crew who had to face storms, calms, hunger, thirst, battles with various natives, but above all scurvy (a vitamin C deficiency disease completely unknown at the time).

Magellan himself named it “Mar Pacífico” (the Peaceful Sea).
😎

Could you be more specific in what you want?
Roy

Can it be more pacific 😀

AI has lent us a helping hand today.
It has come down to a very simple, elementary-level question.

Really 1520 talk about antcient history
Philuk👍

Once again answer with longest answer is the right one 😂
Philuk👍

Hi Steve, I agree with you; studying new topics is always a good thing (perhaps stimulated by something like an exam or a simple quiz without consequences).
However, today, it was enough to reason and use the logic and common sense of a good father.
Many rules follow a natural rationale that's easy to understand, accept, and agree with.
Other rules are highly technical or conventional and simply need to be memorized.
Today, the other three answers would have been rules that weren't in line with SOLAS's objectives.
Well done, Steve.

That was a good guess, but then reading the answers that made the most sense.

Hi, Phil, I remember this one from quite a while ago, but I always read the answers many times and gradually eliminate the ones that seems to be unlikely 😊.
So today we are back to the SOLAS regulations again which I found quite easy after downloading and studying the manual months ago😀.

The answer was the only one to mention surf like they alway say answrr is in the question thats why i read it twice and not jump in
Philuk👍

Lew, reading with a wide range of interests goes a long way. Life experiences help as well. Anyone who has surfed should know the answer today

I am amazed at the nautical knowledge of the people that answer these questions. Their internet skills are outstanding.
Lew

I remembered this one as I thought the answer should have been "The Beach Boys" 😁. It also looks like I missed yesterdays question. How I do not know..🤔

If you got this wrong keep trying as you will keep getting it

Good lord! I have reached the lofty height of numero uno for the first time ever with a lucky guess! It will be all down hill from now on...

Surf Beat question is a "revision" one asked a long time ago 😊.

Edw, mine was a lucky guess I think.

Could not be sure so went for the longer answer 😁

Most of us, with the aid of a launching device, could be classified as travel lifts for our models.🤣

Hi Ed, I agree with you.
I had to learn it. In school, I was often asked why the Mediterranean, despite being very warm year-round, has no coral reefs?
Actually, if you think about it, north of the Red Sea there's one of the most beautiful coral reefs in the world (hopefully it survives), while there's nothing off the Nile, yet it's not that far away. On the coast of North Africa, there aren't many rivers (or large mouths like the Nile), that's true, but the mouths of European rivers are too close to those coasts, in a relatively small (especially compared to the large number of freshwater streams) and closed basin like the Mediterranean.

Hi pat, I think I knew this answer as I find corals fascinating. Apart from the way they are shown on TV, I have been lucky enough to see them first hand.

I went to a hotel at Sharm al Sheik boasting corals, there were none there, there had been many members of a certain unpopular country. Totally undisciplined just breaking off corals as trophies. I watched it happen the poor leader of the group went spare.

Later some years later I had the good fortune to swim over the Great Barrier Reef in 3 different areas. I do not scuba dive but like snorkelling.

The reefs have so many fish around them. A year or so later I was in Thailand and then Phuket and on a dive boat for a week on the Andaman Sea. Swimming among fish for a week it was great.
The water was warm, extremely so. The fish swim at several levels e.g. I had one lot around my head another set at my waist and bigger ones below. Hundreds of them.

The dive boat was an extended fishing boat. There were just cabins for 14 and they had a crew of 12. The Captain answered my questions, he had seen the boat on the stocks, it was a speculative build.
He found a couple of investors and they agreed to have the boat extended, basically sawn in half and lengthened. So the hold was the passenger area. Never saw a fish!
We got on with our bags from a dinghy and then into the cabins a pair of bunk beds and small shower/toilet for each cabin. It was personal service from waking up for breakfast throughout the day.
I did say to the Captain that the dead eyes were not the right way up though!

The area where the fish are and diving occurs is a National Park and we were boarded by the patrols and individually charged much dearer for diving I got away lightly as I was snorkelling. See attached photo.
Roy

I must admit it was a guess on my part

The thing is that the unexpected theory of the longest answer is correct, seems to be right.

We must hope that this hypothesis does not get to the likes of the A.I. question master.
Roy

Oceanography/biology is it now? Whatever next...

This question has nothing to do with ships and boats, this falls under the scope of marine biology.🤔
Thankfully I have been interested in it in the past.

Here's the video I was talking about yesterday.
It's very interesting and informative.

Thank you Ross & Roy for your explanations. I asked merely out of curiosity, not a rapid desire to climb to the top.

I'll carry on pitting my feeble wits against the QotD machine, but am quite happy to be floating somewhere in the middle of the listings.