Race to Araxá - Senku vs Stanley: Who gets there first?

Yeah you are correct with the last theory of yours. You can clearly understand in the manga that stanley went behind them bit later turned to go to Araxa as per Xeno's instructions and also followed them taking stops himself (they are humans too bro) also why the hell are you explaining it sooooooo bigggggg like not that many people care but after seeing the animes many unnatural things we can say that it doesn't compromise in science at all so the route might be faster in some terms or due to their equipments and all or we can consider it ourselves. But thanks for the effort tho 👍

Wow, talk about doing the math. I assumed that Stanley was heading towards the Amazon to cut them off, but was passed by the stealth ship. They turned around after Dr. Xeno started getting naughty with the radio signal and they realized a stealth ship was probable.

I don’t have time to crunch the numbers right now but I suspect this could’ve bought the science team another week or so at least.

But even adding that and assuming Stanley takes a few days to resupply at various points, maybe slowing down to pick their way through the Strait of Magellan (which may have drastically changed in 3700 years) the kingdom of science is still cutting it very close at best.


ETA: we may also need to rethink our assumptions about the Perseus’ speed. The great circle route from Tokyo to San Francisco is about 5200 miles which took the Perseus about 40 days (iirc) with the North Pacific Current. It traveled an average of 5.4 miles/8.8km per hour, on a combination of sails and fuel. This is twice as long as your calculation for Stanley’s trip for 2000 miles less.

Of course, Stanley is undoubtedly going much faster than this since he is relying entirely on fuel and travelling lighter (fewer people and supplies), but can he really go 3.5 times faster?

@Arxeas I totally forgot about that scene, if we are understanding it correctly it took both sides the same amount of time to reach the mouth of the Amazon and we can adjust the speed estimates accordingly.

I think it raises another question though. It didn’t look like the Perseus went far upriver, if it went up the river at all, before turning around, and if it is significantly faster than the stealth ship which is a reasonable assumption, would they have unknowingly overtaken the stealth ship again at some point?

As for the Perseus’ speed, I agree 8.8 km/h seems very low for how it’s portrayed and the implications for the speed of the science boats. I think it’s a very safe assumption that carrier!Perseus is faster than sailboat!Perseus, it’s just a question of how much.

Now that's a very impressive analysis! One of the best Dr. Stone posts I've seen. :) Since I'm familiar with the manga I know how it will end, so I will stop here with my comment, but again, really great analysis that is deeply rooted in the Dr. Stone franchise's core theme - science.

Bro the main problem is the weight of perseus. Sailboats can be way faster than carriers and cruise ships (this is from online data I didn't attach sites sorry). In many places in history sailboats have played significant role in arrivals and departures of ships. Also the weight of oil that perseus took with them is no joke. Oil is very heavy but important stuff for boats with mechanical power.
I agree that speeds of ships are not given so I would say that all our asumptions (going through all that is happening in anime) are nearly correct because I was not able to get proper sense of timing in manga so thanks for this post.