Even worse for planes on flight radar 24.
Surprisingly, the bigger the boat the more effective. We tend to have a bias against larger machines, but often they can be the cleanest in proportion.
[1] https://www.ademe.fr/sites/default/files/assets/documents/86...
As for the comparison to trains, it matters a lot whether you're talking about diesel or electric trains. Most train lines in Europe are electrified, and as electricity production switches to solar/wind, it may actually end up being cleaner than ships. (Although work is also being done on making ships cleaner. But new international laws are probably needed to get everybody on board.)
The real issue, though, isn't no much whether the transport happens by boat or train, but that it happens at all. The scale of global shipping is this big because everything is produced on the other side of the world. Big ships make that transport more efficient, but a more egalitarian global economy that didn't create incentives for companies to seek out every low-wage country and tax haven, would make local manufacturing more attractive and reduce global shipping.
https://en.wikipedia.org/wiki/MARPOL_73/78#IMO_2020
https://www.imo.org/fr/MediaCentre/HotTopics/Pages/Sulphur-2...
https://www.imo.org/en/MediaCentre/PressBriefings/pages/02-I...
The upper limit of the sulphur content of ships' fuel oil was reduced to 0.5% (from 3.5% previously) - under the so-called "IMO 2020" regulation prescribed in the MARPOL Convention. This significantly reduces the amount of sulphur oxide emanating from ships."Maritime transport emits around 940 million tonnes of CO2 annually and is responsible for about 2.5% of global greenhouse gas (GHG) emissions (3rd IMO GHG study)."
https://ec.europa.eu/clima/policies/transport/shipping_en
The problem is that we (as a species) are moving far too much, far too far.
https://cs.m.wikipedia.org/wiki/Starship_(raketa)
And it makes sense if you think about it - as you scale up, the ammount of fuel you can carry goes up roghly by cube while structure mass, forming a shell effectively arround the fuel, goes up by square of size of the rocket.
Similar things for air resistance - as you scale up yuour rocket the front part creating the most drag will scale more slowly than the volume of the rocket that goes to fuel, payload and structure.
No wonder Starship is already at 9 meters of width and 18 m has been mentioned as a possible future upgrade. Its already bigger than the massive 66+ meter high medieval watchtower in my home town yet it can fly to sub orbital speeds without its first stage booster (which is even bigger)!
Assuming that pollution primarily caused by fuel usage of course.
6000Nm and, say, 25 knots (probably a bit on the high side, but not by much) should add 240 hours of steaming or 10 days to the voyage.
(This will be somewhat offset by the lower speed through the channel, waiting times &c - I've no idea how long a typical Suez transit is.)
For yachts it is (supposed to be) two days. It's one day to Ismailia on either way and then one for the rest. (The paperwork however, may take longer, but can be arranged in advance.) See more at https://www.noonsite.com/report/suez-canal-transit-informati...
That's a lot of fetch for wind, which transfers energy to the ocean's surface, which travels as waves, which build up because there's no land damping from west to east. Throw in the Antarctic Circumpolar current and weather systems interacting with the Benguela current an Agulhas current... That's a lot of energy getting put into a relatively tiny band of water.
The Cape of Good Hope was previously known as the Cape of Storms based on the aforementioned confluence of forces generally making sea states miserable. The Good Hope part was what putatively happened after you got through it, and the seas you'd have to worry about would generally be calmer.
https://www.marinetraffic.com/en/ais/home/shipid:5630138/zoo...
I see that labeling too, but the Tahia Misr2 is a tug, sister to the Tahia Misr1.
I'm not sure why it's displaying as a pleasure craft.
Edit: The phrase "pleasure craft" is a triple entendre, and possibly a quadruple.
EDIT: Just saw they had outages, but I guess nobody ever expected it to be trending on twitter. Works fine for me.
Does anyone know the transit time to pass through the canal versus going around the South Africa route?