Wired also explained that before. In the article of this post they linked to an older article (https://www.wired.com/story/cleaner-ships-more-expensive-hol...). It goes into detail about the scrubbers. Open, closed and hybrid systems. Anything other than a closed system is bad. A closed system itself might or might not be bad (depends on what's done with the waste).
Note that apparently the most common sulphur amount in fuel is around 2.7% (https://www.exxonmobil.com/en/marine/technicalresource/news-...). Currently there's not too much available fuel at 0.50%. What I heard is planned is that they're going to mix the 2.7% and 0.1% sulphur fuel to get to 0.5%.
Going from 2.7% to 0.5% sulphur fuel is apparently an additional cost of 15 billion USD/year. In my opinion once they're at 0.5% new legislation (by the IMO; an organization which basically sets these rules) should be introduced that reduces it further. Often in shipping the actual implementation date is 3-5 years, sometimes 10 years into the future. So new legislation should be introduced to reduce things further.
Secondly, companies can get a significant competitive advantage by not following these rules. As such, countries should be strictly checking if ships and shipping lines are following this. Unlike other industries it's pretty common that a captain is jailed if certain rules aren't followed.
Captains of large merchant vessels are salaried or even quasi-gig employees. Indirect operational control is based at the company hq, which is generally in a different country than the port. This leads hq to order their captains to do unsafe or illegal things to maximize short term profit. I recall an article on hn about a captain who was fired for sailing around a tropical storm instead of straight through it, costing the company a few extra days.
Rules targeting captains (essentially disposable middle management) will be ineffective for this reason. They should instead target the ship itself (capital asset).
Note that apparently the most common sulphur amount in fuel is around 2.7% (https://www.exxonmobil.com/en/marine/technicalresource/news-...). Currently there's not too much available fuel at 0.50%. What I heard is planned is that they're going to mix the 2.7% and 0.1% sulphur fuel to get to 0.5%.
Going from 2.7% to 0.5% sulphur fuel is apparently an additional cost of 15 billion USD/year. In my opinion once they're at 0.5% new legislation (by the IMO; an organization which basically sets these rules) should be introduced that reduces it further. Often in shipping the actual implementation date is 3-5 years, sometimes 10 years into the future. So new legislation should be introduced to reduce things further.
Secondly, companies can get a significant competitive advantage by not following these rules. As such, countries should be strictly checking if ships and shipping lines are following this. Unlike other industries it's pretty common that a captain is jailed if certain rules aren't followed.