3 ms·

A ferry in the open ocean is one of the safer places to be during a tsunami. Remember, it's not a surf-style wave, but a gradual increase in water level.

deleted 2mo ago
[deleted]
throwaway894345 2mo ago
boarding the ferry may not be the most pleasant, however.
aziaziazi 2mo ago
After the tsunami, would the current induced by the water drawback disrupt the ferry ability to come back ? I wonder if the ocean “rise” again (water on top of water) or if it’s more a current-style (water push water) movement.
- monster_truck 2mo ago
  Extremely. They are quite slow laterally (a couple knots while docking), the lateral currents (which are not constant or unidirectional) reach 2-4x+, throwing them into whatever happens to be in the way. AFAIK the bigger issue is that the boats are grounded so violently when the water recedes that the hulls get destroyed before they even have a chance. This tends to be why they put everything they have into getting further out to sea the moment a warning is issued.
kylecazar 2mo ago
There's an eerie video that went around of a ship hitting the 2011 tsunami in Japan at open sea. It demonstrates the idea pretty well. https://youtube.com/shorts/igfP5CQAkHU?is=TJqk4lxxhYkK8hQV https://youtube.com/shorts/igfP5CQAkHU?is=TJqk4lxxhYkK8hQV
- zamadatix 2mo ago
  Same video with normal controls: https://youtu.be/igfP5CQAkHU https://youtu.be/igfP5CQAkHU Longer & significantly less edited video from the above's cited source: https://youtu.be/-VcWF8dIDj4 https://youtu.be/-VcWF8dIDj4. There is a comment with the translations of what's being said that adds a lot of info/meaning. Particularly this was at a relatively shallow depth (38 meters) only a couple miles off the coast, the above ferry would spend most of its time in >200 meter waters according to https://www.arcgis.com/apps/mapviewer/index.html?webmap=019a062e3c4440e09aad024ca60c0107 https://www.arcgis.com/apps/mapviewer/index.html?webmap=019a... so would probably look nothing like this at most points in the trip.

deleted 2mo ago

[deleted]

throwaway894345 2mo ago

boarding the ferry may not be the most pleasant, however.

aziaziazi 2mo ago

After the tsunami, would the current induced by the water drawback disrupt the ferry ability to come back ? I wonder if the ocean “rise” again (water on top of water) or if it’s more a current-style (water push water) movement.

monster_truck 2mo ago
Extremely. They are quite slow laterally (a couple knots while docking), the lateral currents (which are not constant or unidirectional) reach 2-4x+, throwing them into whatever happens to be in the way. AFAIK the bigger issue is that the boats are grounded so violently when the water recedes that the hulls get destroyed before they even have a chance. This tends to be why they put everything they have into getting further out to sea the moment a warning is issued.

kylecazar 2mo ago

There's an eerie video that went around of a ship hitting the 2011 tsunami in Japan at open sea. It demonstrates the idea pretty well. https://youtube.com/shorts/igfP5CQAkHU?is=TJqk4lxxhYkK8hQV https://youtube.com/shorts/igfP5CQAkHU?is=TJqk4lxxhYkK8hQV

zamadatix 2mo ago
Same video with normal controls: https://youtu.be/igfP5CQAkHU https://youtu.be/igfP5CQAkHU Longer & significantly less edited video from the above's cited source: https://youtu.be/-VcWF8dIDj4 https://youtu.be/-VcWF8dIDj4. There is a comment with the translations of what's being said that adds a lot of info/meaning. Particularly this was at a relatively shallow depth (38 meters) only a couple miles off the coast, the above ferry would spend most of its time in >200 meter waters according to https://www.arcgis.com/apps/mapviewer/index.html?webmap=019a062e3c4440e09aad024ca60c0107 https://www.arcgis.com/apps/mapviewer/index.html?webmap=019a... so would probably look nothing like this at most points in the trip.