Japan, Tsunami. Coast Guard ship rides over the tsunami waves. 日本 - 津波
Why Hacker News recommends it
Cited in threads about earthquakes and tsunami warnings as a visceral view of what a tsunami wave looks like at sea.
What it is
Amateur footage of a Japanese coast guard boat riding up and over large tsunami waves after the March 2011 Tohoku earthquake. It is short and unedited.
Recommended by 0 HN commenters across 0 different months, 2024 to 2026.
What Hacker News said
Cites isoprophlex · 2024-08 · on “Tsunami Alert Issued for Japan”
IIRC the water displacement on open seas is super modest, only when the thing hits shallower water near the coast does it become a problem Edit: [this video] They're a few miles off the coast, ~10 m high waves, 38 m deep water according to some comment that translates the audio. pretty scary vid, for sure.
Cites x______________ · 2025-07 · on “M8.7 earthquake in Western Pacific, tsunami warning issued”
Here's a visual of your thoughts from the Fukushima event: [this video] Japan, Tsunami. Coast Guard ship rides over the tsunami waves. 日本 - 津波 4.1M views · 14 years ago
Cites zamadatix · 2026-08 · on “Magnitude 7.7 Earthquake – 68 km NNW of Ende, Indonesia”
Same video with normal controls: [LINK] Longer & unedited video from cited source: [this video] . based on the translation of what folks are saying, this is a 10 meter wave at 38 meter sea depth.