There are rough waters out there on the high seas. And then there’s a Royal New Zealand Navy warship getting absolutely swallowed by the Southern Ocean.

Old footage is making the rounds again, showing a patrol vessel heading directly into mountainous seas near Antarctica. Filmed from the bridge, the clip begins with the bow rising and falling through violent whitewater. Then a much larger wall looms ahead. The ship plunges into a trough, the wave detonates over its bow, and the windows briefly disappear behind an avalanche of water.

It’s an oldie, but a (terrifying) goodie. Check it out below.

Somehow, the vessel keeps going. And somehow, the video has amassed nearly 26 million views on one YouTube upload alone.

The ship is identified as HMNZS Otago, an 85-meter (279-foot) Royal New Zealand Navy offshore patrol vessel used for surveillance, fisheries enforcement and search-and-rescue operations.…