The video shows the ship rocking and rolling, apparently not under control -- at least she is just lying in the troughs rather than meeting the seas. No sails
up, but can't tell, of course, if the auxiliary was running. The news story says 25 knots of wind
and 10-13 foot seas, which should be survivable. The video shows some breaking waves and blown spume, which is consistent with a strong breeze on the Beaufort
scale (21 to 26 knots)
OTOH, the thing did sink. Maybe they were taking on water
really fast and when the bilge pump
went, the thought they had no choice but to leave. On yet another hand, why only one pump on a vessel that size?
On the final hand, I'm basing all of this on a news story, possibly written by someone whose knowledge of boats and the sea is non-existent, and who interviewed a CG swimmer rather than any member
of the crew.
Maybe I'll get back to work now ....