Likely extremely high waves that had a wavelength that exactly matched the length of the ship - the bow and stern got propped up by waves, with the center of the vessel out of the water, and it cracked.
So people do realize that there is precisely NO actual evidence there are any arms for Syria on this vessel?
Likely someone just saw the news of the incident and dramatic pictures and simply embellished the story.
And that is one of the theories to explain why the Edmund Fitzgerald sank on Lake Superior in 1975-fully loaded with
iron ore.
Likely extremely high waves that had a wavelength that exactly matched the length of the ship - the bow and stern got propped up by waves, with the center of the vessel out of the water, and it cracked.
This had been a common occurence of the coast of South Africa. Supertanker sized ships too large for the Suez Canal were broke in two by the “Cape Rollers”.