The growth on that hull! Whooa!
Santa's beard is a 'three day's growth' compared to that. No wonder they were drifting onto shore.
The missing keel and rudder is the result not the cause, methinks.
The fact, that they had a rough afternoon 16.00-20.00, according to the weather data, is not the cause of this mishap.
It looks like, was self inflicted by a dirty bottom and lack of nous.