Answer: foundered

AnswerCrossword Clue
FOUNDEREDFilled with water and sank.
FOUNDEREDCame to grief
foundered(of a ship) Fill with water and sink
foundered(of a hoofed animal, esp. a horse or pony) Succumb to laminitis
founderedFOUNDER, to become disabled
foundered(of a plan or undertaking) Fail or break down, typically as a result of a particular problem or setback