Verses with the word drowned in the New Testament (2 verses):

Matthew 18:6
But whoso shall offend one of these little ones which believe in me, it were better for him that a millstone were hanged about his neck, and that he were drowned in the depth of the sea.

Hebrews 11:29
By faith they passed through the Red sea as by dry land: which the Egyptians assaying to do were drowned.