Noah of the Blood Sea is a Manga/Manhwa/Manhua in english language, Adult series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

When a family of three book passage on a luxury liner they soon realize that the glamours cruise ship is nothing but a facade as a series of mysterious killings spread throughtout the ship. With the sea proving no escape, how will they survive?