What movie (80s or 70s) involves a boat of people boarding a haunted ship

I remember watching a movie when I was younger about a group of people finding an abandoned ship and boarding it. It was a large ship too, like the titanic and it was demon possessed and started killing off the people who boarded it I think the box of the movie has the ship with a jaws mouth painted on the front and all the people in a lifeboat in front of the ship. Does anyone know what movie this was?

Was it Deathship ?

I wonder if the recent flop Ghost Ship was a remake? The plot summaries are rather different, but the posters look suspiciously similar.