I used to work on tuna seiners. About 300 feet long and 45 feet wide with a helicopter on board. Its hard to say the size of your ship. Looks like some of the proportions are off. I would guess the life boats to be about 25 or so feet long, maybe 30. The anchor winch on the bow and the size of the bridge overhand makes that look like a large yacht. But 5 life boats on each side tends to imply about 200 or more people on board. There's an indentation on the side of the bridge which is a walkway. The door area there would probably be about 7 feet tall. The proportions that would work for me would be an 18-20 long life boat and I'm going to guess that its about 350-500 feet long or so.