http://steamcommunity.com/sharedfiles/filedetails/?id=108040571 Its medium sized and it is sorta classic. It doesn't really have any special features but it is a cool map.
I've seen this on many ttt servers that i used to play on, its a perfect medium-ranged map, and is balanced for either side, innos or traitors. +1
Thats not a clone. Just because they are on a boat and look similar does not mean that they are clones. Roy the Ship does not have a chopper and vessel does. Plus I don't think I see vessel on the rotation and if it is there then no one plays it.
You get the gist,people didn't like vessel and it got removed. It wouldn't be different for this map either.
But Roy the ship is a more popular version of Vessal. You can't judge how a map will do based on a similar map.
You're thinking of another map, And it's against the rules to spam horn, you can be slain for multiple offences of that. This map has no horn btw ^-^