6:22 AM PT -- According to the police report, obtained by TMZ, cops say they came out to a marina near Miami Beach -- where they responded to a fight on one of the boats. Upon arrival, cops say they encountered Travis Scott, who they say was arguing with occupants on one of the yachts there ... and the person who reported him told the officers to get him the hell out of there.

Cops say they started to escort Travis away from the boat -- at which point they claim he was yelling obscenities at the people aboard -- and once they got past the docks and back to the street area ... where Travis had a ride ready to go.

Cops say Travis told them if he got into the car he was "gonna catch a fade" -- and then they say he was driven away ... only to return 5 minutes later, with the cops posted up and seeing him attempt to head back to the boat. They say they intercepted him ... and claim TS became erratic and belligerent, at which point they arrested him. BTW, they say Travis reeked of booze during all this ... hence the disorderly intoxication charge he was booked on.

Sources close to Travis tell us he's already posted bond and been released, and they see the incident as a "minor charge." In terms of the actual incident, we're told he was just partying and that things got a little out of hand between Travis and the staff when he refused to leave ... but the situation never got violent.

And, it's evident Travis doesn't see his arrest as any big deal ... based on the fact he reposted his mugshot with some enhancements -- headphones and shades.

Travis Scott got arrested for being drunk in public out in Florida -- and his mug shot is a sobering one.

The rapper was taken into custody by cops at the Miami Beach Marina early Thursday morning and booked into the county jail for trespass and disorderly intoxication. He also had to pose for a booking photo on his way in and, as you see, he was not a happy camper.

Official details on what exactly went down aren't available yet ... but we're working on it.

Houston police launched an investigation into the Astroworld tragedy, but Travis was never criminally charged. He's also been arrested for inciting a riot in the past ... and he's been named as a suspect for alleged assaults too -- but those charges ultimately never stuck.

We reached out to Travis' camp ... so far no word back.

Originally Posted -- 5:17 AM PT