Apparently this is a common practice in that part of the country, they have a public transportation problem and because you can only access this area by sea, they have to do this to get new buses. The boats are called “Bote Peñeros” or pangas. A 26′ commercial fishing panga can carry about two tons of cargo. Strap them together and you can haul a lot of weight if you have to. The problem is that if the weight isn’t distributed evenly and one of the pangas swamps, things will get really bad really fast.
That is a Nice Ferry, Chuao, Venezuela