A common way of referencing canal boat steelwork is as follows.
Pontoon boat hull type. Pontoon boats are typically cylindrical and do not have inside access. The combination of their weight and power means they move. For sailing ships.
In a general sense pontoons are boats that have large flat decks. Boats with three pontoons are sometimes called tri-toons. The boat is in great condition everything is working perfectly.
Generally speaking its any sort of boat with a large flat deck thats mounted atop two or more metal tubes called pontoons. Size is most often determined by how many passengers you believe will be accompanying you on your journeys. Boats with three hulls are sometimes called tri-toons.
Due to the buoyancy of the tubes designers of these types of boats are able to create massive decks with expansive lounge. Pontoon boats are used for pleasure on lakes and rivers and in some cases on oceans close to shore. Something like a sponson on a three point hydroplane only running the full length of the boat.
A pontoon boat is basically a big almost square floating platform with a blunted stern and equally blunted flat. Boats come in a wide variety of shapes and sizesand so do their hulls. Sailing boats slow-moving boats and large boats like cruise ships have displacement hulls.
A few minor dents pictures below on the starboard side and another minor dent on the stern port side. A Pontoon boat is a watercraft that uses 2 or more rows of sealed tubes called pontoons for buoyancy. The best place to start is with what a pontoon boat actually is.