The trailer is quite narrow and fits between the Pontoons. The Trailer actually lifts the deck of the Boat and does not support the Pontoons and the wheel base is quite small. This style of pontoon boat trailer can be retrieved and launched in the shallowest of water, since the Pontoons are very low to the ground.
Tanking is, as its name suggest a method of sealing a wall to prevent water ingress (think 'water tank). often mis-specified as a cure for damp problems it is basically a waterproof cementious slurry (wet mix) that is applied to a surface to prevent water penetrating the internal surface of a building..
By Doug Stelling. The annular plate-to-shell junction is one of the most critical areas in an API 650 Tank, and is one of the most difficult areas in which to assess corrosion. The annular plate typically rests on a crushed stone or concrete ring wall, and joins the highly stressed shell of the tank to the bottom plates. The bottom plates are for the most part supported by the tank pad or foundation, and are lowly stressed.