pontoons or underside of the aircraft make this possible. Other aircraft models can manually switch between landing wheels or pontoons. Thus enabling a land based aircraft to become a "float-plane". Many remote settlements are supplied with various goods by means of a float plane. Remote hunting and fishing lodges will often use a float plane service to transport their customers to and from their facilities.
Many float planes use pontoons for flotation. They come in various sizes and models. Most will have several compartments in case of puncher to a pontoon. If not too badly damaged the pontoon can still land or take off the aircraft in an emergency. A turn-able fin on the back of the pontoon aids in turning the float plane at low speeds.
Water ways are often used by man to transport people and materials thus often resulting in a settlement beside the water. With no run way needed. the float plane is perfectly suited to supply air service cheaply and effectively.
Daily commute and mail services are performed by float planes world wide. Aircraft engineers have designed and built many variations of the float plane.
Howard Hughes "Spruce Goose" is a famous flying sea plane. The original concept was to be able to transport troops quickly under enemy radar. Although it did fly during testing, it was plagued with technical difficulties.
The De-Havilland Beaver and Otter are 2 aircraft that are often utilized as float planes. Powerful engines and a large wingspan aid the machine's ability to take off with extra payload. Pontoons add weight to an aircraft. Having an airframe that allows a good payload after installation of pontoons is crucial for commercial and private use. Basically there is 2 types of float planes. Those that use pontoons attached by struts or aircraft that use their bottom fuselage as the hull. Small floats or pontoons will also be attached to the wings on these models normally.