Please can you help in identifying twin engined flying boats,?the ones that are amphibious
There are still a lot of Amphibious aircraft flying. The Catalina, The Mallard, The Grumman, The CL-415, the Hu-16 Albatross and more . Some info from Wikipedia:
An amphibious aircraft or amphibian is an aircraft that can take off and land on either land or water. All Amphibian aircraft are thus classified both as seaplanes and make up the rarest subclass of seaplanes. Like all seaplanes, Amphibious aircraft are typically flying boats and floatplanes — but while their major physical attributes are those placing them within those broad classes, amphibians are also engineered with retractable wheels making them amphibious — at the expense of extra weight and complexity, plus diminished range and fuel economy factors comparative to planes specialized for land or water only.
Amphibious aircraft have been built in various nations since the early 1920s, but it was not until World War II that saw their widespread service. The Grumman Corporation, a United States-based pioneer of amphibious aircraft, introduced a family of light utility amphibious aircraft - the Goose, the Widgeon and the Mallard - during the 1930s and the 1940s, originally intended for civilian market. However, the military potential of these very capable aircraft could not be ignored, and large numbers of these versatile aircraft were ordered by the Military of the United States and their allies during World War II, for service in air-sea rescue, anti-submarine patrol, and a host of other tasks. The concept of military amphibious aircraft was so successful that the PBY Catalina, which began life as a pure flying boat, introduced an amphibian variant during the war. After World War II, the United States military ordered hundreds of the Hu-16 Albatross and its variants for use in open ocean rescue, for the United States Air Force, Coast Guard and Navy.
The capabilities of these amphibious aircraft were found to be particularly useful in the unforgiving terrains of Alaska and northern Canada, where some remained in civilian service long after the war, providing remote communities in these regions with vital links to the outside world. Nonetheless, with the increased availability of airstrips and amenities in remote communities, fewer amphibious aircraft are manufactured today than in the past, although a handful of manufacturers around the world still produce amphibious aircraft (flying boats or floatplanes with retractable landing gear), such as the Bombardier 415, the Grumman Albatross and the amphibian version of the Cessna Caravan.
Gravity always wins!