Nevertheless small flying boats carrying no more than three people are once again becoming the norm. They're still expensive to buy, but they're a great vehicle for people for whom landing strips aren't a viable option because the places they want to go are rivers, or lakes amongst forests.
Let's take a look at some of the craft that are now available. The difference between the original models and the modern ones is that many of the modern craft are kitsets, or models that can be "wrapped up." (The only time the original flying boats were wrapped up was if Nature or a false landing did the job for them.)
Take the Catalina range, for instance. The Catalina can carry two people up front and a third behind, with plenty of room for baggage. Furthermore with full tank capacity added, this little plane can fly for up to ten hours.
The floats on modern planes are called sponsors. In the Catalina's case they are made of foam-filled fibreglass attached to the lift struts and can be used as entry or docking steps as well. But flying boats also need landing gear, which has to work both on sea and land. Thus as well as sponsors and the retraction mechanism needed for water landing, the Catalinas have hydraulic brakes and tyres.
A particular advantage of modern flying boats is their ability to be folded up -the Catalina, for instance, takes about ten minutes to fold the flaperons back without any need to disconnect them, and then the whole craft can be put on a trailer and driven home!
A different kind of seaplane is the Flying Inflatable Boat. This is one of the class of ultralights, and these models have been used widely by luxury hotels and naval special missions and Greenpeace. The FIB's ability to take off and land on all water surfaces is one of its great advantages. Unlike the Catalina, the passengers are not enclosed in a cabin.
However, the pontoon or sponson system, popular in the ultralight field, was not found safe and seaworthy for a weight shifting machine - for the same reason that single hull craft perform better in rough seas than catamarans. (The Catalina has a single hull.)
The FIB is of the Rigid Inflatable Boat type, which means it permits safe take-offs and landings in fairly rough seas, as the boat can jump from one wave to another until it reaches its take-off speed. The boat's design also protects the whole machine (including the propeller) from big waves, leaving the pilot, passenger, and engine dry. And even in bad landings, the boat slips around to avoid capsizing and damage.
There are great advantages in this type of craft: it can take off in 150ft and six inches of water depth. It can be assembled in 15 minutes, and stores easily in a garage. You don't even need a pilot's license to fly the FIB (though as with most ultralights you'll be expected to take at least a ten-hour instruction course.) It can fly as high as 10,000ft, and you can even shut the engine off and glide back down to the water, landing without power.
There's still a place for flying boats in the search and rescue arena, and in aerial and maritime surveillance. One craft, Seawolf, is specially designed for such work and can be equipped with stabilised FLIR (Forward Looking Infrared) with video camera and Digital Multi-Spectral Imaging System for the most sophisticated of such roles. The Seawolf can even collect oil and water samples. It has a 14 hours flight endurance, excellent visibility, radar and navigation capability. It's also available with rescue pods for land or sea and for different climates from the Arctic to tropical areas.
It's unlikely any of us will ever take a trip on a luxury flying boat, more's the pity, but at least the excellent concept of a plane that can land on water has never been entirely dismissed.
