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A jetboat is a boat propelled by a jet of water ejected from the back of the craft. Unlike a powerboat or motorboat that uses an external propeller in the water below or behind the boat, a jetboat draws the water from under the boat through an intake and into a pump-jet inside the boat, before expelling it through a nozzle at the stern.
A third modification was as a transport for PBRs (patrol boat, river) from repair stations at Da Nang (YR-71) and Tan My (PBR Mobile Base 1) to outlying points at Cua Viet, and the Cua Dai rivers. PBR main propulsion jet pumps were easily damaged by ocean salt water which necessitated the boats being carried by another craft to their duty ...
The water does not circulate in through one tube and out through the other. The internal-combustion analog of the pop pop boat engine is the valveless pulse jet. Commercial pop pop boats have usually been made out of tinplate. The hull of the boat may be made out of any material that floats. Homemade pop pop boats are often made out of wood.
Personal watercraft boat conversion kits exist as Waveboats. [2] The United States Coast Guard defines a personal watercraft, amongst other criteria, as a jet-drive boat less than 12 feet (3.7 m) long. [3] There are many larger "jetboats" not classed as PWCs, some more than 40 feet (12 m) long.
Beriev Be-200 filling water tanks in the Mediterranean Sea while in operation in Mount Carmel forest fire in Israel. The Beriev Be-200 Altair (Russian: Бериев Бе-200 «Альтаир») is a jet-powered amphibious flying boat of utility type designed and built by the Beriev Aircraft Company.
The Saunders-Roe SR.A/1 was a prototype flying boat fighter aircraft designed and built by British seaplane manufacturer Saunders-Roe.It was the first jet-propelled water-based aircraft in the world.
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