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The first commercial side-scan system was the Kelvin Hughes "Transit Sonar", a converted echo-sounder with a single-channel, pole-mounted, fan-beam transducer introduced around 1960. In 1963 Dr. Harold Edgerton, Edward Curley, and John Yules used a conical-beam 12 kHz side-scan sonar to find the sunken Vineyard Lightship in Buzzards Bay ...
Hobart "Hobie" Laidlaw Alter (October 31, 1933 – March 29, 2014) was an American surf and sailing entrepreneur and pioneer, creator of the Hobie Cat catamarans, and founder of the Hobie company. He created the Hobie 33 ultralight-displacement sailboat and a mass-produced radio-controlled glider, the Hobie Hawk .
The Holder 20 is a racing keelboat, built predominantly of fiberglass. It has a fractional sloop rig, a raked stem, a slightly reverse transom, a transom-hung rudder controlled by a tiller and an L-shaped lifting keel. It displaces 1,160 lb (526 kg) and carries 260 lb (118 kg) of ballast. [1] [3]
Stronger swells and rising sea levels mean waves crash onto walkways and into seawalls, like at this beach on the eastern end of Waikiki. Hawaii's beaches are disappearing, with about 13 of the ...
The Hobie 33 is a recreational keelboat, built predominantly of a polyester and fiberglass sandwich, with wood trim. Very light for its size with a displacement of 4,000 lb (1,814 kg), it has a 7/8 fractional sloop rig with aluminum spars, a raked stem, a reverse transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel or lifting keel with a bulb weight.
There's a nearly never-ending list of feline world record holders, especially when it comes to their physical traits. Cats really do come in all shapes and sizes! Smallest cat ever: Tinker Toy ...
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