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The beacons consist of two lights that are separated in distance and elevation, so that when they are aligned, with one above the other, they provide a bearing. Range lights are often illuminated day and night. In some cases the two beacons are unlighted, in which case they are known as a range in the United States or a transit in the UK. The ...
Two-phase power can be derived from a three-phase source using two transformers in a Scott connection: One transformer primary is connected across two phases of the supply. The second transformer is connected to a center-tap of the first transformer, and is wound for 86.6% of the phase-to-phase voltage on the three-phase system.
Cunningham downhaul. In sailing, a cunningham or cunningham's eye is a type of downhaul used on a Bermuda rigged sailboat to change the shape of a sail. It is named after its inventor, Briggs Cunningham, a victorious America's Cup skipper and yacht builder.
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A Laser 2 flying its spinnaker, with the crew on the trapeze. The Laser 2 is a sailing dinghy, built predominantly of fibreglass. It has a fractional sloop rig, a raked stem, a plumb transom, a transom-hung rudder controlled by a tiller with an extension and a retractable daggerboard. It displaces 170 lb (77 kg).
The boat is much more simple to sail, yet lacks the performance of the original dinghy due to its extra weight. The Club 420 is used extensively on the youth race circuit in the US, with over 5,000 boats in North America, [6] but is not sailed in most other countries. It cannot be used at I420 class events.
The crew can use a trapeze to balance the boat. [1] [2] [6] For sailing downwind the design may be equipped with a symmetrical spinnaker of 226.0 sq ft (21.00 m 2) and in fact was the first design equipped with a spinnaker bow chute. [1] [2] [6] The design has a Portsmouth Yardstick D-PN of 82.6 and a RYA PN of 879. [30] [31]
The J/22's helm is quick and responsive-distinctly dinghy-like. The boat is fitted with the same rudder assembly as the larger J/24, which results in most positive steering, but the helm is not heavy or difficult even in heavy weather. Because the helm is so light, the boat accelerates well and scorches along downwind.