An increasing number of long distance regatta sailors are using wind vane self-steering because of the fact, that the sails are always kept in optimal angle towards the wind, and hence the speed of the boat is kept at the possible maximum.
42.
The increased low wind capabilities of optimized, modern devices enable downwind steering down to 1.3 m / s apparent wind and 1.5 kn of boat speed properties that make an electronic steering device nearly redundant and enable crossing the doldrums under wind vane self-steering.
43.
A cross on Wind Vane Hill, Cape Evans, was erected by the Ross Sea Party, led by Captain Aeneas Mackintosh, of Sir Ernest Shackleton s Imperial Trans-Antarctic Expedition of 1914-1917, in memory of three members of the party who died in the vicinity in 1916.
44.
The predictions are extrapolated from information provided by advanced weather satellites, which transmit gigabytes of data each day on Earth's surface and atmospheric conditions, as well as on information from radar, high-altitude aircraft, weather balloons and the more earthbound thermometers and wind vanes of surface stations.
45.
A cross on Wind Vane Hill, Cape Evans, was erected by the Ross Sea Party, led by Captain Aeneas Mackintosh, of Sir Ernest Shackleton s Imperial Trans-Antarctic Expedition of 1914 1917, in memory of three members of the party who died in the vicinity in 1916.
46.
Fire-control systems are often interfaced with sensors ( such as sonar, radar, infra-red search and track, laser range-finders, anemometers, wind vanes, thermometers, barometers, etc . ) in order to cut down or eliminate the amount of information that must be manually entered in order to calculate an effective solution.
47.
Traditionally wind direction is given as one of the 8 octants ( N, NE, E, SE, S, SW, W, NW ) because that is more precise than merely giving one of the 4 quadrants, and the wind vane typically does not have enough accuracy to bother with more precise indication.
48.
The Merchants Exchange served as one of Boston's " great gathering-points of the traders-- the marble-paved and frescoed hall . . . with its newspaper files, bulletins, wind vane, and ship registry . " It was " elegant . . . with a fine reading-room, . . . and besides accommodations for the post office, and for several insurance and brokers'offices, affords many conveniences for the mercantile community ."
