World Record Name: the world's earliest known record of the Diaoyu Islands Hydrographic needle is (Nautical Guide) is a Chinese Ming Dynasty "wind both hands."
World record holder: "wind both hands."
World record fields: Hydrographic needle is (Nautical Guide)
World Record rules: the world's earliest known record of the Diaoyu Islands Hydrographic needle is (Nautical Guide).
World record number: 20120900057
World Record valid: to record was broken up.
World Record Witness: Carrying the Flag of World Records certified teacher 001
World Records Source: World record library to Carrying the Flag
World Record Certification date: September 30, 2012
World Record Details:
                 Currently known the Diaoyu Islands Hydrographic needle through (Nautical Guide) is the world's earliest recorded Chinese Ming Dynasty "wind both hands".verified in Hong Kong on 30 September 2012.

"Wind both hands" is a hydrographic needle through the Ming Dynasty, had hidden in Oxford Baldry's Library (Bodleian Library). 1935 Beijing Library Fellow of the library to organize Chinese historical records, transcribing "wind both hands" and other Chinese classics. Originally note book, the cover of "wind both hands" words. Author name unknown. Up in 1961 to the publication of "two kinds Hydrographic needle through," including "wind both hands."
Hydrographic needle is called needle path, the Ming Marine navigation manuals, including every one route compass navigation, astronomy, navigation and physiographic, hydrological records.

Yuan, Ming and Qing compass for navigation is 24 compass bearing water. This technology uses eight heavenly stems (10 heavenly stems less in the middle of the "E" and "self"), 12 Earthly Branches, and gossip of the four directions, the mariner's compass circle divided into 24 equal parts, so that the direction can be accurately to instruct。

 
Ming Dynasty mariner's compass azimuth Figure 24 The following table Ming nautical compass in degrees.

Sub-0 degrees north
Dec 15 degrees
Ugly 30 degrees
Gen 45 degrees northeast
Yin 60 degrees
A 75 degree
D 90 degrees east
B 105 degrees
Chen 120 degrees
Sunda SE 135 degrees
Pat 150 degrees
165 degrees C
Afternoon due south 180 degrees
Ding 195 degrees
Not 210 degrees
225 degrees west-kun
Shen 240 degrees
G 255 degrees
Unitary due west to 270 degrees
Sim 285 degrees
Xu 300 degrees
Dry Northwest 315 degrees
Hai 330 degrees
Azelaic 345 degrees

     Single needle compass needle compass single use only one direction, and as a "single" word, for example: single-chen needle (120 degrees), single unitary needle (due west to 270 degrees). Some charts with "Dan" replace the word "single" word, Dan unitary unitary with the single needle needle. For example, "Zheng He map" "Taicang port sail needle with Dan B" means "Taicang port sail sailing with the compass direction of 105 degrees。”
 

Oxford University Baldry's Library "wind both hands," the Vice-page note there is a line in Latin, indicating that this is a 1639 note the Chancellor of Oxford University presented. 1639 Chong twelve years together, determine which note this is a clear note of this. "Downwind hands" ordered a text, there are the words: "Youyi pull out prevail, Paul Depot boat calm." "Treasure boat" refers to the vessel Zheng He, "pull out" refers to Yang Guo Astronomy Technology, is the "Zheng He map" in the terminology used. "Yongle reign been sent to Western countries such as open No. Sho, Repeated alignment pin road, pull out patterns, sea island pictures ... Yamagata water potential." Clear that "wind both hands," the author based on the existing road map pins for more positive needle path, led by star maps, and the waters Yamagata. "Downwind hands" who very likely that a correction Zheng Bao ship boat division,'s books should be Ming Yongle. Dutch scholar Dai Wenda (Duyvendak) concluded that "the wind both hands," the seventh in Zheng He's voyages, that Ming Xuan Zongxuan Germany five years (1430) to complete. British sinologist Joseph Needham agreed to wear Venda for "wind both hands" into the draft's assertion. "Downwind hands" may be based on a hydrographic needle Yuan corrected from. Yuan has developed the Navy, the Navy has dispatched to attack Japan and Java, the Yuan Dynasty naval hydrographic needle must have been a kind of nautical guide "Downwind hands" and pray prayer protect the country sheltering the people Miao Ling Zhao Ying Ming was Tianfei, "Ming the Goddess" is the Yuan eighteen years (1281) Tianfei bestowed the title Khan, has been used to Dollar positive fourteen years (1354). Yongle years 1409, Yongle Emperor gave protect the country sheltering the people Miao Ling Zhao Ying Hongin Puji Tianfei. "Downwind hands" in protecting the country sheltering China Miao Ling Zhao Ying Yuan Ming was Tianfei both titles "Ming the Goddess" Ming another title "protect the country sheltering China Miao Ling Zhao Ying," invisible "wind both hands" is the Ming Dynasty sailing boat division correction guide from.
"Downwind hands" rich in content, can be divided into several parts:
Meteorological observations, weather forecast
"There must be windy spring in the second quarter, when warm weather, the afternoon or clouds, or thunder, there must storms, winds, should be avoided." "Cloud foot Hiiro has red, too see daylight, Samsung shaken, the main windy"
Hazard warning
"If the boat back to the Tang, greed East, sea white red see a hundred different birds, but Miles Changsha, can prevent can prevent the" big temple "folio has nerd rock, light can not close, rapid current" Temasek door "night can not sail "
Compass navigation records
Records of celestial navigation
Hydrological records
Physiographic observation record
Worship