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… The rate of change in wind speed depends on terrain and is therefore different for open country found near most … and the exponential relationship. For urban flight using a reference wind speed measured at takeoff location is not … Supporting research document: Urban airflow: what drone pilots need to know - NRC Publications Archive - …
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… : 2021-03-19 We issue Ship Safety Bulletins for the marine community. Visit our Website at www.tc.gc.ca/ssb-bsn … Bulletin provides revised temporary measures pertaining to marine personnel certificates, discharge books, marine medical certificates and general marine counter …
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