Seamanship_Secrets_185_Tips_-_Techniques_for_Better_Navigation-_Cruise_Planning-_and_Boat_Handling_Under_Power_or_Sail_(Re)_e..
CAUTION AROUND OUTLYING REEFS Charts produced by foreign agen- cies often use smaller scales for close coastal navigation. For e ...
chart plotting and preparation 31 Locate the grid box. Find the pair of latitude lines (parallels) and the pair of meridians (l ...
32 seamanship secrets 10 ′ 50 ′ 40 ′ A 30 ′ 20 ′ 20 ′ 30 ′ 40 ′ 50 ′ 71 °W7 10 ′ 0 °W 41 ° 10 ′N 10 ′ 50 ′ 40 ′ B 30 ′ 20 ′ 20 ′ ...
chart plotting and preparation 33 to nothing at the poles. Th us, use only the latitude scale (or the chart’s distance scale) to ...
34 seamanship secrets to go, and you have a true direction. All meridians of longitude on the chart point toward the true, or ge ...
chart plotting and preparation 35 run in a powerboat from Key West across the Gulf of Mexico to Houston, the variation will chan ...
36 seamanship secrets APPLYING VARIATION TO FIND YOUR MAGNETIC TRACKLINE You can read true directions from the outermost ring of ...
chart plotting and preparation 37 navigational equipment consisted of a magnetic compass, chart, and radar. As we cleared the je ...
38 seamanship secrets it is stationary. Sight the object with a handbearing compass and keep the compass up to your eye. Have yo ...
chart plotting and preparation 39 steady up on 000° on the steering compass. Have the helm call out “Mark!” the exact moment the ...
40 seamanship secrets I mentioned vector charts in Chapter 1. Unlike raster charts, which are simply scanned versions of traditi ...
chart plotting and preparation 41 Supplies Needed to Make Paper Chartlets X one piece of posterboard X pencil X soft (kneadable) ...
42 seamanship secrets Even so, you should carry the original full-color chart onboard for refer- ence. Keep the original below i ...
chart plotting and preparation 43 Make the posterboard template ½ to ¾ inch smaller than the sketchboard’s edges. Draw in your t ...
44 seamanship secrets Cut out and number the fi rst chartlet from the fi rst chart copy. Cut out and number the second chartlet ...
chart plotting and preparation 45 Complete 90% of Your Navigation by Annotation Many charts contain a confusing web of lines sig ...
46 seamanship secrets Ta p e i t. Tape each track with removable Scotch Magic Tape (or dull-sided tape). Use continuous strips o ...
chart plotting and preparation 47 Save Time with Custom Distance Scales Measuring distances on a 1:80,000 scale coastal chart is ...
48 seamanship secrets Invaluable Copilot: Th e Navigator’s Log Enter anything into the log that directly or indirectly infl uenc ...
chart plotting and preparation 49 Some ideas for the sailing comments column might be: sails hoisted, sail changes, and reefi ng ...
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