[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-571176-105":53,"doc-detail-571176-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","noaa-nautical-chart-challenge-coastal-navigation","NOAA Nautical Chart Challenge - Coastal Navigation","","NOAA Nautical Chart Challenge introduces coastal navigation and explains how mariners use nautical charts to travel safely in unfamiliar waters. It recounts Francis Beaufort’s early scientific observations and the Vansittart wreck as evidence for the value of accurate charting. The lesson guides learners through key chart elements such as compass rose direction references, depth soundings, and buoy and light symbols, then prompts navigation questions about shoals, depth near markers, bridge passage, and obstacles for specific areas.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/noaa-nautical-chart-challenge-coastal-navigation/571176/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/noaa-nautical-chart-challenge-coastal-navigation/571176.png","ImageObject",442,249,{"name":88,"@type":89},"CatatanPagi","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-22","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":79},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"Why are accurate nautical charts important for ocean navigation?","Question",{"text":108,"@type":109},"The lesson uses the Vansittart wreck to show that uncharted hazards can cause ships to run aground and become unsafe. Accurate nautical charts and other navigational aids support safe travel in and out of ports and along the coastline.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What key elements on a nautical chart help with direction and navigation?",{"text":113,"@type":109},"The compass rose simplifies measuring directions, using true north as the reference point. Depths are shown as numbers over water areas, and symbols and abbreviations represent features such as buoys and lights.",{"name":115,"@type":106,"acceptedAnswer":116},"How do chart challenge questions test coastal navigation skills?",{"text":117,"@type":109},"The questions require interpreting chart details to estimate water depth near markers, determine whether a vessel can pass under a bridge, identify features sticking up from the water, and check for obstacles on routes to marinas.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},571176,1792452147,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":79,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":73},962090894170,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Discover Your World With NOAA  \nNautical Chart Challenge  \nFor as long as anyone in his family could remember, Francis Beaufort wanted to make scientific observations from the deck of a ship. In 1789 at the age of fourteen, he set sail as a sort of officer-in-training aboard the Vansittart, an East India Company tradesman bound for China and the Indies. A central goal of the Vansittart’s journey was to survey the Gaspar Strait, where sister ships of the East India Company had been lost on dangerous and poorly charted shoals.  \nThe Vansittart found the [shoals...by](shoals...by) running hard aground, and taking on water so rapidly that the crew was forced to abandon ship on a tiny reef in the Java Sea. The waters were filled with pirates, so the crew threw thirteen treasure chests overboard, hoping to return later to reclaim them. But when they eventually made their way back aboard two British ships, Malay pirates had burned and pillaged the Vansittart and the crew managed to recover only three of the treasure chests.  \n~ based on Defining the Wind: The Beaufort Scale, and How a 19th-Century Admiral Turned Science Into Poetry by Scott Huler, 2004  \nWhat You Will Do  \nDiscover some of the ways a nautical chart can help a mariner safely navigate in unfamiliar coastal waters  \nThe sinking of the Vansittart provided dramatic evidence of the value of an accurate nautical chart, and Francis Beaufort later became oneof history’s premier hydrographers. Today, NOAA’s O􀀞ce of Coast Survey produces accurate nautical charts and many other navigational aids that help mariners navigate safely in and out of U.S. ports and along the U.S. coastline as far as 200 nautical miles from shore. How important is ocean navigation? You may be surprised to know that even in the “space age,” over 98% of the nation’s cargo is carried by waterborne transportation.  \nHere’s a chance to try your hand at coastal nav- i  \ngation using a modern nautical chart. Watch out for shoals!  \nWreck of U.S. Revenue Cutter TAHOMA which struck an uncharted pinnacle rock offAgattu Island, western Aleutians, September 20, 1914. Courtesy NOAA Ship Collection  \n[noaa.gov](noaa.gov)  \n28  \nNational Oceanic and Atmospheric Administration (NOAA)  \nSCIENCE | Service | Stewardship EXPLORE THE EARTH  \n\n| What You Will Need\u003Cbr>❒ “Segment of NOAA Nautical Chart 11445, Bahia Honda Key to Sugarloaf Key”\u003Cbr>How to Do It\u003Cbr>1. Before beginning your cruise, you need to know a few things about nautical charts.\u003Cbr>Most charts contain A LOT of information, including lights, buoys, wrecks, information  about the sea bottom, shoreline features, water depth, and much more. These features  are often very close together, so charts use   many symbols and abbreviations. A completelist of these symbols is available in a booklet\u003Cbr>\u003Cbr>\u003Cbr>310\u003Cbr>300\u003Cbr>290\u003Cbr>known loaded\u003Cbr>as “Chart No. 1,” which can be down[from](from www.nauticalcharts.noaa.gov/mcd/)[ www.nauticalcharts.noaa.go](from www.nauticalcharts.noaa.gov/mcd/)~~[v/](from www.nauticalcharts.noaa.gov/mcd/)[m](from www.nauticalcharts.noaa.gov/mcd/)~~[cd/](from www.nauticalcharts.noaa.gov/mcd/)\u003Cbr>\u003Cbr>\u003Cbr>280\u003Cbr>chartno1.htm (the file containing the e~~nt~~ire publication is 85 Mb, but s~~mall~~er files c~~o~~ntaining specific kinds of information ar~~e ~~also  available) . Here are a few basics:\u003Cbr>• The compass rose is a tool provided on all nautical charts to simplify the process of measuring directions. On the sample chart, the compass rose is near the upper center of the chart. The most commonly  used reference point for direction on nautical charts is Earth’s geographic north  pole (“true north”) .\u003Cbr>\u003Cbr>270\u003Cbr>260\u003Cbr>250\u003Cbr>240\u003Cbr>230\u003Cbr>• Depths on nautical charts are shown as many small numbers scattered over water areas. Depths indicated by these numbers are expressed in feet, fathoms (one | \u003Cbr>have the letter “R” nearby. | • Green buoys are printed in green with the letter “G” nearby.\u003Cbr>• A number in quotation marks is the number pain","cbCait6KbsX2v3Cu","https://ap.wps.com/l/cbCait6KbsX2v3Cu","pdf",9452980,6,"English","# What You Will Do\n# What You Will Need\n# How to Do It\n## Chart basics\n# Want to Do More?\n# Answers to the Chart Challenge","[{\"question\":\"Why are accurate nautical charts important for ocean navigation?\",\"answer\":\"The lesson uses the Vansittart wreck to show that uncharted hazards can cause ships to run aground and become unsafe. Accurate nautical charts and other navigational aids support safe travel in and out of ports and along the coastline.\"},{\"question\":\"What key elements on a nautical chart help with direction and navigation?\",\"answer\":\"The compass rose simplifies measuring directions, using true north as the reference point. Depths are shown as numbers over water areas, and symbols and abbreviations represent features such as buoys and lights.\"},{\"question\":\"How do chart challenge questions test coastal navigation skills?\",\"answer\":\"The questions require interpreting chart details to estimate water depth near markers, determine whether a vessel can pass under a bridge, identify features sticking up from the water, and check for obstacles on routes to marinas.\"}]","NOAA Nautical Chart Challenge - Coastal Navigation | PDF",1791901053]