{"id":838,"date":"2015-03-30T16:38:42","date_gmt":"2015-03-30T20:38:42","guid":{"rendered":"http:\/\/www.boatsmartexam.com\/?post_type=article&#038;p=302"},"modified":"2020-04-02T12:48:20","modified_gmt":"2020-04-02T12:48:20","slug":"the-lateral-navigation-system","status":"publish","type":"article","link":"https:\/\/www.boatsmartexam.com\/knowledge-base\/article\/the-lateral-navigation-system\/","title":{"rendered":"The Lateral Navigation System"},"content":{"rendered":"<h2>The Lateral System<\/h2>\n<p>The Lateral Navigation System is used to mark the\u00a0most preferred and safest routes. Consisting of\u00a0red\u00a0and\u00a0green\u00a0buoys, this system marks the\u00a0course\u00a0of deepest water and indicates on which side of the buoy you should safely pass.<\/p>\n<p><a href=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/LatealSystemBuoysHeroScaled1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-303\" data-original=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/LatealSystemBuoysHeroScaled1-1024x576.jpg\" alt=\"Waterway marked with lateral system navigation aids\" width=\"700\" height=\"394\" \/><\/a><\/p>\n<p>In the Lateral Navigation System, buoys and beacons indicate the sides of the channel or route relative to a conventional direction of buoyage (usually upstream). They also mark junctions (a point where two channels meet) or bifurcations (the point where a channel divides). They can also mark a place where two tributaries meet.<\/p>\n<p>Keep in mind: When navigating along the course of a channel or fairway you should be as near to the outer limit of the channel or fairway on the starboard side as is safely possible.<\/p>\n<p><strong>There are two main types of Lateral System buoys which are most familiar to boaters and are standard for international waterways:<\/strong><\/p>\n<ul>\n<li>Green Port-hand Buoys<\/li>\n<li>Red Starboard-hand Buoys<\/li>\n<\/ul>\n<p><strong>In total, there are six types of lateral buoys including:<\/strong><\/p>\n<ul>\n<li>Port-Hand Buoys<\/li>\n<li>Starboard-Hand Buoys<\/li>\n<li>Port Bifurcation Buoys<\/li>\n<li>Starboard Bifurcation Buoys<\/li>\n<li>Fairway Buoys<\/li>\n<li>Isolated Danger Buoys<\/li>\n<\/ul>\n<h2>Port-Hand Buoys<\/h2>\n<p>Port-Hand Buoys are\u00a0green\u00a0in colour and mark the\u00a0left side of a channel\u00a0or the\u00a0location of a specific danger. Port-Hand Buoys must be kept on the\u00a0left-hand side\u00a0of your boat when heading upstream.<\/p>\n<p>Port-Hand Buoys are identified by letter(s) and odd-digit number(s), and in standard configuration, are flat on the top. In some instances, a Port-Hand Buoy may be fitted with a top-mark consisting of a single green cylinder.<\/p>\n<p><a href=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/PortBuoysOnWhite-01HeroScaled1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-304\" src=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/PortBuoysOnWhite-01HeroScaled1-1024x662.jpg\" alt=\"Lateral System Port Hand Buoys\" width=\"701\" height=\"453\" \/><\/a><\/p>\n<p>Port-Hand Buoys may also be fitted with a green light that flashes in either a:<\/p>\n<ul>\n<li>F1 pattern (single flashes in four second intervals); or<\/li>\n<li>Q pattern (quick, single flashes one second apart)<\/li>\n<\/ul>\n<h2>Starboard-Hand buoys<\/h2>\n<p>Starboard-Hand Buoys are\u00a0red\u00a0in colour and mark the\u00a0right side of a channel\u00a0or the location of a specific danger. Starboard-Hand Buoys must be kept on the\u00a0right-hand side\u00a0of your boat when heading upstream.<\/p>\n<p>Starboard-Hand Buoys are identified by letter(s) and even-digit number(s), and in standard configuration, are pointed on the top. If they do not have a red light they will be conical on the top.<\/p>\n<p><a href=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/StarboardBuoysOnWhite-01HeroScal1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-305\" src=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/StarboardBuoysOnWhite-01HeroScal1-1024x662.jpg\" alt=\"Lateral Sytem Starboard Hand Buoys\" width=\"701\" height=\"453\" \/><\/a><\/p>\n<p>Starboard-Hand Buoys may also be fitted with a red light that flashes in either a:<\/p>\n<ul>\n<li>F1 pattern (single flashes in four second intervals); or<\/li>\n<li>Q pattern (quick, single flashes one second apart)<\/li>\n<\/ul>\n<p><strong>Safe Boating Tip<\/strong><\/p>\n<p>Remember: Opposites attract when heading upstream using the lateral navigation system! Your boat\u2019s green sidelight will always match up with any red buoy that your boat approaches when heading upstream, and your red starboard sidelight will always pair with any green buoy that your boat approaches when heading upstream. Red\/green, green\/red!<\/p>\n<h2>Bifurcation Buoys<\/h2>\n<p>Part of the Lateral System, Bifurcation Buoys indicate the junction of two or more channels. You may pass on either side of these buoys when proceeding upstream but the preferred channel is indicated by the colour of the topmost band:<\/p>\n<p><a href=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/BifurcationBuoysHerobScaled1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-306\" src=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/BifurcationBuoysHerobScaled1-1024x793.jpg\" alt=\"Lateral System Bifurcation Buoys\" width=\"700\" height=\"542\" \/><\/a><\/p>\n<p><strong>Port-Junction <\/strong><strong>Bifurcation Buoy<\/strong><\/p>\n<p>Port-Junction Bifurcation Buoys are green in colour with a red horizontal band at the midsection. Port-Junction Buoys should be kept on the port (left) side of the vessel when navigating upstream.<\/p>\n<p><strong>Starboard-Junction<\/strong><strong>\u00a0Bifurcation Buoy<\/strong><\/p>\n<p>Starboard-Junction Bifurcation Buoys are red in colour with a green horizontal band at the midsection. Starboard-Junction Buoys should be kept on the starboard (right) side of the vessel when navigating upstream.<\/p>\n<h2>Fairway Buoys<\/h2>\n<p>Fairway Buoys are used to mark the\u00a0entrance\u00a0to a channel, the centre of a shipping channel or a safe approach to land. Operators should keep the Fairway Buoy on the left (port) side whether proceeding upstream or downstream.<\/p>\n<p><a href=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/fairwaybuoysHero1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-307\" src=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/fairwaybuoysHero1-1024x1024.jpg\" alt=\"Lateral System Fairway Buoys\" width=\"516\" height=\"516\" \/><\/a><\/p>\n<p><strong>Fairway Buoys are identified by the following:<\/strong><\/p>\n<ul>\n<li>Red and white in colour, divided vertically with one red side and one white side<\/li>\n<li>Will have a ball shaped top-mark<\/li>\n<li>May be equipped with a white light that flashes in a Mo(A) sequence\u2013one short flash, followed by one long flash repeated ten times per minute<\/li>\n<\/ul>\n<h2>Isolated Danger Buoys<\/h2>\n<p>An Isolated Danger Buoy is used to mark an\u00a0isolated hazard or obstruction\u00a0such as a rock, shoal or sunken island.\u00a0This buoy will be moored on, or above, an isolated danger that has navigable (i.e. safe) water all around it. You should refer to a marine\u00a0chart\u00a0to determine the features of the isolated danger (i.e. size, depth, exact location, etc.) and should navigate well clear of the marked danger.<\/p>\n<p><a href=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/IsolatedDangerBuoysHeroLrg1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-308\" src=\"\/wp-content\/uploads\/sites\/3\/2015\/03\/IsolatedDangerBuoysHeroLrg1-1024x793.jpg\" alt=\"Isolated Danger Buoys\" width=\"700\" height=\"542\" \/><\/a><\/p>\n<p><strong>Isolated Danger Buoys are identified by the following:<\/strong><\/p>\n<ul>\n<li>Black in colour with a wide red band at the midpoint<\/li>\n<li>A top-mark consisting of two black balls<\/li>\n<li>May be equipped with a white light that flashes in a FL(2) sequence\u2013a two flash sequence repeated every four seconds<\/li>\n<\/ul>\n","protected":false},"author":4,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","article-category":[12],"article-tag":[137,212],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v14.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The Lateral Navigation System and Buoy Types<\/title>\n<meta name=\"description\" content=\"A detailed look at the lateral navigation system, including descriptions and images of each type of buoy, and what information they indicate to boaters.\" \/>\n<meta name=\"robots\" content=\"index, follow\" \/>\n<meta name=\"googlebot\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta name=\"bingbot\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.boatsmartexam.com\/knowledge-base\/article\/the-lateral-navigation-system\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Lateral Navigation System and Buoy Types\" \/>\n<meta property=\"og:description\" content=\"A detailed look at the lateral navigation system, including descriptions and images of each type of buoy, and what information they indicate to boaters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.boatsmartexam.com\/knowledge-base\/article\/the-lateral-navigation-system\/\" \/>\n<meta property=\"og:site_name\" content=\"BOATsmart! 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