{"id":461,"date":"2020-10-27T08:39:12","date_gmt":"2020-10-27T08:39:12","guid":{"rendered":"https:\/\/maritimesa.org\/nautical-science-grade-11\/?p=461"},"modified":"2020-10-27T08:58:05","modified_gmt":"2020-10-27T08:58:05","slug":"isolated-danger-marks","status":"publish","type":"post","link":"https:\/\/maritimesa.org\/nautical-science-grade-11\/2020\/10\/27\/isolated-danger-marks\/","title":{"rendered":"Isolated danger marks"},"content":{"rendered":"<div id=\"attachment_230\" style=\"width: 910px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-230\" class=\"wp-image-230 size-full\" src=\"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1.jpg\" alt=\"\" width=\"900\" height=\"396\" srcset=\"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1.jpg 900w, https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1-300x132.jpg 300w, https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1-768x338.jpg 768w, https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1-260x114.jpg 260w, https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1-50x22.jpg 50w, https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-content\/uploads\/sites\/6\/2020\/10\/11.2.3.6_fig_1-150x66.jpg 150w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><p id=\"caption-attachment-230\" class=\"wp-caption-text\">Isolated danger marks.<\/p><\/div>\n<p><strong>Purpose.<\/strong><br \/>\nIsolated danger marks are erected on or moored on or above isolated dangers of limited extent which have navigable water all round them. On Admiralty charts the position of the danger is the centre of the symbol or sounding indicating the danger.<\/p>\n<p><strong>Top mark.<\/strong><br \/>\nBlack double sphere top marks placed vertically above one another , are a very important feature of Isolated danger marks.<\/p>\n<p><strong>Colours.<\/strong><br \/>\nThe colours used for isolated danger marks are black with one or more red horizontal bands.<\/p>\n<p><strong>Shape.<\/strong><br \/>\nIn the case of a buoy a pillar or spar buoy is used.<\/p>\n<p><strong>Light.<\/strong><br \/>\nA white flashing light showing a group of two flashes is used to denote an isolated danger mark.<\/p>\n<p><strong>Retroreflectors.<\/strong><\/p>\n<p>One or more white bands, letters, numbers or symbols of retroreflective material are used for unlit isolated danger marks in the standard code. One or more pairs of blue above red bands are used in the comprehensive code.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Purpose. Isolated danger marks are erected on or moored on or above isolated dangers of limited extent which have navigable water all round them. On Admiralty charts the position of the danger is the centre of the symbol or sounding indicating the danger. Top mark. Black double sphere top marks [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[73,82,96],"tags":[],"class_list":["post-461","post","type-post","status-publish","format-standard","hentry","category-11-2-seamanship","category-11-2-3-system-of-buoyage","category-11-2-3-6-isolated-danger-marks"],"_links":{"self":[{"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/posts\/461"}],"collection":[{"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/comments?post=461"}],"version-history":[{"count":2,"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/posts\/461\/revisions"}],"predecessor-version":[{"id":473,"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/posts\/461\/revisions\/473"}],"wp:attachment":[{"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/media?parent=461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/categories?post=461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maritimesa.org\/nautical-science-grade-11\/wp-json\/wp\/v2\/tags?post=461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}