{"id":1055,"date":"2021-06-01T12:12:13","date_gmt":"2021-06-01T11:12:13","guid":{"rendered":"https:\/\/www.logistics.ie\/portal\/?p=1055"},"modified":"2021-07-31T13:55:01","modified_gmt":"2021-07-31T12:55:01","slug":"why-megaships-became-so-big","status":"publish","type":"post","link":"https:\/\/www.logistics.ie\/portal\/why-megaships-became-so-big\/","title":{"rendered":"Why Megaships Like <em>Ever Given<\/em> Became So Huge"},"content":{"rendered":"<p>The six-day blockage of the Suez Canal by a megaship named <em>Ever Given<\/em> came to an end on March 29 after <a href=\"https:\/\/theconversation.com\/suez-canal-blockage-what-it-takes-to-unwedge-a-megaship-158006\" target=\"_blank\" rel=\"noopener\">salvage teams<\/a> used dredging and tug boats to heave the vessel back into operation.<\/p>\n<p>The capacity of a single vessel to block one of the world\u2019s busiest <a href=\"https:\/\/theconversation.com\/suez-canal-container-ship-accident-is-a-worst-case-scenario-for-global-trade-157802\" target=\"_blank\" rel=\"noopener\">shipping corridors<\/a>, creating a traffic jam of hundreds of boats, has sparked a debate about the ever-growing size of megaships, with the Ever Given\u2019s accident taken as evidence that they\u2019ve simply become too large.<\/p>\n<p>At 400 metres long, the Ever Given is indeed among <a href=\"https:\/\/www.agcs.allianz.com\/news-and-insights\/expert-risk-articles\/suez-canal-mega-ships.html\" target=\"_blank\" rel=\"noopener\">the largest 1%<\/a> of the world\u2019s fleet. Its high-profile accident will result in a new wave of precautions to make megaships safer, but it will also prompt the shipping industry to reflect on whether such gigantic vessels actually do more harm than good.<\/p>\n<p>&nbsp;<\/p>\n<h2>Bigger Ships<\/h2>\n<p>Container ships have been increasing in size for decades in order to carry more containers on each voyage. According to <a href=\"https:\/\/www.agcs.allianz.com\/news-and-insights\/expert-risk-articles\/suez-canal-mega-ships.html\">analysis from Allianz<\/a>, the number of 20-foot containers that ships can carry has increased by 1,500% over the past 50 years.<\/p>\n<p>One of the most significant size upgrades came when Maersk introduced its E-series in 2006, which can carry around 15,000 containers \u2013 doubling the capacity of the previous largest container ships.<\/p>\n<p>In the 15 years since then, some <a href=\"https:\/\/www.nytimes.com\/2021\/03\/30\/business\/economy\/container-ships-suez-canal.html\">133 ships<\/a> have been launched with a carrying capacity of between 18,000 and 24,000 containers. These are classed as ultra large container vessels \u2013 the biggest boats in the world. The Ever Given is one such vessel.<\/p>\n<p class=\"align-center zoomable\" style=\"text-align: center;\"><a href=\"https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"auto, (min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" srcset=\"https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=333&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=333&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=333&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=419&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=419&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/392275\/original\/file-20210329-17-1xxbidj.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=419&amp;fit=crop&amp;dpr=3 2262w\" alt=\"A graph showing the increased carry capacity of container ships increasing between 2000 and 2020\" width=\"753\" height=\"418\" \/><\/a><span class=\"caption\">TEU stands for \u2018twenty-foot equivalent units\u2019 \u2013 the standard size of a single shipping container.<\/span><\/p>\n<p><span class=\"attribution\"><span class=\"license\">\u00a0<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<h2>Economies of Scale<\/h2>\n<p>Megaships are particularly attractive for international shipping firms because they offer <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0308597X21000105?via%3Dihub\" target=\"_blank\" rel=\"noopener\">economies of scale<\/a>: the larger the ship, the more efficient it is at transporting goods.<\/p>\n<p>The Ever Given can carry 20,000 containers, while so-called <a href=\"https:\/\/www.globalsecurity.org\/military\/systems\/ship\/container-types.htm\" target=\"_blank\" rel=\"noopener\">very large containerships<\/a> can carry a maximum of just 9,000 containers. Using just one vessel instead of two to carry the same load saves fuel, significantly reduces the cost of transportation per container, and reduces the ship\u2019s environmental footprint.<\/p>\n<p>When megaships were first introduced, there were doubts about whether they\u2019d actually use their huge carrying capacity. But evidence suggests they do: the Ever Given was reportedly carrying more than <a href=\"https:\/\/gulfnews.com\/world\/mena\/egypt-president-al-sissi-orders-operation-to-lift-containers-from-stricken-ever-given-1.78170544\" target=\"_blank\" rel=\"noopener\">18,000 containers<\/a> when it became wedged in the Suez Canal.<\/p>\n<p>Unfortunately, carrying this many containers also has its downsides.<\/p>\n<p>&nbsp;<\/p>\n<h2>Megaship downsides<\/h2>\n<p>Operating megaships in confined waterways has already been shown to be <a href=\"https:\/\/www.researchgate.net\/publication\/317914034_Simulation_of_a_Ship_Propulsion_System_Performance_during_Manoeuvring_in_Shallow_Waters\">difficult<\/a>. Stacking them high with containers doesn\u2019t help: it can lead the vessels to catch the wind and become even harder to control, which may have played a role in the Ever Given\u2019s grounding.<\/p>\n<p>&nbsp;<\/p>\n<figure class=\"align-center \">\n<div style=\"width: 610px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"auto, (min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" srcset=\"https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/392890\/original\/file-20210331-17-1p9wtmp.jpeg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=3 2262w\" alt=\"Megaships\" width=\"600\" height=\"400\" \/><p class=\"wp-caption-text\">Source: Suez Canal Authority<\/p><\/div><figcaption><\/figcaption><\/figure>\n<p>When caught in a storm on open seas, such ships may also be more prone to losing containers overboard. According to <a href=\"https:\/\/panjiva.com\/research\/ground-wind-and-fire-the-perils-of-global-supply-chains\/40071\" target=\"_blank\" rel=\"noopener\">recent analysis<\/a>, at least five of the largest class of container ship lost containers during this year\u2019s winter storm season in the Pacific.<\/p>\n<p>Infrastructure is also struggling to cope with these larger ships. According to a <a href=\"https:\/\/www.itf-oecd.org\/impact-mega-ships\" target=\"_blank\" rel=\"noopener\">2015 report<\/a>, ports, straits and canals require expansion to make way for the new class of megaships.<\/p>\n<p>The cost of such projects is immense: the <a href=\"https:\/\/www.nytimes.com\/interactive\/2016\/06\/22\/world\/americas\/panama-canal.html\" target=\"_blank\" rel=\"noopener\">expansion of the Panama Canal in 2016<\/a> to accommodate bigger ships ended up costing over $5 billion (\u00a33.6 billion). In light of these infrastructural concerns, there may be an economic argument against expanding the number or size of megaships in our seas.<\/p>\n<p>&nbsp;<\/p>\n<h2>Is the Size of Megaships to Blame?<\/h2>\n<p>An investigation is ongoing into the cause of the Ever Given\u2019s accident, which should tell us to what extent her size was responsible. Based on previous incidents, strong winds, malfunctioning machinery and even human error could equally be to blame.<\/p>\n<p>My research at the <a href=\"https:\/\/www.strath.ac.uk\/research\/maritimesafetyresearchcentre\/\" target=\"_blank\" rel=\"noopener\">Maritime Safety Research Centre<\/a> studies incidents such as this one, trying to understand the <a href=\"https:\/\/ieeexplore.ieee.org\/document\/9116937\" target=\"_blank\" rel=\"noopener\">hazards and risks<\/a> that may contribute to maritime accidents. When operational vessels run into trouble, we can learn from them to <a href=\"https:\/\/www.mdpi.com\/2313-576X\/6\/3\/39\" target=\"_blank\" rel=\"noopener\">avoid accidents happening again<\/a>.<\/p>\n<p>If the Ever Given\u2019s size was to blame for its accident, you\u2019d expect other megaships, which have been transiting the Suez Canal for years, to have experienced similar difficulties. But a quick check of accident statistics shows that there are only two or three similar incidents involving megaships in the canal per year \u2013 out of <a href=\"https:\/\/www.suezcanal.gov.eg\/English\/Navigation\/Pages\/NavigationStatistics.aspx\" target=\"_blank\" rel=\"noopener\">19,000 annual crossings<\/a>.<\/p>\n<p>In most cases, these are minor accidents causing little disruption, and they occur at such a low frequency that the Ever Given\u2019s accident should not be interpreted as evidence that container ships have become too big.<\/p>\n<p>But seeing as the consequences of the Ever Given\u2019s accident were so severe, new maritime safety measures will rightly be put in place to avoid a similar incident happening in the future, such as ship design changes, better pilot training, the use of tug boats as canal escorts, <a href=\"https:\/\/www.researchgate.net\/publication\/342833933_Paving_the_way_towards_autonomous_shipping_development_for_European_Waters_-_The_AUTOSHIP_project\" target=\"_blank\" rel=\"noopener\">autonomous guidance systems<\/a>, and the widening of waterways.<\/p>\n<p>Regardless of new safety measures, the Ever Given\u2019s accident may well come to be regarded as a \u201cblack swan\u201d event: an unpredictable one-off, rather than a sign of things to come. At present, there\u2019s little evidence to suggest that container ships have become too big, or that the downsides of such megaships should result in their being scrapped.<\/p>\n<p>&nbsp;<\/p>\n<p><!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img loading=\"lazy\" decoding=\"async\" style=\"border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important;\" src=\"https:\/\/counter.theconversation.com\/content\/158090\/count.gif?distributor=republish-lightbox-basic\" alt=\"The Conversation\" width=\"1\" height=\"1\" \/><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --><\/p>\n<p>Evangelos Boulougouris is Professor of Naval Architecture, Ocean and Marine Engineering at the University of Strathclyde<\/p>\n<p>This article is republished from <a href=\"https:\/\/theconversation.com\" target=\"_blank\" rel=\"noopener\">The Conversation<\/a> under a Creative Commons license.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The growth in the size of megaships is driven by a number of efficiencies but there are also difficulties, such as the recent Suez Canal blockage, that may indicate a limit is nearby.<\/p>\n","protected":false},"author":5,"featured_media":1056,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"yes","footnotes":"","tve_updated_post":"","tve_custom_css":"","tve_user_custom_css":"","tve_globals":{},"tcb2_ready":0,"tcb_editor_enabled":0,"tve_landing_page":"","_tve_header":"","_tve_footer":""},"categories":[5],"tags":[9,7,6],"class_list":["post-1055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shipping","tag-cargo","tag-container","tag-shipping"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Megaships Like Ever Given Became So Huge - Logistics Ireland<\/title>\n<meta name=\"description\" content=\"The growth in the size of megaships is driven by a number of efficiencies but there are also difficulties that 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