{"id":27995,"date":"2024-03-26T09:13:17","date_gmt":"2024-03-26T09:13:17","guid":{"rendered":"https:\/\/tecnimusa.es\/?p=27995"},"modified":"2025-04-10T12:30:16","modified_gmt":"2025-04-10T12:30:16","slug":"isaac-peral-and-the-first-submarine-powered-by-an-electric-motor","status":"publish","type":"post","link":"https:\/\/tecnimusa.es\/en\/isaac-peral-and-the-first-submarine-powered-by-an-electric-motor\/","title":{"rendered":"ISAAC PERAL AND THE FIRST SUBMARINE POWERED BY AN ELECTRIC MOTOR"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"27995\" class=\"elementor elementor-27995 elementor-27994\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d4c8872 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d4c8872\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;pix_scale_in&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-35466560\" data-id=\"35466560\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;pix_scale_in&quot;:&quot;none&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2d55d0e3 elementor-widget elementor-widget-text-editor\" data-id=\"2d55d0e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span data-contrast=\"auto\">One afternoon in 1888 a steel beast plunged for the first time into the depths of the sea, in one of the largest military centers in Spain. It carried on board 11 men and its creator, the genius Isaac Peral. That day was the launching of the <\/span><b><span data-contrast=\"auto\">first naval submarine with electric propulsion<\/span><\/b><span data-contrast=\"auto\">, a prototype that revolutionized the navy of the great powers and was decisive in both World Wars.\u00a0\u00a0<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:200,&quot;335559739&quot;:200,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p><p data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">Peral was a wise and brave Spanish officer who conquered the secrets of the sea. He built a <\/span><b><span data-contrast=\"auto\">modern submersible vessel powered by 2 electric motors <\/span><\/b><span data-contrast=\"auto\">powered by a battery of 613 accumulators.\u00a0<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:200,&quot;335559739&quot;:200,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/p><ul><li data-leveltext=\"\u25cf\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u25cf&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">It sailed with precision, power and safety.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:200,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-leveltext=\"\u25cf\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u25cf&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">It fired torpedoes right on target.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-leveltext=\"\u25cf\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u25cf&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">It reached up to 10 hours of continuous immersion.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-leveltext=\"\u25cf\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u25cf&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">She had a range of 130 miles at 6 knots and 396 miles at 3 knots.\u00a0<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-leveltext=\"\u25cf\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u25cf&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">It submerged without leaving the slightest trace on the surface of the water.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><\/ul><p data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">\ud83e\udd47This <\/span><b><span data-contrast=\"auto\">torpedo submarine, <\/span><\/b><span data-contrast=\"auto\">created for coastal defense, could dive horizontally at the desired elevation, thanks to a novel top-secret system that Peral&#8217;s creative mind called &#8220;<\/span><b><span data-contrast=\"auto\">depth apparatus<\/span><\/b><span data-contrast=\"auto\">&#8220;. It was a huge steel hull equipped with several revolutionary technologies, such as:<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:200,&quot;335559739&quot;:200,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/p><p data-ccp-border-bottom=\"0px none #000000\" data-ccp-padding-bottom=\"0px\" data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">A compressed air system for breathing and a purifier to eliminate carbon dioxide.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:708,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/p><ul><li data-ccp-border-bottom=\"0px none #000000\" data-ccp-padding-bottom=\"0px\" data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">A cooling system, which prevented the submarine from heating up.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:708,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-ccp-border-bottom=\"0px none #000000\" data-ccp-padding-bottom=\"0px\" data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">An optical tower (precursor of the periscope), to project the external image onto an optical table inside the ship.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:708,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-ccp-border-bottom=\"0px none #000000\" data-ccp-padding-bottom=\"0px\" data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">A system of magnetic compensation of the compass, which facilitated navigation.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:708,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><li data-ccp-border-between=\"0px none #000000\" data-ccp-padding-between=\"0px\"><span data-contrast=\"auto\">A torpedo launcher tube, with an arsenal of three missiles.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:708,&quot;335559740&quot;:240,&quot;335572071&quot;:0,&quot;335572072&quot;:0,&quot;335572073&quot;:0,&quot;335572075&quot;:0,&quot;335572076&quot;:0,&quot;335572077&quot;:0,&quot;335572079&quot;:0,&quot;335572080&quot;:0,&quot;335572081&quot;:0,&quot;335572083&quot;:0,&quot;335572084&quot;:0,&quot;335572085&quot;:0,&quot;335572087&quot;:0,&quot;335572088&quot;:0,&quot;335572089&quot;:0,&quot;469789798&quot;:&quot;nil&quot;,&quot;469789802&quot;:&quot;nil&quot;,&quot;469789806&quot;:&quot;nil&quot;,&quot;469789810&quot;:&quot;nil&quot;,&quot;469789814&quot;:&quot;nil&quot;}\">\u00a0<\/span><\/li><\/ul><p><span data-contrast=\"auto\">The reliability and performance of Peral&#8217;s submarine were proven under demanding tests. And although this technological marvel was not taken advantage of in its homeland, <\/span><b><span data-contrast=\"auto\">Spanish engineering took a bold step into the future and illuminated the world&#8217;s naval history<\/span><\/b><span data-contrast=\"auto\">. A legacy that endures through time.<\/span><span data-ccp-props=\"{&quot;134245417&quot;:false,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p><h4>In TECNIMUSA we design cutting-edge technological solutions that sustainably develop the industrial sector. We are an engineering company that fuses knowledge, innovation and eco-efficiency.\u00a0<\/h4><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7a6f4dd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7a6f4dd\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;pix_scale_in&quot;:&quot;none&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6dec94d\" data-id=\"6dec94d\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;pix_scale_in&quot;:&quot;none&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0ca28dc elementor-align-center elementor-widget elementor-widget-button\" data-id=\"0ca28dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/tecnimusa.es\/en\/contact\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>One afternoon in 1888 a steel beast plunged for the first time into the depths of the sea, in one of the largest military centers in Spain. It carried on board 11 men and its creator, the genius Isaac Peral&#8230;.<\/p>\n","protected":false},"author":2,"featured_media":27992,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"page_builder":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-27995","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ISAAC PERAL AND THE FIRST SUBMARINE POWERED BY AN ELECTRIC MOTOR - Tecnimusa<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tecnimusa.es\/en\/isaac-peral-and-the-first-submarine-powered-by-an-electric-motor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ISAAC PERAL AND THE FIRST SUBMARINE POWERED BY AN ELECTRIC MOTOR\" \/>\n<meta property=\"og:description\" content=\"One afternoon in 1888 a steel beast plunged for the first time into the depths of the sea, in one of the largest military centers in Spain. 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