{"id":2073,"date":"2025-11-23T07:00:25","date_gmt":"2025-11-23T07:00:25","guid":{"rendered":"https:\/\/zhhmarinefender.com\/?p=2073"},"modified":"2025-11-23T07:21:13","modified_gmt":"2025-11-23T07:21:13","slug":"difference-between-gross-tonnage-and-net-tonnage","status":"publish","type":"post","link":"https:\/\/zhhmarinefender.com\/fr\/difference-between-gross-tonnage-and-net-tonnage\/","title":{"rendered":"Quelle est la diff\u00e9rence entre le tonnage brut et le tonnage net ?"},"content":{"rendered":"<p>Le tonnage est un indicateur essentiel de la taille d&#039;un navire, indiquant soit son volume, soit son poids. Le tonnage brut mesure le volume int\u00e9rieur total d&#039;un navire. Le tonnage net, quant \u00e0 lui, mesure l&#039;espace disponible pour le chargement. Cette distinction est cruciale pour les gestionnaires de chantiers navals et les propri\u00e9taires de ports, car elle influence le calcul des frais, les taxes et le respect des lois maritimes internationales.<\/p>\n<p>Chez Zhonghaihang Shipping Supply, nous avons constat\u00e9 l&#039;influence de ces indicateurs sur le secteur maritime. Nous analysons les diff\u00e9rences entre la jauge brute et la jauge nette, leurs m\u00e9thodes de calcul et leurs applications pratiques. Comprendre ces indicateurs aide les experts maritimes \u00e0 appr\u00e9hender les complexit\u00e9s du transport maritime et de la mesure.<\/p>\n<h2><strong><b>Comprendre les mesures du tonnage des navires<\/b><\/strong><\/h2>\n<p>Les mesures de tonnage sont essentielles dans le secteur maritime, car elles ont un impact sur la fiscalit\u00e9, la capacit\u00e9 de chargement, etc. Nous nous penchons sur le concept et l&#039;\u00e9volution historique des mesures de tonnage pour comprendre leur importance.<\/p>\n<h3><strong><b>Le concept de tonnage dans l&#039;industrie maritime<\/b><\/strong><\/h3>\n<p>Le tonnage mesure le volume ou le poids de la cargaison d&#039;un navire. Le terme \u00ab\u00a0tonnage\u00a0\u00bb vient du \u00ab\u00a0tun\u00a0\u00bb, un grand r\u00e9cipient \u00e0 vin autrefois utilis\u00e9 pour mesurer la capacit\u00e9 de chargement. Aujourd&#039;hui, le tonnage est essentiel au transport maritime, influen\u00e7ant la fiscalit\u00e9, la conformit\u00e9 r\u00e9glementaire et l&#039;efficacit\u00e9 op\u00e9rationnelle. Le syst\u00e8me de mesure a \u00e9volu\u00e9 pour tenir compte des diff\u00e9rents types de cargaisons et de navires, garantissant ainsi des calculs pr\u00e9cis de la capacit\u00e9 de gain et des capacit\u00e9s op\u00e9rationnelles d&#039;un navire.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-2064 size-full\" src=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-6.jpg\" alt=\"Comprendre les mesures du tonnage des navires\" width=\"768\" height=\"576\" srcset=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-6.jpg 768w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-6-300x225.jpg 300w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-6-16x12.jpg 16w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\n<h3><strong><b>D\u00e9veloppement historique de la mesure du tonnage<\/b><\/strong><\/h3>\n<p>L&#039;histoire du jaugeage est un voyage captivant, de la simple taxation aux normes internationales complexes. Initialement, le tonnage \u00e9tait bas\u00e9 sur le nombre de \u00ab\u00a0tonneaux\u00a0\u00bb qu&#039;un navire pouvait transporter. Le roi \u00c9douard Ier introduisit la premi\u00e8re taxe sur les navires bas\u00e9e sur le tonnage en 1303. Au fil du temps, le syst\u00e8me \u00e9volua, avec des \u00e9tapes importantes comme le Builder&#039;s Old Measurement (mesure de l&#039;ancien constructeur) d&#039;environ 1650 \u00e0 1849, et le syst\u00e8me bas\u00e9 sur le volume de George Moorsom en 1854. La n\u00e9cessit\u00e9 d&#039;un syst\u00e8me unifi\u00e9 conduisit \u00e0 la Convention internationale de l&#039;OMI sur le jaugeage des navires de 1969, \u00e9tablissant une norme mondiale.<\/p>\n<ul>\n<li>L\u2019\u00e9volution de la mesure du tonnage refl\u00e8te les changements dans le commerce et la technologie maritimes.<\/li>\n<li>Diff\u00e9rents syst\u00e8mes de mesure ont \u00e9t\u00e9 utilis\u00e9s historiquement, notamment la m\u00e9thode Builder&#039;s Old Measurement et la m\u00e9thode Moorsom.<\/li>\n<li>La normalisation internationale a assur\u00e9 la coh\u00e9rence des calculs de tonnage \u00e0 l\u2019\u00e9chelle mondiale.<\/li>\n<\/ul>\n<h2><strong><b>Explication du tonnage brut<\/b><\/strong><\/h2>\n<p>La jauge brute est un indicateur cl\u00e9 utilis\u00e9 par les autorit\u00e9s maritimes pour \u00e9tablir les normes de s\u00e9curit\u00e9, les exigences en mati\u00e8re d&#039;\u00e9quipage et les droits d&#039;immatriculation des navires. Elle constitue une mesure fondamentale dans le secteur maritime, influen\u00e7ant divers aspects de l&#039;exploitation des navires et de la conformit\u00e9 r\u00e9glementaire.<\/p>\n<p>La jauge brute (GT) est d\u00e9finie comme le volume int\u00e9rieur global d&#039;un navire, calcul\u00e9 selon des r\u00e8gles de jauge sp\u00e9cifiques. Elle sert de base \u00e0 la d\u00e9termination des r\u00e9glementations en mati\u00e8re d&#039;\u00e9quipage, de s\u00e9curit\u00e9 et de droits d&#039;immatriculation. L&#039;objectif principal de la jauge brute est de fournir une mesure normalis\u00e9e permettant d&#039;appliquer diverses exigences r\u00e9glementaires.<\/p>\n<h3><strong><b>Comment est calcul\u00e9 le tonnage brut<\/b><\/strong><\/h3>\n<p>Le calcul de la jauge brute consiste \u00e0 mesurer le volume de tous les espaces clos d&#039;un navire, y compris les cales \u00e0 marchandises, les citernes et les superstructures. Cette mesure est g\u00e9n\u00e9ralement effectu\u00e9e \u00e0 l&#039;aide d&#039;une formule qui prend en compte les dimensions du navire et le volume de ses espaces clos. Selon la r\u00e9glementation internationale, la jauge brute d&#039;un navire est calcul\u00e9e \u00e0 l&#039;aide d&#039;une formule sp\u00e9cifique qui prend en compte la profondeur, la largeur et la longueur hors tout du navire.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-2063 size-full\" src=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-5.jpg\" alt=\"Explication du tonnage brut\" width=\"768\" height=\"576\" srcset=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-5.jpg 768w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-5-300x225.jpg 300w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-5-16x12.jpg 16w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\n<h3><strong><b>Implications r\u00e9glementaires du tonnage brut<\/b><\/strong><\/h3>\n<p>La jauge brute joue un r\u00f4le essentiel dans la r\u00e9glementation maritime, influen\u00e7ant le respect des conventions SOLAS, MARPOL et MLC. Elle dicte les normes de s\u00e9curit\u00e9, notamment en mati\u00e8re d&#039;\u00e9quipements de sauvetage et de syst\u00e8mes de lutte contre l&#039;incendie. De plus, elle d\u00e9termine les exigences en mati\u00e8re d&#039;\u00e9quipage et les droits d&#039;immatriculation, en fonction des seuils fix\u00e9s par les autorit\u00e9s maritimes.<\/p>\n<p>Les armateurs et les exploitants de navires peuvent mieux naviguer dans le paysage r\u00e9glementaire maritime en comprenant le tonnage brut.<\/p>\n<h2><strong><b>Explication du tonnage net<\/b><\/strong><\/h2>\n<p>Le tonnage net mesure l&#039;espace utilisable d&#039;un navire et influence sa viabilit\u00e9 commerciale. Il affecte directement la capacit\u00e9 de chargement d&#039;un navire, ce qui le rend crucial pour \u00e9valuer son efficacit\u00e9 commerciale.<\/p>\n<p>Le tonnage net est le volume de chargement d&#039;un navire. Il ne prend en compte que l&#039;espace r\u00e9serv\u00e9 au chargement, ce qui le rend essentiel \u00e0 l&#039;\u00e9valuation de l&#039;efficacit\u00e9 commerciale. Il influence le potentiel de rentabilit\u00e9 d&#039;un navire, affectant ainsi ses co\u00fbts d&#039;exploitation et ses revenus.<\/p>\n<h3><strong><b>Comment le tonnage net est calcul\u00e9<\/b><\/strong><\/h3>\n<p>Le calcul du tonnage net consiste \u00e0 mesurer les espaces de chargement et \u00e0 appliquer une formule conforme \u00e0 la r\u00e9glementation internationale. Cette mesure est essentielle pour d\u00e9terminer la capacit\u00e9 r\u00e9elle d&#039;un navire. Les autorit\u00e9s des canaux, comme celles qui g\u00e8rent les canaux de Suez et de Panama, utilisent le tonnage net pour les frais de transit, reconnaissant ainsi son exactitude dans la mesure o\u00f9 il refl\u00e8te l&#039;utilisation commerciale.<\/p>\n<h3><strong><b>Importance commerciale du tonnage net<\/b><\/strong><\/h3>\n<p>Le tonnage net est une mesure essentielle du transport maritime, qui influence les co\u00fbts op\u00e9rationnels. Il est utilis\u00e9 pour calculer les frais et redevances, influer sur les co\u00fbts de voyage et planifier les itin\u00e9raires. Les contrats d&#039;affr\u00e8tement et de fret font souvent r\u00e9f\u00e9rence au tonnage net, fournissant ainsi une mesure standardis\u00e9e de la capacit\u00e9 de transport de marchandises.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-2062 size-full\" src=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-4.jpg\" alt=\"Importance commerciale du tonnage net\" width=\"768\" height=\"576\" srcset=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-4.jpg 768w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-4-300x225.jpg 300w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-4-16x12.jpg 16w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\n<h2><strong><b>Principales diff\u00e9rences entre le tonnage brut et le tonnage net<\/b><\/strong><\/h2>\n<p>Comprendre la diff\u00e9rence entre tonnage brut et tonnage net est essentiel pour les op\u00e9rations maritimes. Ces mesures ont des objectifs diff\u00e9rents et impactent diff\u00e9remment les armateurs, les exploitants et les organismes de r\u00e9glementation.<\/p>\n<h3><strong><b>Objectif de mesure\u00a0: volume par rapport \u00e0 espace utilisable<\/b><\/strong><\/h3>\n<p>La jauge brute mesure le volume int\u00e9rieur total d&#039;un navire, y compris les espaces non destin\u00e9s au fret. La jauge nette, quant \u00e0 elle, se concentre sur l&#039;espace utilisable pour le fret et les passagers. Cette diff\u00e9rence influence l&#039;\u00e9valuation et l&#039;utilisation commerciale des navires.<\/p>\n<h3><strong><b>Applications pratiques dans les op\u00e9rations maritimes<\/b><\/strong><\/h3>\n<p>La distinction entre tonnage brut et tonnage net a une incidence sur les op\u00e9rations maritimes. Les droits d&#039;immatriculation et les taxes annuelles de tonnage sont calcul\u00e9s sur le tonnage brut, refl\u00e9tant la taille et la complexit\u00e9 du navire. Le tonnage net, en revanche, d\u00e9termine l&#039;utilisation commerciale, influen\u00e7ant les taxes portuaires et les droits de passage dans les canaux. Les ports ont souvent recours \u00e0 une approche hybride, avec des taxes bas\u00e9es \u00e0 la fois sur le tonnage brut et le tonnage net.<\/p>\n<h3><strong><b>Impact sur les frais, les taxes et la r\u00e9glementation<\/b><\/strong><\/h3>\n<p>Les implications financi\u00e8res et r\u00e9glementaires du tonnage brut et net sont importantes. Les autorit\u00e9s du canal basent les tarifs de transit sur le tonnage net, reconnaissant ainsi son int\u00e9r\u00eat commercial. Les exigences r\u00e9glementaires augmentent \u00e0 partir de seuils sp\u00e9cifiques de tonnage brut, affectant les \u00e9quipements de s\u00e9curit\u00e9, la certification des \u00e9quipages et les normes structurelles. La taxe au tonnage, pr\u00e9lev\u00e9e aupr\u00e8s des compagnies maritimes, est calcul\u00e9e sur la valeur totale du tonnage, offrant ainsi un r\u00e9gime fiscal plus avantageux que l&#039;imp\u00f4t sur les soci\u00e9t\u00e9s classique.<\/p>\n<p>Les professionnels maritimes peuvent mieux naviguer dans le paysage complexe des frais, des taxes et des r\u00e9glementations en comprenant ces diff\u00e9rences.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2061 size-full\" src=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-3.jpg\" alt=\"Impact sur les frais, les taxes et la r\u00e9glementation\" width=\"768\" height=\"576\" srcset=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-3.jpg 768w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-3-300x225.jpg 300w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-3-16x12.jpg 16w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\n<h2><strong><b>Autres mesures de tonnage importantes dans le transport maritime<\/b><\/strong><\/h2>\n<p>Les indicateurs du secteur maritime vont au-del\u00e0 du tonnage brut et net. Ces mesures sont essentielles pour \u00e9valuer les capacit\u00e9s et l&#039;efficacit\u00e9 op\u00e9rationnelle d&#039;un navire. Elles garantissent \u00e9galement la conformit\u00e9 aux r\u00e9glementations internationales.<\/p>\n<ul>\n<li><b><\/b><strong><b>Tonnage de port en lourd<\/b><\/strong>Le tonnage de port en lourd (TPL) mesure la capacit\u00e9 de charge d&#039;un navire. Il comprend la cargaison, le carburant et les approvisionnements. Il est essentiel pour d\u00e9terminer la viabilit\u00e9 commerciale et les limites op\u00e9rationnelles d&#039;un navire. Le TPL se calcule en soustrayant le poids du navire \u00e0 vide de son poids total \u00e0 pleine charge.<\/li>\n<li><b><\/b><strong><b>D\u00e9placement Tonnage<\/b><\/strong>Le tonnage de d\u00e9placement correspond au poids r\u00e9el d&#039;un navire. Il est calcul\u00e9 en mesurant le volume d&#039;eau d\u00e9plac\u00e9 par le navire. Cette mesure est essentielle pour les architectes et ing\u00e9nieurs navals afin d&#039;\u00e9valuer la stabilit\u00e9 et les performances.<\/li>\n<li><b><\/b><strong><b>Exigences relatives aux certificats de tonnage internationaux<\/b><\/strong>Le certificat international de jaugeage (ITC) est obligatoire pour les voyages internationaux. Il est d\u00e9livr\u00e9 en vertu de la Convention internationale de 1969 sur le jaugeage des navires. Ce certificat, d\u00e9livr\u00e9 par l&#039;\u00c9tat du pavillon ou les soci\u00e9t\u00e9s de classification, confirme la jauge brute et nette du navire.<\/li>\n<\/ul>\n<h3><strong><b>Contenu principal de l&#039;ITC<\/b><\/strong><\/h3>\n<ul>\n<li>L&#039;ITC sert de documentation officielle du tonnage brut et net d&#039;un navire.<\/li>\n<li>Le certificat est d\u00e9livr\u00e9 apr\u00e8s des \u00e9tudes et des calculs d\u00e9taill\u00e9s, selon des formules internationales standardis\u00e9es.<\/li>\n<li>Bien que le certificat n&#039;ait pas de date d&#039;expiration, il doit \u00eatre r\u00e9\u00e9mis si des modifications affectent les mesures de tonnage du navire.<\/li>\n<li>La conformit\u00e9 aux exigences de l\u2019ITC est v\u00e9rifi\u00e9e lors des inspections de contr\u00f4le par l\u2019\u00c9tat du port.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2060 size-full\" src=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-2.jpg\" alt=\"Autres mesures de tonnage importantes dans le transport maritime\" width=\"768\" height=\"576\" srcset=\"https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-2.jpg 768w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-2-300x225.jpg 300w, https:\/\/zhhmarinefender.com\/wp-content\/uploads\/2025\/07\/Berthing-in-Shipping-2-16x12.jpg 16w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\n<h2><strong><b>Conclusion<\/b><\/strong><\/h2>\n<p>Une mesure pr\u00e9cise du tonnage est essentielle \u00e0 la conformit\u00e9 et \u00e0 l&#039;efficacit\u00e9 op\u00e9rationnelle. Ces mesures ont une incidence sur l&#039;exploitation des navires, les co\u00fbts et la conformit\u00e9 r\u00e9glementaire. Gr\u00e2ce \u00e0 une compr\u00e9hension approfondie des mesures de tonnage, les gestionnaires de chantiers navals et les propri\u00e9taires de ports peuvent prendre des d\u00e9cisions \u00e9clair\u00e9es.<\/p>\n<p>En tant que professionnel\u00a0<a href=\"https:\/\/zhhmarinefender.com\/fr\/\" target=\"_blank\" rel=\"noopener\"><u>\u00e9quipement marin<\/u><\/a>\u00a0Fabricant, Zhonghaihang Shipping Supply propose des solutions de protection professionnelles. Parmi celles-ci, <a href=\"https:\/\/zhhmarinefender.com\/fr\/pneumatic-fenders\/\" target=\"_blank\" rel=\"noopener\"><strong><u><b>d\u00e9fenses pneumatiques<\/b><\/u><\/strong><\/a>\u00a0et <a href=\"https:\/\/zhhmarinefender.com\/fr\/marine-airbags\/\" target=\"_blank\" rel=\"noopener\"><strong><u><b>airbags marins<\/b><\/u><\/strong><\/a>\u00a0pour assurer la s\u00e9curit\u00e9 et l&#039;efficacit\u00e9.<\/p>\n<h2><strong><b>FAQ<\/b><\/strong><\/h2>\n<h3><strong><b>Quelle est la diff\u00e9rence entre le tonnage brut et le tonnage net ?<\/b><\/strong><\/h3>\n<p>La jauge brute mesure le volume total des espaces clos d&#039;un navire. La jauge nette, quant \u00e0 elle, mesure la capacit\u00e9 de chargement du navire, hors espaces non g\u00e9n\u00e9rateurs de revenus.<\/p>\n<h3><strong><b>Comment est calcul\u00e9 le tonnage de d\u00e9placement ?<\/b><\/strong><\/h3>\n<p>Le tonnage de d\u00e9placement est calcul\u00e9 en mesurant le poids de l&#039;eau d\u00e9plac\u00e9e par un navire lorsqu&#039;il flotte. Cela \u00e9quivaut au poids r\u00e9el du navire.<\/p>\n<h3><strong><b>\u00c0 quoi sert le tonnage de port en lourd ?<\/b><\/strong><\/h3>\n<p>Le tonnage \u00e0 vide mesure la capacit\u00e9 de charge d&#039;un navire, incluant la cargaison, le carburant et l&#039;\u00e9quipage. Il permet de d\u00e9terminer la charge maximale qu&#039;un navire peut transporter en toute s\u00e9curit\u00e9.<\/p>\n<h3><strong><b>Pourquoi la mesure du tonnage est-elle importante dans le transport maritime ?<\/b><\/strong><\/h3>\n<p>La mesure du tonnage est essentielle pour d\u00e9terminer la capacit\u00e9 d&#039;un navire, les frais, les taxes et la conformit\u00e9 r\u00e9glementaire. Elle garantit la s\u00e9curit\u00e9 et l&#039;efficacit\u00e9 des op\u00e9rations maritimes.<\/p>\n<h3><strong><b>Quel est l\u2019impact du tonnage net sur les op\u00e9rations commerciales ?<\/b><\/strong><\/h3>\n<p>Le tonnage net influence directement la capacit\u00e9 de g\u00e9n\u00e9ration de revenus d&#039;un navire. Il mesure le volume des espaces de chargement, influen\u00e7ant ainsi les d\u00e9cisions commerciales et la rentabilit\u00e9.<\/p>\n<h3><strong><b>Qu\u2019est-ce que le certificat international de jaugeage et pourquoi est-il requis ?<\/b><\/strong><\/h3>\n<p>Le certificat international de jauge est un document attestant du tonnage d&#039;un navire. Il est exig\u00e9 par la r\u00e9glementation internationale pour garantir le respect des normes de s\u00e9curit\u00e9 et d&#039;exploitation.<\/p>","protected":false},"excerpt":{"rendered":"<p>Tonnage is a critical indicator of a ship&#8217;s\u00a0size, showing either its volume or weight. Gross tonnage\u00a0gauges the total internal volume [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2074,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is the Difference Between Gross Tonnage and Net Tonnage? - Zhonghaihang Shipping Supply<\/title>\n<meta name=\"description\" content=\"Gross tonnage\u00a0gauges the total internal volume of a vessel. 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