{"organism":"Page","children":[{"organism":"Container.Raw","children":[{"organism":"Metadata","color":"brand1-solid","model":{"title":"High Sulphur Fuel Oil","text":"\u003Cp\u003ELower fuel costs without compromising quality\u003C/p\u003E\r\n\r\n\r\n\r\n\r\n","links":[{"name":"High Sulphur Fuel Oil","value":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700.html"}],"image":{"src":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/metadata.shellimg.jpeg/1652866228228/rmk-500700.jpeg","alt":"High Sulphur Fuel Oil","width":1900,"height":1200}},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/metadata"},{"organism":"ContentOwner","color":"brand1-solid","model":{},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/contentowner"},{"organism":"Container.Header","children":[{"organism":"Container.Raw","ref":"https://www.shell.com/_jcr_content/root/header/inherited.model.json","id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/header/inherited","model":{}},{"organism":"Breadcrumb","model":{"links":[{"name":"Home","value":"https://www.shell.com/"},{"name":"Business customers","value":"https://www.shell.com/business-customers.html"},{"name":"Shell Marine","value":"https://www.shell.com/business-customers/marine.html"},{"name":"Marine fuels","value":"https://www.shell.com/business-customers/marine/fuel.html"},{"name":"High Sulphur Fuel Oil","value":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700.html"}]},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/header/breadcrumb"}],"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/header","model":{}},{"organism":"Container.Main","children":[{"organism":"Container.Section","children":[{"organism":"PageHeader","color":"brand2","model":{"title":"High Sulphur Fuel Oil","text":"\u003Cp\u003ENext to various grades of RMG and RME, Shell is offering RMK 500 and RMK 700. This provides our customers with a lower fuel cost, without compromising on quality!\u003C/p\u003E\r\n\r\n\r\n","image":{"src":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/main/containersection-0/item.shellimg.jpeg/1647518826257/rmk-500700.jpeg","alt":"rmk-500700","width":1900,"height":1200}},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/containersection-0/item"},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/containersection-0/text","model":{"text":"\u003Ch4\u003EWhat’s different with the RMK’s and the RMG 380?\u003C/h4\u003E\r\n\u003Cp\u003ERMK 500 & 700 fuels are made from the same basic components as lower viscosity fuels, with cutters (such as cycle oils, gas oil, etc) being used in varying proportions to achieve the required viscosity and density of the fuel grade. Optimising the fuel blend in this way has no significant impact on fuel performance for those vessels that are equipped to consume it, but has one major advantage: it is cheaper to produce and therefore a more cost-effective energy source for the vessel operator.\u003C/p\u003E\r\n\u003Ch4\u003E\u003Cbr\u003E\r\nThe benefits of Shell RMK’s:\u003C/h4\u003E\r\n\u003Cp\u003EIn the 60 years since Shell pioneered the use of residual fuels for diesel engines in its fleet, the shipping industry has benefited from the use of this cost-effective energy source. Developments in fuel treatment and engine technology have enabled the industry to progressively make use of more cost-competitive grades, with typical fuel viscosities increasing from 180cSt to 380cSt, and to 500 and 700cSt.\u003C/p\u003E\r\n\u003Cp\u003EHigh-density 500/700cSt fuel oil is a well established and proven marine bunker fuel, suitable for use in large modern vessels with low-speed diesel engines. It is more cost competitive than 380cSt fuel, and therefore offers operators comparable performance at lower cost.\u003C/p\u003E\r\n\u003Cp\u003E \u003C/p\u003E\r\n\u003Ch4\u003EWhat are the operational considerations for the use of Shell RMK’s ?\u003C/h4\u003E\r\n\u003Cp\u003ECompared with conventional RMG 380 fuel, RMK 500/700 has both a higher viscosity and a higher density, but this has no practical impact. Alcap type centrifugal separators used for fuel cleaning can deal with fuel densities of up to 1010 kg/m3 @ 15°C. The higher fuel viscosity requires a slightly higher storage and handling temperature (typically 4-6°C).\u003C/p\u003E\r\n\u003Cp\u003EVessels burning RMK 500/700 needs sufficient heating capacity to maintain these slightly elevated temperatures, but the heat required can usually be provided by the waste heat boiler of the vessel, and most of the heat put into the fuel is recovered in the engine.\u003C/p\u003E\r\n\u003Cp\u003E \u003C/p\u003E\r\n\u003Ch4\u003EWhy Shell RMK 500/700?\u003C/h4\u003E\r\n\u003Cp\u003EShell has been supplying high density, high viscosity fuels into the marine market for over 20 years, in which time we have supplied tens of millions of tons of Shell’s RMK 500/700 to our customers. Over that time we have built up vast experience in the production, blending and handling of these fuels, and of their satisfactory performance in our customers’ vessels.\u003C/p\u003E\r\n\u003Cp\u003EShell’s RMK 500/700 is tightly controlled through our Fuel Oil Quality Assurance System (FOQAS), to ensure compliance with Shell’s global standards (which\u003Cbr\u003E\r\ninclude several internal specifications that are more stringent than the full ISO 8217 (2010) specification). These standards are rigorously applied to assure customers of the high degree of confidence they require that the fuels they buy will be on specification and will burn efficiently in their engine.\u003C/p\u003E\r\n\u003Cp\u003EShell RMK 500/700 complies with the ISO 8217 (2010) specification for RMK 380 in every respect with the exception, obviously, of viscosity.\u003C/p\u003E\r\n\u003Cp\u003E \u003C/p\u003E\r\n\u003Ch4\u003EShell RMK 500/700 Combustion Properties\u003C/h4\u003E\r\n\u003Cp\u003EWhilst the composition of Shell RMK 500/700 is very similar to that of other fuels such as RMG 380, it is critical that suppliers selling higher viscosity fuels understand the impact that changes in fuel formulation can have on the performance of the fuel. Meeting the bulk properties set out in the ISO spec is not always sufficient to ensure good performance in the engine.\u003C/p\u003E\r\n\u003Cp\u003EThis is why Shell continues to compliment our long experience of how to blend good quality fuels with an ongoing Marine Fuels Research and Development Program, in our Group research laboratories in Amsterdam and our dedicated Marine research facility in Hamburg. This includes extensive monitoring of the ignition and combustion properties of our fuels in our test engines and Fuel Ignition Analysis (FIA) equipment.\u003C/p\u003E\r\n\u003Cp\u003E \u003C/p\u003E\r\n\u003Ch4\u003ENo greater risks to stability and compatibility\u003C/h4\u003E\r\n\u003Cp\u003EWhen mixing residual fuels of different qualities or from different sources there is the potential for stability and compatibility issues to arise, as a lower aromatic content may increase the risk of asphaltene precipitation leading to sludge formation. However, as a result of the high aromaticity of Shell RMK 500 there is no increased stability or compatibility risk when mixing Shell RMK 500 and RMG 380.\u003C/p\u003E\r\n"}},{"organism":"PromoSimple.Text","color":"brand2-subtle","id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/containersection-0/section_header_1330135580","model":{"text":"\u003Ch2\u003EAre you taking full advantage of this cost effective quality fuel oil?\u003C/h2\u003E"}},{"organism":"WebComponent","color":"inherited","model":{"links":[{"value":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/main/containersection-0/web_component.stream/1775627473174/ec8de25d4c56e3e248e373391259624c2d5c6feb/standalone-table.js"},{"name":"src","value":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/main/containersection-0/web_component/links/src.stream/1669112351169/d0bde662b454a1a3970d48ceb0549046fa838dbf/rmk.xlsx"}]},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/containersection-0/web_component"}],"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/containersection-0","model":{}},{"organism":"Container.Section","color":"brand2-subtle","children":[{"organism":"PromoCard","color":"brand2","colspan":4,"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/section/promo_copy","model":{"title":"Global Marine Fuels Network","text":"\u003Cp\u003EFind out where we supply our bunker fuels, such as High Sulphur Fuel Oil, Ultra-Low Sulphur Fuel Oil, Very Low Sulfur Fuel Oil, DMA/MGO and LNG Fuel.\u003C/p\u003E\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n","links":[{"name":"Global Marine Fuels Network","value":"https://www.shell.com/business-customers/marine/fuel/marine-network.html"}],"image":{"src":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/main/section/promo_copy.shellimg.jpeg/1669112436475/marine-fuel-network.jpeg","alt":"ship","width":1896,"height":1068}}},{"organism":"PromoCard","color":"brand2","colspan":4,"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/section/promo_copy_copy","model":{"title":"Marine Safety Data Sheets","text":"\u003Cp\u003ESafety data sheets (SDS) describe the hazards of substances and mixtures and makes recommendations for safe handling and use. Technical Data Sheets (TDS) provide information on the main applications or areas of use of the substance or product.\u003C/p\u003E\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n","links":[{"name":"Marine Safety Data Sheets","value":"https://www.shell.com/business-customers/marine/fuel/marine-safety-data-sheets.html"}],"image":{"src":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/main/section/promo_copy_copy.shellimg.jpeg/1762788103031/truck-driver-completing-paperwork.jpeg","alt":"three empployess talking","width":5733,"height":3231}}},{"organism":"PromoSimple.LinkList","color":"brand2","colspan":4,"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/section/link_list_copy","model":{"links":[{"name":"Ultra Low Sulphur Fuel Oil","value":"https://www.shell.com/business-customers/marine/fuel/ulsfo.html"},{"name":"Very Low Sulphur Fuel Oil","value":"https://www.shell.com/business-customers/marine/fuel/very-low-sulpur-fuel-oil.html"},{"name":"DMA/MGO","value":"https://www.shell.com/business-customers/marine/fuel/dma-mgo.html"},{"name":"Biofuels","value":"https://www.shell.com/business-customers/marine/fuel/biofuel.html"},{"name":"LNG and Bio-LNG","value":"https://www.shell.com/business-customers/marine/fuel/lng-in-shipping.html"}]}},{"organism":"Container.Gapless","id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/section/experience_fragment_","model":{}}],"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main/section","model":{"title":"More in Marine fuels"}}],"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/main","model":{}},{"organism":"Container.Footer","children":[{"organism":"Breadcrumb.Large","model":{"links":[{"name":"Home","value":"https://www.shell.com/"},{"name":"Business customers","value":"https://www.shell.com/business-customers.html"},{"name":"Shell Marine","value":"https://www.shell.com/business-customers/marine.html"},{"name":"Marine fuels","value":"https://www.shell.com/business-customers/marine/fuel.html"},{"name":"High Sulphur Fuel Oil","value":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700.html"}]},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/footer/breadcrumb"},{"organism":"Container.Raw","ref":"https://www.shell.com/_jcr_content/root/footer/inherited.model.json","id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/footer/inherited","model":{}}],"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content/root/footer","model":{}}],"id":"/conf/shell/settings/wcm/templates/base/structure/jcr_content/root","model":{}}],"model":{"title":"High Sulphur Fuel Oil","text":"Lower fuel costs without compromising quality","links":[{"name":"canonical","value":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700.html"},{"name":"errorUrl","value":"https://www.shell.com/error.html"},{"name":"hierarchy","value":"en_gb/business-customers/marine/fuel/rmk-500-700"},{"name":"homeTitle","value":"Shell Global"},{"name":"homeUrl","value":"https://www.shell.com/"},{"name":"locale","value":"en-GB"},{"name":"title","value":"High Sulphur Fuel Oil | Shell Global"},{"name":"textDirection","value":"ltr"},{"name":"template","value":"base"},{"name":"contentPath","value":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700"},{"name":"externalDisclaimerText","value":"Shell plc Legal Disclaimer\r\n\r\nYou are now leaving the Shell global website.\r\n\r\nThe link you have selected will direct you to a website that is not controlled by Shell plc or any member of the Shell Group. Accordingly, neither Shell plc nor any member of the Shell Group endorses, adopts, certifies or otherwise validates the information and material contained on the linked website. This includes its sponsor and any policies, activities or services offered on the site, by any advertiser on the site or linked to the site.\r\n\r\nThank you for visiting the Shell global website."},{"name":"themeMode"},{"name":"lastModified","value":"2025-11-12T09:05:27.404Z"},{"name":"dateModified","value":"2025-11-12T14:23Z"},{"name":"adobeAnalyticsUrl","value":"https://scmetrics.shell.com/b/ss/shell.amidala.nativeimplementation.poc/0"},{"name":"themeName","value":"base"},{"name":"themePath","value":"/etc.clientlibs/amidala/clientlibs/theme-base"},{"name":"themeCss","value":"/etc.clientlibs/amidala/clientlibs/theme-base.ACSHASHb291465fc8d3c7bcefde74d34044b698.css"}],"image":{"src":"https://www.shell.com/business-customers/marine/fuel/rmk-500-700/_jcr_content/root/metadata.shellimg.jpeg/1652866228228/rmk-500700.jpeg","alt":"High Sulphur Fuel Oil","width":1900,"height":1200}},"id":"/content/shell/corporate/global/en_gb/business-customers/marine/fuel/rmk-500-700/jcr_content"}