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description=Novatug develops the Carrousel Rave Tug, a patented tugboat that cannot capsize under transverse towline load. Internal testing indicates approximately 30% lower fuel use under the tested conditions.;

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carrousel rave tug advanced maritime towage novatug skip to main content home the crt megatrends research data contact the crt carrousel rave tug technology maneuvers and training explore the vessel its operational capabilities and the environments used to prepare crews and projects explore the crt carrousel rave tug vessel specifications engineering maneuvers dynamic towing modes performance training simulation full mission and manned model training data research backed maritime safety tools and archives searchable incident archive and trend analysis for tug operations worldwide open the dashboard accidents database searchable archive of tug and large vessel incidents analytics dashboard maritime safety trend visualisations wiki maritime reference pages for accidents vessels concepts regions and organizations the crt carrousel rave tug vessel specifications engineering maneuvers dynamic towing modes performance training simulation full mission and manned model training data accidents database analytics dashboard wiki home megatrends research contact play video patented innovation carrousel rave tug put thrust in nature the carrousel rave tug gives ports and towage operators greater control over large vessels its patented freely rotating towing point means the tug cannot capsize under transverse towline load discuss a crt deployment explore the crt static bollard pull in calm water 70 tons measured multratug 32 dynamic pull 180 tons total engine power 2 abc 12vdzc 5 300 kw maximum free running speed 14 1 kn length overall 31 9 m swipe for more specifications why novatug port context experience deployment research ships are getting larger ports need more control every vessel arrival puts demands on the people tugs and space available novatug gives ports and towage operators a new way to meet those demands more control over how a ship slows turns and comes alongside the crt brings that capability to daily harbour towage with 6 000 jobs completed by multratug 32 and multratug 33 discover how the crt works 360 rotating tow ring the innovation carrousel rave tug the carrousel towing system features a freely rotating steel ring around the tugboat s hull this patented design means the tug cannot capsize under transverse towline load addressing a failure mode that has caused many tug losses combined with voith schneider propulsion the hull generates hydrodynamic lift for braking and steering large vessels using minimal engine power while maximizing control as mega vessels continue to grow now 15 larger than in 1968 the need for advanced tug control has never been greater enhanced safety cannot capsize under transverse towline load maximum control 360 towing capability fuel efficiency less power more thrust explore the crt the operational advantage dynamic control for larger vessels the crt turns towage into a more active form of vessel control instead of relying only on engine thrust it uses towline force hull lift and 360 degree positioning to help brake steer and stabilize large ships while they still have momentum this matters because many ports now receive vessels beyond the scale they were originally designed around more effective towage can extend useful port capacity by addressing the control problem directly not only the depth problem the alternative to dredging dredging can deepen a channel but it does not make a large vessel easier to stop or turn the crt acts as floating infrastructure adding control where fixed infrastructure cannot dynamic bollard pull effective force in real conditions hydrodynamic braking hull lift supports stopping power infrastructure leverage more control without fixed works lower power demand efficiency depends on operation 180 t dynamic line force reached by multratug 32 five forces are making vessel control harder larger vessels tighter schedules and constrained infrastructure increase the value of control in confined waters dredging addresses depth the crt addresses how a vessel is stopped and turned pause rotation how to handle giant ships see how the rotating towing point and hull work together during a vessel assist play video voices from crt operations perspectives from tug masters and operators originally published in novatug s june 2019 whitepaper for me as a captain this means that the work is easier because the tug offers more possibilities through its maneuverability it brings more rest because the risk of capsizing due to towline forces is no longer present hildebrand kamerling tugboat captain rotterdam and antwerp the actual measured difference over the charter period was an average of 260 litres per hour on the port s own tugs and 160 litres per hour for the crt leendert muller managing director multraship read all four perspectives a purpose built crt configured for your operation novatug coordinates the development and deployment of complete crt newbuilds the vessel commercial structure and training programme are shaped around the port assisted vessels and operating profile define the operation start with the port assisted vessels duty cycle and local conditions configure and validate shape the vessel and commercial structure visit operating crts and test scenarios in the full mission simulator build train and deploy coordinate the newbuild and prepare crews for the manoeuvres their operation requires battery electric development a fully electric crt can be developed jointly lower operating power demand means less battery capacity may be needed while the final battery and propulsion configuration is determined by the vessel s round the clock operating profile discuss a crt deployment go deeper into vessel control read the research behind the crt and explore its operational capabilities browse the research our journey the novatug timeline from a visionary design contest entry to operating crts advanced training and full mission simulation swipe or use the arrow controls to explore the timeline 1997 the idea is born dr m van der laan enters the design contest tug of the future with the revolutionary carrousel towing concept view milestone 1999 muller family shows first interest the muller family owners of multraship recognizes the potential of the carrousel towing system view milestone 2000 patent granted patent granted to dr van der laan s company imc bv for the carrousel towing concept view milestone 2002 novatug launched novatug is founded to develop the carrousel towing system an existing tug is retrofitted with carrousel technology as proof of concept view milestone 2003 dutch maritime innovation award carrousel tug concept wins the prestigious dutch maritime innovation award novatug invests in r d business modelling and partnerships view milestone 2013 robert allan ltd commissioned for first crt design novatug partners with the world renowned naval architecture firm to bring the crt concept to reality view milestone 2014 bureau veritas involved as classification society classification and regulatory approval process begins for the crt design view milestone 2015 construction begins van der velden barkemeyer gmbh starts building crt s theodor buschmann gmbh starts building bodies novatug commissions damen shipyards group bv official signing at europort fair rotterdam view milestone 2017 customer multraship starts operating first crt s the world s first carrousel rave tugs begin commercial operations view milestone 2018 novatug wins maritime kvnr shipping award recognition for outstanding innovation in the maritime towage industry view milestone 2019 two brand new crt s were named multraship held the christening ceremony for multratug 32 and multratug 33 at rotterdam view milestone 2021 first 1 000 jobs completed multratug 32 and multratug 33 reach a combined total of 1 000 jobs across antwerp vlissingen and terneuzen 2021 remote controlled towage trial multraship novatug voith and macgregor remotely control multratug 32 from a shore station during full scale trials including assisted vessel handling dynamic positioning and remote transfer line handling watch the trial 2024 2 500 jobs completed multratug 32 and multratug 33 reach a combined total of 2 500 jobs across antwerp vlissingen and terneuzen 2026 full mission crt simulator launched novatug and multraship launch an advanced wärtsilä based training centre in terneuzen including a high fidelity digital crt model for complex towage and vessel handling scenarios explore training simulation frequently asked questions what is the carrousel rave tug the carrousel rave tug crt is a patented tugboat design developed by novatug b v its freely rotating towing ring means the tug cannot capsize under transverse towline load combined with voith schneider propulsion the crt generates hydrodynamic lift for braking and steering large vessels multratug 32 is rated at 70 tonnes static bollard pull and has reached up to 180 tonnes of dynamic line force in operation who makes the carrousel rave tug the carrousel rave tug is developed by novatug b v based in alphen aan den rijn the netherlands the concept was invented by dr m van der laan and patented in 2000 the first commercial crts entered commercial operation with multraship in 2017 what is dynamic bollard pull and why does it matter dynamic bollard pull is the force a tug delivers while assisting a moving vessel the crt uses hydrodynamic lift to generate braking and steering force multratug 32 delivers 180 tonnes of dynamic bollard pull and has a static bollard pull rating of 70 tonnes can the carrousel rave tug capsize the crt cannot capsize under transverse towline load the freely rotating towing ring around the hull keeps the towing point aligned with the towline instead of allowing a transverse load to create a capsizing moment is the carrousel rave tug commercially available yes the first carrousel rave tugs entered commercial operation with multraship in 2017 contact novatug b v at info novatug nl or 31 0 172 533 705 to discuss long term deployment leasing or joint development engineered for the forces ports face lemelerberg 7 2402 zn alphen aan den rijn the netherlands the crt carrousel rave tug maneuvers training simulation megatrends research data research articles accidents database analytics dashboard maritime wiki contact contact novatug info novatug nl 31 0 172 533 705 coc 24361476 vat nl 8134 06 791 b01 2026 novatug b v all rights reserved disclaimer privacy cookies cookie settings contact manage consent to provide the best experiences we use technologies like cookies to store and or access device information consenting to these technologies will allow us to process data such as browsing behavior or unique ids on this site not consenting or withdrawing consent may adversely affect certain features and functions functional functional always active the technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user or for the sole 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