STT SCHOTTEL TransverseThruster | SCHOTTEL - YOUR PROPULSION EXPERTS YOUR PROPULSION EXPERTS Portfolio Media & Events Career About us Contact MariNet 24/7 + DE Overview New Builds Retrofits After Sales Products References Overview Press Releases Events Stories Corporate Magazine Download Center Overview Why SCHOTTEL? Training & Careers Vacancies Application process Overview Mission Statement SCHOTTEL Group Maritime Group Engineering Production History Overview Sales and After Sales General Tugs Ferries Fishing Vessels Naval Vessels Service Operation Vessels (SOV) Passenger and Cruise Ships Cargo Vessels and Tankers Research Vessels Offshore Construction Vessels (OCV) Yachts Inland Cargo Vessels Dredgers Other Vessel Types Overview Emergencies Technical consultation Preventive maintenance Training courses SRP RudderPropeller SRE EcoPeller STP TwinPropeller SCP ControllablePropeller SCP SRP-R Retractable RudderPropeller SPJ PumpJet STT TransverseThruster SRT RimThruster SAS Automation Systems SMS Marine Services Overview What we offer Sites Overview Experienced professionals Graduates Students School students Case studies Overview Sustainability Corporate Governance Overview Hydrodynamics & Propeller Design Mechanical R&D Automation & Propulsion Control Product Information Research Overview Dörth Wismar Quality Start Portfolio Products SCHOTTEL TransverseThruster Request Worldwide Contact Mail sales@schottel.de STT SCHOTTEL TransverseThruster Robust, durable, user friendly – the SCHOTTEL TransverseThruster improves manoeuvring performance in vessels of all types and sizes. The STT’s area of operation ranges from short docking and casting off in ports with only a few operating hours per year to continuous operation and the highest loads in demanding offshore applications with dynamic positioning. Advantages In Detail References Technical data Features Gallery Advantages At a glance Maximum thrust Compact design Less maintenance required due to its robust, high-quality design SCHOTTEL-exclusive features such as LeaCon or HTG (optional) Well installation for easy access to the propulsion unit (optional) Elastically mounted installation for lower noise levels (optional) IN DETAIL Maximum thrust for maximum manoeuvrability A crucial factor for the STT is thrust. This is why SCHOTTEL attaches great importance to an optimal propeller design, which is customized to the respective vessel geometry. For example, the clearance between tunnel and propeller is an important parameter for the efficiency of the propulsion unit; this clearance has been reduced to a minimum for all STT types. This effectively results in greater thrust. On request, special requirements regarding noise levels can be taken into account, e.g. a resiliently mounted installation.   References STT in operation CCGS Naalak Nappaaluk Other Naval / Governmental Ship Green Heart Chemical Tanker Monsoon Enabler Walk to Work Vessel (W2W) Ouyang 007 Wind Turbine Installation Vessel (WTIV) Nerea RoPax Ferry Odón de Buen Oceanographic Research Vessel HaiSea Tug Fleet (Battery-Electric; Dual-Fuel) Azimuth Stern Driven Tug (ASD) Arvac Live Fish Carrier Show all references Less noise, more comfort SCHOTTEL TransverseThruster with elastic well installation more information Technical data STT in numbers STT Type FPP CPP Power Range [kW] Nominal Input Speed L [rpm] Propeller Diameter [mm] Arrangement L STT 60 ✓ - 90 - 125 1500 620 ✓ STT 110 ✓ - 140 - 200 1500 790 ✓ STT 170 ✓ - 245 - 350 1500 / 1800 1090 ✓ STT 1 ✓ ✓ 400 - 600 1500 / 1800 1290 ✓ STT 2 ✓ ✓ 600 - 850 1500 / 1800 1540 ✓ STT 3 ✓ ✓ 700 - 1000 1200 / 1500 / 1800 1740 ✓ STT 4 ✓ ✓ 1000 - 1400 1000 / 1200 1990 ✓ STT 5 ✓ ✓ 1250 - 1800 1000 / 1200 2240 ✓ STT 6 ✓ ✓ 1650 - 2500 900 / 1000 2590 ✓ STT 7 ✓ ✓ 2000 - 3200 750 / 900 / 1000 2790 ✓ STT 610 ✓ - 2500 - 3500 720 / 750 3200 ✓ S = Standard, O = Option The above information is for guidance only. They do not apply to ice-classified ships. The final choice of propulsion unit depends on the actual operational profile of the vessel and is determined by SCHOTTEL. The ratings given are based on experience in the typical areas of operation of the respective vessel types. If you cannot identify your application in the “Typical applications” section or if you have a vessel with a special area of application, SCHOTTEL will be happy to determine the most suitable propulsion unit for you.   Show less Show all Features Special advantages of SCHOTTEL In addition to developing new products and services, SCHOTTEL works continuously to optimize existing systems. Special features ensure that customers worldwide benefit from state-of-the-art solutions. HTG: innovative High Torque Gear SCHOTTEL’s self-developed High Torque Gear (HTG) extends the service life of the gearbox, resulting in significant performance and safety gains. State-of-the-art milling and calculation methods are used to achieve shapes that enable a highly efficient, robust and safe gearbox with ideal gear geometry. The HTG allows for example up to 15 percent more drive torque to be applied with the same bevel gear dimensions and in compliance with the same safety requirements of the classification societies. LeaCon: reliable seal monitoring system SCHOTTEL LeaCon is a sealing system certified by DNV which offers safe and reliable protection against contamination of the seawater by operating materials. Separate seals to the seawater and to the gearbox side ensure that both incoming seawater and escaping gear oil are collected in an intermediate chamber (LeaCon chamber). This effectively prevents water from entering the gearbox and, above all, oil from escaping into the seawater. With the connected vacuum system, the leakage fluid is automatically collected in a compact tank in the engine room. Continuous monitoring In addition to the leakage-free sealing against seawater, the LeaCon system is used to monitor the condition of the seals. It registers the amount of leakage collected and continuously checks the condition of the seals. This means that operational wear can be detected at an early stage and unscheduled maintenance can be avoided. Complies with VGP regulations of the EPA SCHOTTEL propulsion units equipped with the LeaCon sealing system comply with the VGP regulations of the US-American Environmental Protection Agency (EPA). There is no need to use bio oils (EAL). Elastic well installation This installation variant can also be supplied in an elastic version , which ensures a further reduction in noise and vibration levels during operation while enhancing comfort on board. Gallery STT IN images Engineering Propulsion by experts Production From Germany to the entire world Quality Our quality promise More Information Worldwide Service Media Contact Pages Portfolio Media & Events Career About us Contact Products SRP SRE STP SCP SRP-R SPJ STT SRT SAS SMS Products for Tugs Ferries Fishing Naval SOV Cruises Cargo Research OCV Yachts Inland Cargo Dredgers Other Types SCHOTTEL GmbH Mainzer Str. 99 D-56322 Spay/Rhein E-Mail: info@schottel.de   Certificates Follow us on Legal Notice Compliance Privacy Edit Cookie-settings Terms of Use © 2026 SCHOTTEL Group Cookies In addition to technically necessary cookies, we would like to ask for your consent to use a statistics cookie as well as the OpenStreetMap map service for information about the locations of our branches. Statistics Map service Accept all Save selection Privacy