
SCHOTTEL to supply propulsion systems for ULA’s SPACESHIP
Ro-roSCHOTTEL will provide propulsion systems for a new ro-ro cargo vessel for United Launch Alliance (ULA), constructed by Bollinger Shipyards in Amelia, Louisiana. The vessel, named SPACESHIP, will transport Vulcan rockets from the factory in Decatur, Alabama, to launch sites at Cape Canaveral Space Force Station in Florida and Vandenberg Space Force Base in California.
SPACESHIP will be fitted with three SCHOTTEL RudderPropellers (SRP 460 LE) and two SCHOTTEL TransverseThrusters (STT 1). The vessel’s electrical system will be designed and supplied by elkon, part of the SCHOTTEL Group. Completion is scheduled for 2026.
The main propulsion system comprises three SRP 460 units in the embedded L-Drive variant, each with an input power of 2,100 kilowatts and a propeller diameter of 2.6 metres. These units enable the 111-metre-long and 25-metre-wide vessel to reach a maximum speed of 15 knots. The 360-degree steerable SRP provides manoeuvrability and course stability during free sailing, delivering thrust in any direction. The L-Drive variant incorporates a compact electric motor within the thruster’s azimuth module, reducing the thruster’s height. This design suits confined spaces or environments with limited installation space for machinery. Fewer mechanical components also reduce mechanical losses and maintenance costs.
To improve the vessel’s manoeuvring performance, it will include two STT 1 units, each with an input power of 373 kilowatts and a propeller diameter of 1.3 metres. These thrusters support tasks ranging from brief docking and undocking in ports with limited operating hours to continuous operation under high-load conditions for precise positioning. The propulsion package, suitable for both ocean and river navigation, ensures effective manoeuvring, which is essential for the safe transport of valuable cargo. SCHOTTEL’s supply includes the MasterStick, a joystick system that controls all five propulsion units simultaneously with one lever for precise manoeuvring.
Elkon will provide Active Front End (AFE) Drive technology for the main electrical propulsion system, which enhances efficiency and reduces fuel consumption. The system supports quieter and smoother operation while managing energy across all vessel systems. elkon will also supply main switchboards, an Alarm Control and Monitoring System (ACMS) for real-time diagnostics and issue resolution, and a Power Management System (PMS) to optimise energy distribution by integrating generators and switchboard functions. The package includes Motor Control Centres (MCC), Power Distribution System Panels, and Bridge and Engine Control Centre Consoles, all designed to meet classification society standards and marine electrical guidelines, ensuring safety and reliability.
Integrated system design Through collaboration between SCHOTTEL and elkon, SPACESHIP’s propulsion system is optimised for hydrodynamic and electrical performance. The companies’ shared expertise, developed over years of partnership, supports reliable consultation through a single point of contact and efficient system designs. A global network of service stations, advisers, and technicians provides ongoing support.
Vulcan rocket The Vulcan rocket, a heavy-lift launch vehicle developed by ULA, was first launched in January 2024 to replace the Delta IV and Atlas V rockets. It can be fitted with up to six solid-fuel boosters to adjust payload capacity based on mission needs, supporting operations such as satellite launches into various orbits.
© Shippax
May 28 2025
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