September 2006

New location for SCHOTTEL propulsion systems at SMM 2006

“SCHOTTEL for the Shipping World” – true to this motto SCHOTTEL offers propulsion and manoeuvring systems with power ratings of up to 30 MW for vessels of all kinds and sizes. The company is presenting its range of products and services at the SMM 2006 trade fair at stand 230 in the brand-new hall A 3, where an experienced sales, service and engineering team from both the headquarters in Spay and the SCHOTTEL companies in Wismar will be on hand. In connection with the extensive rebuilding measures at the Hamburg exhibition centre, the propulsion specialist has left its traditional stand location with the shipyards in hall 12 and will in future be showcasing its products in the vicinity of the engine and motor manufacturers on the new site.


The main area of application for SCHOTTEL products is vessels requiring the utmost in manoeuvrability and reliability. The current range of products and services encompasses in particular Rudderpropellers (SRP), Twin-Propellers (STP), Navigators (NAV), Podded Drives (SEP), Combi Drives (SCD), Pump-Jets (SPJ), Transverse Thrusters (STT), controllable-pitch propeller plants (SCP) as well as tailor-made steering and control systems.

An innovative propulsion concept that combines the main technical and economic criteria of both mechanical Rudderpropellers and pod drives is the SCHOTTEL Combi Drive (SCD). In contrast to pod drives with an electric motor inside the underwater pod, the motor in this propulsion system is integrated vertically into the support tube of the Rudderpropeller. This arrangement of the electric motor means that this concept is similar to that of a Rudderpropeller with a vertical power input (“L system”). Moreover, neither an above-water gearbox nor a shaft is required, making the system extremely compact and easy for the shipyard to install in the vessel. The advantages of this propulsion concept are clear. Firstly, the extremely compact nature of the system with an integrated motor, which significantly minimizes installation costs at the shipyard. Secondly, eliminating the above-water gearbox increases the efficiency of the system. Furthermore, the motor can be tried out separately on the test bed before installation, and remains freely accessible after installation in the system.
The Norwegian shipping company Fjord1 is building three LNG-powered double-ended ferries each fitted with four gas-electric SCHOTTEL Combi Drives of type SCD 2020. The ferries are to be built by the AKER Brattvaag AS shipyard. They are to operate on Route E 39 between Bergen and Stavanger, the longest and busiest fjord crossing on the west coast of Norway. The design was drafted by LMG Marin in Bergen. The four propulsion units each have a power rating of 2750 kW and will allow the ferries to make the crossing between Halhjem and Sandvikvaag in Hardaland around the clock at a speed of 21 kn.
The Norwegian Ulstein Verft in Ulsteinvik has chosen the SCHOTTEL Combi Drive as main propulsion units for two Platform Supply Vessels of type PX105 which are to be built for Bourbon Offshore Norway AS. These vessels will be equipped with two SCD 2020 units (2750 kW motor rating / 800 r.p.m. motor speed).

SCHOTTEL controllable-pitch propellers (SCP) are also continuously heading for success.
Together with MAN Ferrostaal AG, SCHOTTEL-Schiffsmaschinen GmbH in Wismar is supplying the SCPs for German ocean-going tugs with a bollard pull of 220 t. The two new vessels are being built by Mützelfeldtwerft in Cuxhaven for Harms Bergung Transport & Heavylift GmbH & Co. KG in Hamburg. Between 1975 and 1992, Mützelfeldt built about 20 SCHOTTEL tugs – some in cooperation with foreign shipyards – and was thus involved in the successful development of this tug type. The two new vessels are due for delivery in 2007. Their names have already been decided: “Ursus” and “Janus”. This contract could hardly be more symbolic.

In the tug world, it is well known that a tug named “Janus” was supplied to the same shipowner back in 1967. Following the introduction of the Rudderpropeller in 1950, applications were at first confined to inland shipping. The “Janus” ushered in an era of rapid development of more powerful propulsion units, first for harbour tugs and then also for special ocean-going vessels. This “Janus” was the very first entry in the SCHOTTEL list of references for tug propulsion systems, which now contains nearly 700 vessels. In 2005 alone, SCHOTTEL supplied more than 50 systems for tugs worldwide. While the first “Janus” still had a modest bollard pull of approximately 10 t, the figures for today’s tugs range from 50 to 120 t.