50 Years of Schottel Controllable Pitch Propellers

MarineLink.com
Thursday, July 25, 2013
State of the art SCHOTTEL Controllable Pitch Propeller

Controllable-pitch propellers have been developed and produced on the Baltic coast of Germany since 1962 – initially in Rostock, and then in Wismar from 1964.

The first units were manufactured for 86 freezer-trawlers of type Tropik for the Soviet Union. Four further types were produced for GDR fishery vessels. The first years of controllable-pitch propeller production in Wismar centered on systems with a power rating of 1,930 kW for 199 freezer-trawlers of type Atlantik. A total of 230 controllable-pitch propeller systems were delivered up to the end of 1969. Over the years, the location evolved into a center of excellence tasked with planning and designing all propellers for shipbuilding in the GDR, as well as carrying out research in the field of propeller and fluid dynamics. From 1970, controllable-pitch propeller systems of the second generation were implemented, with simplified kinematics and a significant reduction in the number of parts. A total of 195 vessels of the type Atlantik Supertrawler were fitted with this propeller (2,850 kW, 3.4 m diameter). In 1975, systems with an input power of 8,250 kW (5.3 m diameter) were manufactured for bulk carriers, and later also for Multi-Bulk Container freighters, for delivery to the Federal Republic of Germany. Later additions to the production range were controllable-pitch propeller systems for trailer vessels, ferries and large freighters with constant-speed operation for shaft generators. In 1995, the most powerful controllable-pitch propeller system ever manufactured to date, with 15,000 kW and a diameter of 5.2 m, was supplied for a passenger-carrying container ship.

Major impulses from the Schottel Group

In 1999, Schottel acquired the then WPM Wismarer Propeller- und Maschinenbau GmbH and has since built on the existing expertise in the development of controllable-pitch propellers. Major new impulses came from the new parent company in western Germany. A state-of-the-art manufacturing facility with highly qualified, flexible employees has been built up. The company’s portfolio now includes controllable-pitch propeller systems of up to 30 MW. They are used wherever utmost requirements in terms of variable modes of application and high maneuverability have to be met, from conventional freighters to fast ferries and powerful tugs, and can even be implemented for continuous operation under extreme loads in demanding offshore service with dynamic positioning. In 2012, five-bladed controllable-pitch propellers for fast vessels were brought onto the market. These are designed for applications with requirements for a lightweight construction in combination with high power ratings, e.g. for military vessels or yachts. They are based on the proven design principles of the standard systems but offer an even higher power density and a weight reduced by up to 15% while retaining the accustomed reliability and robustness.

The propellers have been optimized in accordance with the latest state of the art in hydrodynamics and structural mechanics and are characterized by improved efficiency, reduced pressure pulses and structurally optimized hubs. At the same time, the simple and maintenance-friendly design and functional principle of the classic Schottel CP propeller systems have been retained.

Schottel SCP controllable-pitch propeller systems of the 5-X series are available with power ratings from 1,000-20,000 kW.

For all sizes there is an optional version with feathering capability. This makes it possible to satisfy the requirements of different operational states in the case of multi-shaft systems and combined propulsion concepts such as a CP propeller in combination with an SCD.

The Schottel Group, with its headquarters in Spay/Rhine, is one of the world’s leading manufacturers of propulsion and steering systems for ships and offshore applications. Founded in 1921, the company has been developing and manufacturing azimuth propulsion and maneuvering systems, complete propulsion systems with power ratings of up to 30 MW, and steering systems for vessels of all sizes and types, for about 60 years. Around 100 sales and service locations worldwide ensure customer proximity.

 

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

NASSCO Lays Keel for Jones Act Tanker Liberty

U.S. shipbuilder General Dynamics NASSCO hosted a keel laying ceremony on Thursday, May 26 for the Liberty, one of three new ECO Class Jones Act tankers under a

DSC Dredge Receives President’s E-Star Award

DSC Dredge, LLC, based in Reserve, La., has received the 2016 President’s “E-Star” Award for exports.   In a ceremony held on May 16, 2016, at the U.S. Department

TT Club Reports Robust Financial Results for 2015

TT Club has announced its financial results for the year ended December 31, 2015, and AM Best affirms its A- (Excellent) rating for the 10th consecutive year.   Knud Pontoppidan,

Marine Propulsion

MAN 28/33D STC Engines for Thai Navy’s New OPV

The Royal Thai Navy has ordered a new 90-m offshore patrol vessel (OPV) to be constructed at Mahidol Adulyadej naval dockyard in Sattahip.  The newbuilding, an improved River-class design,

Norsafe Debuts New RIB in Gothenburg

Norsafe has released its first RIB, the Marathon 900, to compliment its range of boat models for professional and military customers.  Launched at High Speed

Wärtsilä Donates Engine to Texas A&M University

Wärtsilä has donated an 8-cylinder Wärtsilä 20 engine and generating set, to the Marine Engineering Technology Department at Texas A&M University at Galveston.

Marine Equipment

GloMEEP Project Forges Ahead with Train-the-Trainer Workshop

A global Train-the-Trainer workshop on energy efficiency has been delivered in China (23-27 May), preparing the personnel needed to cascade knowledge on energy

Diana Charters Out Two Bulkers

Diana Shipping Inc. today announced that, through a separate wholly-owned subsidiary, it entered into a time charter contract with Bunge S.A., Geneva, for one of its Panamax dry bulk vessels,

Hansa Offenburg, Hansa Drakenburg Sail Scale-free

Leonhardt & Blumberg was founded in 1903 and has managed more than 180 vessels, the majority of which were general cargo vessels and bulk carriers. Today the company

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Pod Propulsion Port Authority Ship Simulators Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1428 sec (7 req/sec)