Feature 2 | PROPELLERS & THRUSTERS
design has resulted in a 20% weight reduction compared to units of the preceding series of azimuth thrusters. Other features of the SRP 4000
include integrated steering hydraulics and a noise-optimised gearbox designed for a large range of input speeds and requiring about 35% less in the oil charge. A propeller nozzle tailored to the new design has been prepared for high speed applications, while the SRP 4000T variant has been developed for terminal tugs of 80t bollard pull capacity or more. Te SRP 4000 can be used in Schottel
Twin Propeller(STP) configurations where a relatively high service speed is required, as with ferries and offshore supply vessels. Te company has also released a new,
small Rudder-propeller thruster, the SRP 0320, suited to power applications of 150-220kW at 1800/2300rpm, and additionally available for STP Twin Propeller applications. The design
reflects close consideration of the specific requirements of the small-vessel market as regards not only operation, but also installation and servicing. For instance, an integrated hydraulic system makes for a ‘plug and play’ fit, eliminating work aboard the vessel. One version of the SRP 0320 Rudder-
propeller can be supplied in a nozzle. This is the first time that a Rudder- propeller of such small size has been available with a nozzle, and has been developed to give more thrust and manoeuvrability in shallow waters. The new series is the successor to the SRP/ STP 110 models. Furthermore, Schottel has introduced
a completely re-engineered series of transverse thrusters covering the power band from 600kW to 1500kW under the designations STT 1-STT 5. The research and development programme for this range has resulted in more efficient, hydrodynamically optimised propeller
The 4000 series represents an entirely new generation of azimuth thrusters, and reflects Schottel’s R&D work in structural mechanics and hydrodynamic design.
design, with lessened noise and reduced losses at low or zero propeller pitch. Demanding criteria for dynamic
positioning of offshore vessels have been taken into particular account. Propeller blade tip speed and propeller load have been reduced to the practical minimum, in the interest of the service life of drive seals, bearings, propeller hub and
blades.NA
WORLDWIDE SERVICE 24/7
At TurboNed, we have over 30 support service stations located throughout the world. This enables us to offer worldwide turbocharger service and repairs for customers operating in the shipping, power plant, offshore and railway markets.
For latest contact details and information about our global network check:
www.turboned.nl TurboNed Group B.V. • Kreekweg 10 • 3336 LC Zwijndrecht • T: +31 78 6205252 • F: +31 78 6123230 • E:
service@turboned.nl 40
TURZ_11228_ADV_Naval_DEF.indd 1 The Naval Architect July/August 2011 09-06-11 13:30
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