flap rudder for ships
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Often copied, never surpassed Genuine and original product range WWW.BECKER-MARINE-SYSTEMS.COM MANOEUVRING M AT E R I A L H A N D L I N G COMMUNICATION

RUDDER PROFILES TWISTED FLAP Often copied, never surpassed Genuine and original Our products are based on over 60 years of successful business with the world’s shipping and shipbuilding industry. Becker products have been installed on over 7,000 ships and we still continue to improve and further develop manoeuvring solutions for the future. Becker teamed up with several international industry and institute partners to jointly develop even better products. We use global trademarks and industrial property rights to protect our knowledge base. Page 3 FULL SPADE HEEL SUPPORT KSR SUPPORT Becker...

RUDDER PROFILES TWISTED FLAP Rudder profile & design SCHILLING ® combinations & other N-C VECTWIN FKSR SCHILLING® KSR KSR S-A MONOVEC-A N-A NAVIGATOR FK-C HERUS® RUDDER DESIGNS HRC-C TLFKSR FK-A HERUS® SUPPORT SEMISPADE Our rudder systems are a combination of a Becker rudder profile and a Becker rudder design (type of rudder support). Each rudder is tailor-made to the individual demands of the ship in question. The table above shows you our best-proven combinations of Becker rudder profiles and Becker rudder designs. FULL SPADE HRC-A MARINER On the following pages we have introduced the...

RUDDER PROFILES Becker rudder HEEL SUPPORT KSR SUPPORT FULL SPADE RUDDER DESIGNS NACA & OTHER SCHILLING ® FLAP TWISTED profiles Page 7 KORT NOZZLE HERUS ® SUPP. / SEMI-SPADE The rudder profile determines the lift and drag of a rudder. Whether it is a high-lift rudder or a (more economical) standard profile, a special profile for cavitation avoidance, improving ship’s speed, fuel saving or navigation in ice - Becker has the right solution according to your ship’s requirements.

HERUS SUPP. / SEMI-SPADE Page 9 HEEL SUPPORT KSR SUPPORT Available for FULL SPADE RUDDER DESIGNS NACA & OTHER SCHILLING ® FLAP TWISTED Twisted leading edge KORT NOZZLE ® Genuine Becker technology RUDDER PROFILES

Genuine Becker technology Twisted leading edge Conventional rudders are placed behind the propeller with the rudder cross section arranged symmetrically about the vertical rudder centre plane. However, this arrangement does not consider the fact that the propeller induces a strong rotational flow that impinges on the rudder blade. This results in areas of low pressure on the blade that induce cavitation and associated erosion problems. To avoid cavitation and to improve the manoeuvrability performance of a full spade rudder, Becker has enhanced the development of twisted leading edge rudder...

RUDDER PROFILES TWISTED Twisted leading edge rudder ® FLAP TLKSR RUDDER DESIGNS NACA & OTHER No rudder induced cavitation erosion Improved manoeuvring performance No horn required – reduced weight Lower installation costs, no cast parts Reduced maintenance costs Reduced number of bearings Proven fuel saving Becker rudder design with Twisted Leading Edge profile: Available for 1. 2. HERUS SUPP. / SEMI-SPADE Improved developments: 1. Twisted Rudder with B-Deflector 2. Twisted Rudder with S-Deflector ® Extensive use of FEM&CFD techniques as well as cavitation tunnel tests and full scale...

The Twisted Leading Edge Flap Rudder TLFKSR is a Becker Flap Rudder in combination with Twisted Leading Edge KSR (King Support Rudder) mounting and has the following benefits: • Best manoeuvring performance at low speed due to flap • Minimised cavitation erosion due to incorporation of twisted leading edge • Reduced fuel consumption due to rudder profile adapted to propeller flow • Reduced risk of vibration Becker's Twisted Flap Rudder is especially suitable for faster applications such as Ro/Ro, Ro/Pax, cruise vessels Becker rudder design with Twisted Flap Rudder profile:

KORT NOZZLE Page 13 HERUS SUPP. / SEMI-SPADE ® HEEL SUPPORT KSR SUPPORT Available for FULL SPADE RUDDER DESIGNS NACA & OTHER SCHILLING ® FLAP TWISTED RUDDER PROFILES

RUDDER PROFILES Becker rudder profiles FULL SPADE HERUS SUPP. / SEMI-SPADE • KSR support (Becker Flap FKSR, Becker Twisted Flap TLFKSR) HEEL SUPPORT KSR SUPPORT Available for Becker rudder designs with flap profiles: • Full spade (Becker Flap S-C, Heracles Flap HRC-C) • Heel support (Becker Flap S-A, Heracles Flap HRC-A) Page 15 KORT NOZZLE ® The Becker Flap Rudder family consists of the classic Becker Flap Rudder and the Heracles Flap Rudder designs. The Becker Flap Rudder is the most popular rudder type worldwide and is derived from the first developments made by company founder Willi...

Flap rudder profile Becker flap Page 16

Becker Flap Rudders guarantee the best possible manoeu- vrability for your vessel at all speeds with lowest possible fuel consumption. • Optimum balance and flap area • Minimum steering gear size • Highest insurance against flexural vibration, best values of natural vibration • Rudder angles of 45° and additional 45° of the flap, in special execution rudder angles of 65° and additional 45° flap angle may be applied • Easy maintenance of link and hinge system • Highest safety against cyclic stresses • Optional KSR Rudder support The Becker Flap Rudder is the ultimate rudder solution when it...

Closed flap link system filled with grease Optimum protection of link system against ice and sand High durability of link system Progressive flap action ensures superior manoeuvring Total flap angle up to 100° at rudder angle 45° Safe & reliable link system with protection device against excessive forces Minimum size of steering gear Easy installation - no adjustment of link system required Optional: neck bearing with spherical shell for low neck bearing tolerance & especially suitable for low noise requirements Rudder stock Flange for link system pivot point Flap bearing Moveable flap...