Page 74: of Maritime Reporter Magazine (October 2017)

BARKE high-lift ? ap rudders for

Dredge Magdalen

Van der Velden Marine Systems (VDVMS) in conjunction with Ships Machinery Interna- tional, Inc. (SMI) equipped the newly launched

Jones Act Trailing Suction Hopper Dredge (TSHD) with BARKE high-lift ? ap rudders. The dredge Magdalen (hull 256), is under construc- tion at Eastern Shipbuilding Group, Panama

PROPULSION UPDATES

City, Fla., and is scheduled to be delivered to its owner, Weeks Marine, before the end of 2017.

VDVMS has long experience in providing one of the most effective rudder design for this type of vessel, as dredgers have requirements for precise steering while maneuvering at very slow speed at one moment and then they re- quire accurate and ef? cient course keeping when not in dredging mode.

Magdalen measures 356 x 80 ft., with a molded depth of 27.2 ft., and features ef- ? cient, clean-burning engines and state-of- the-art frequency drives to power the vessel’s pumps, jetting and other electrically driven systems. Magdalen has twin GE 16V250 main engines producing 5,685hp each, and a GE 6L250 auxiliary engine producing 2,009hp.

Two 3,400kW shaft generators and a 1,500 kW auxiliary generator make up the ship’s pri- mary power generation plant. In addition the vessel is also equipped with a Caterpillar C18 emergency/harbor generator that produces 425 kW. Magdalen is out? tted with a 730 kW ? xed pitch tunnel thruster unit.

New Propulsion System from Caterpillar Marine

Caterpillar Marine, partnering with Caterpillar Innova- tegrated marine propulsion system from bridge interface for Advanced Marine Propulsion. “These features provide tion & Technology Development Division (ITDD), is in the down to the propellers. “Thanks to the ? exibility enabled superior vessel performance and maneuverability while fa- process of developing a proprietary advanced propulsion by the innovative Caterpillar AVD technology, the speed of cilitating signi? cant improvements in fuel and operational system for marine applications. The Cat Marine Advanced the vessel’s engines can be modulated and optimized in- ef? ciency. Caterpillar AVD technology is a cost effective

Variable Drive (AVD) is a patented system that leverages dependently from the speed of the ? xed pitch propellers. and fully integrated hybrid propulsion solution that reduces

Caterpillar’s experience with heavy duty continuously vari- The speed of the propellers can be varied continuously maintenance costs and has conventional service require- able transmission (CVT) technology, advanced controls throughout their full speed range. In addition, the power of ments. The system is scalable to meet requirements of a and power system integration knowledge. the main and auxiliary engines can be channeled indepen- wide range of vessel types, applications, power levels and

In this joint development, ITDD is leading a cross-func- dently or jointly to propel the vessel,” said Igor Strashny, enables effective downsizing of engines without the loss of tional innovation team to develop and validate a fully in- Caterpillar ITDD Engineering Manager with responsibility performance,” said Strashny.

Caterpillar 74 Maritime Reporter & Engineering News • OCTOBER 2017

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