Page 28: of Maritime Reporter Magazine (February 1994)

PROPULSION SYSTEM - DSR COASTERS TYPE ROSTOCK PROPULSION UPDATE

Sixth MAN B&W-Powered Ship For DSR

Christened Frischland

Sketch of the main propulsion system.

The M/S Frischland is the sixth of a 999-grt coaster series built by

Slovenske Lodenice A.S. (Komarno,

Slovakia) for Deutsche Seereederei

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Rostock GmbH (DSR).

The first three vessels of the se- ries—the Rugen, Hiddensee and

Poel—are currently operating in the

U.S. and Mediterranean trade. The fourth vessel, the M/S Usedom, was commissioned in November, and the fifth vessel, the M/S Vilm, was com- missioned at the end of last year.

Each of the vessels measures 288 feet with a 42-foot breadth and an 18-foot draft and has a 168-teu con- tainer capacity.

THE PROPULSION

All of the vessels are powered by a MAN B&W Alpha four-stroke me- dium-speed propulsion package manufactured at MAN B&W's

Frederikshavn Works in Denmark.

The package consists of a MAN B&W 6L28/32A-D main engine, an Alpha 31V016 reduction gear, an Alpha

Sistership M/S Poel off of Istanbul, Turkey.

VB640 propeller and an Alphatronic control and safety system.

The main engine, rated at 1,020 kW at 760 rpm (max. 1,470 at 775 rpm) operating with diesel oil drives an 8.2-foot four-bladed controllable pitch propeller via a 1:3.1 vertical offset gearbox. The main engine, which is delivered with a complete starting air compressor package, is air-motor started direct on flywheel, constant pressure turbocharged, wet sump lubricated and fresh water cooled via a centralized system with plate coolers connected to twin

Bloksma box coolers.

Electrical power is supplied via two generating sets based on 230- kW high-speed MAN engines, type

D2866LE.

The propeller system, complete with blades (NiBrAl) monoblock hub shafting and oil lubricated stern tube, together with the reduction gearbox and main engine, is con- trolled by the Alphatronic remote 38

Engine leaving the factory.

Maritime Reporter/Engineering News