This section is available on request - MAN Diesel & Turbo

MAN B&W
<strong>Th<strong>is</strong></strong> can be pre�programmed into the software
just as the so�called ‘economy mode’ and ‘low
NO x mode’. Hence, the operating engine of will be
readily optim<strong>is</strong>ed for the purpose, and full mobility
of the vessel ensured.
As per calculation, a speed of 75% of the design
speed of the vessel can be obtained with a single
engine in operation.
Load
125%
100%
75%
50%
Propeller performance on twin-screw vessel
Heavier running, when
only one propeller <strong>is</strong>
in operation
Single engine running mode
for ME-engines
25%
50% 60% 70% 80% 90% 100%
Speed
Two propellers
in operation
110%
178 52 58�0.0
Fig. 7.08.03: Propeller curves in load diagram with one
vs. two propellers working
MAN Diesel
7.08
Page 3 of 3
MAN B&W S70ME�GI, S65ME�GI, S60ME�GI 198 48 39�3.2