MAN B&W 17.02
Page 2 of 3
MAN Diesel
MAN B&W S46MC-C, S46ME-B, S42MC,
S35MC, L35MC, S26MC
198 69 07-5.1
Preparation for compensators
If compensator(s) are initially omitted, the engine
can be delivered prepared for compensators to be
fitted on engine fore end later on, but the decision
to prepare or not must be taken at the contract
stage, option: 4 31 212 (types 46 only). Measure-
ments taken during the sea trial, or later in service
and with fully loaded ship, will be able to show if
compensator(s) have to be fitted at all.
If no calculations are available at the contract
stage, we advise to make preparations for the
fitting of a compensator in the steering compart-
ment, see Section 17.03.
Basic design regarding compensators
Experience with our two-stroke slow speed en-
gines has shown that propulsion plants with small
bore engines (engines smaller than 46 types) are
less sensitive regarding hull vibrations exited by
2nd order moments than the larger bore engines.
Therefore, these engines do not have engine driv-
en 2nd order moment compensators.
For 5 and 6-cylinder engines type 46, the basic
design regarding 2nd order moment compensa-
tors is:
• With compensator aft, EoD: 4 31 203
• Prepared for compensator fore, EoD: 4 31 212
The available options for 5 and 6-cylinder engines
are listed in the Extent of Delivery. For 4-cylinder
engines, the information is available on request.
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