Marine Installation Manual
2021-08
4-32
4 Ancillary Systems
4.3 Lubricating oil systems
X72DF
Table 4
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6
Minimum inclination angles for full operability of the engine (3)
Classification societies (overview see Appendix,
Year of latest update by Class
LR
2020
NK
2019
PRS
2021
RINA
2018
RS
2020
Main and auxiliary engine
Abbreviation
5/1/3/3.7
D/1.3.1/6
VI/1/1.6.1
C/1/1/2.4
VII/2/2.3
Heel to each side
15°
15°
15°
15°
15°
Rolling to each side
22.5°
22.5°
22.5°
22.5°
22.5°
Trim by the head
a)
5°
5°
5°
5°
5°
Trim by the stern
a)
5°
5°
5°
5°
5°
Pitching
±7.5°
±7.5°
±7.5°
±7.5°
±7.5°
Emergency sets
Abbreviation
5/1/3/3.7
D/1.3.1/6
VI/1/1.6.1
C/1/1/2.4
VII/2/2.3
Heel to each side
22.5°
c)
22.5°
b)
c)
22.5°
c)
22.5°
c)
22.5°
c)
Rolling to each side
22.5°
c)
22.5°
b)
c)
22.5°
c)
22.5°
c)
22.5°
c)
Trim
10°
10°
b)
10°
10°
10°
Pitching
±10°
±10°
b)
±10°
±10°
±10°
Electrical installation
Abbreviation
6/2/1/1.10
H/1/1.1.7
VIII/2/2.1.2.2
C/2/2/1.6
XI/2/2.1.2.2
Heel to each side
15°
15°
c)
15°
22.5°
b)
15°
c)
Rolling to each side
22.5°
22.5°
c)
22.5°
22.5°
b)
22.5°
c)
Trim
5°
a)
5°
a)
5°
10°
b)
5°
c)
Pitching
±7.5°
±7.5°
±10°
±10°
b)
±10°
c)
a) Where the ship’s length exceeds 100m, the fore-and-aft static angle of inclination may be taken as 500/L degrees.
(where L = length of ship in metres)
b) Up to an inclination angle of 45 degrees, switches and controls are to remain in their last set position as no undesired
switching operations or operational changes may occur.
c) For ships carrying liquefied gases or chemicals the arrangement is to be such that the emergency power supply also re
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mains operable with the ship flooded to a final athwartships inclination up to 30 degrees.
