1 Definition
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Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.232(65) – 2013 Interim Guidelines for Determining Minimum Propulsion Power to Maintain the Manoeuvrability of Ships in Adverse Conditions – (Adopted on 17 May 2013)Amended by Resolution MEPC.255(67) - Annex – 2013 Interim Guidelines for Determining Minimum Propulsion Power to Maintain the Manoeuvrability of Ships in Adverse Conditions - 1 Definition

1 Definition

  1.1 "Adverse conditions" mean sea conditions with the following parameters:

Significant wave height h s, m Peak wave period T P, s Mean wind speed V w, m/s
5.5 7.0 to 15.0 19.0

JONSWAP sea spectrum with the peak parameter of 3.3 is to be considered for coastal waters.

  1.2 The following adverse condition should be applied to ships defined as the following threshold value of ship size.

Ship length, m Significant wave
height h s, m 		Peak wave period
T P, s 		Mean wind speed V w,
m/s
Less than 200 4.0 7.0 to 15.0 15.7
200 ≤ L pp ≤ 250 Parameters linearly interpolated depending on ship's length
More than L pp = 250 Refer to paragraph 1.1
Parent topic: Annex – 2013 Interim Guidelines for Determining Minimum Propulsion Power to Maintain the Manoeuvrability of Ships in Adverse Conditions
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