Amendments to MARPOL ANNEX VI that make the "Energy Efficiency Design Index (EEDI)" and the "Ship Efficiency Management Plan (SEEMP)" mandatory were adopted at the 62nd session of the Marine Environment Protection Committee (MEPC 62) held in July 2011, and came into force from 1 January 2013.
Relevant information on the minimum propulsion power requirements applied for the ships to which compliance with an EEDI limit value (required EEDI) is required has already been provided in ClassNK Technical Information No. TEC-0938. Since the guidelines defining this requirement have been revised, the Technical Information is revised as described below. The said ClassNK Technical Information No. TEC-0938 is thus revoked, accordingly.

1. Background
For ships to which the requirements regarding required EEDI specified in Reg. 21 of MARPOL ANNEX VI apply, the installed propulsion power is not to be less than the propulsion power needed to maintain the manoeuvrability of the ship under adverse conditions as defined in the guidelines developed by the IMO, in accordance with Reg. 21.5 of ANNEX VI.
At MEPC 64 held in October 2012 and MSC 91 subsequently held in November 2012, "Interim Guidelines for Determining Minimum Propulsion Power to Maintain the Manoeuvrability of Ships in Adverse Conditions" were developed and issued as MSC-MEPC.2/Circ.11. At MEPC 64, it was agreed that the interim minimum power guidelines should be further examined and fine-tuned as required at MEPC 65 or later.
After considerable deliberations at MEPC 65 held in May 2013, the revised version of the interim minimum power guidelines (hereinafter referred to as "2013 interim minimum power guidelines") were adopted as Resolution MEPC.232(65).

2. Application
The 2013 interim minimum power guidelines are applicable only to bulk carriers, tankers, and combination carriers to which compliance with an EEDI limit value (required EEDI) is required by Reg. 21 of MARPOL ANNEX VI*.

* Applies to bulk carriers, tankers, or combination carriers of 20,000DWT or above for which either the building contract is placed on or after 1 January 2013, or in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 1 July 2013, or the delivery of which is on or after 1 July 2015.

(To be continued)