Section 6 Classification of machinery with [✠]LMC or MCH notation
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 1 Ship Structures - Part 1 Regulations - Chapter 2 Classification Regulations - Section 6 Classification of machinery with [✠]LMC or MCH notation

Section 6 Classification of machinery with [✠]LMC or MCH notation

Parent topic: Chapter 2 Classification Regulations

6.1 General

6.1.1 After delivery of machinery and equipment with the manufacturer’s certificate to the shipyard, Survey at the Shipyard and Periodical Surveys are to be in accordance with the requirements for ships built or accepted into class with the LMC notation.

6.2 Appraisal and records

6.2.1 To facilitate survey and compilation of classification records, the same plans and information that are required for a ship being accepted into class with the LMC notation, are required to be submitted for the alternative notation LMC or MCH for appraisal and information. Plans are not required where machinery and equipment have previously been approved by LR. In these cases it is only necessary to submit details of the machinery and equipment together with details of the previous approval.

6.3 Survey and inspection

6.3.1 The manufacturer’s certificate for acceptance of machinery and equipment for assignment of the LMC or MCH notation is to be in the English language and include the following information:

  1. Design and manufacturing standard(s) used.

  2. Materials used for construction of key components and their sources.

  3. Details of the quality control system applied during design, manufacture and testing, and of any software maintenance.

  4. Details of any type approval or type testing.

  5. Details of installation and testing recommendations for the machinery or equipment.

The manufacturer is to have a recognised quality management system that is acceptable to LR.

6.3.2 The installation and testing of machinery and equipment at the build or fitting-out yard that has been supplied with a manufacturer’s certificate is to be in accordance with the requirements applicable to a ship having the LMC notation.

6.3.3 Acceptance of manufacturer’s certificates for items of machinery for propulsion (including propulsion gearing with single input/output arrangements) and for electrical power generation and for other auxiliary machinery for essential services where the LMC notation is to be assigned, is subject to the following conditions:

  1. The vessel is an NS3 ship, an NS(SR) ship, or an NS(SSC) ship of less than 500 gross tonnage or is a ship of 500 gross tonnage or greater and is not required to comply with international conventions applicable to a ship with unrestricted service.

  2. Propulsion power is provided by engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

  3. Electrical power is provided by generators driven by engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

  4. The design and manufacture standards for all machinery and associated systems are the applicable LR Rules.

  5. The machinery and equipment are manufactured under a quality control system which is in accordance with a recognised National or International Standard for such systems that is acceptable to LR.

  6. Propellers, propulsion shafting and multiple input/output gearboxes are not included within the scope of propulsion arrangements for acceptance of a manufacturer’s certificate.

6.3.4 Acceptance of the manufacturer’s certificate for propelling and essential auxiliary machinery, where the MCH notation is to be assigned, is subject to the following conditions:

  1. The ship is an NS3 ship, an NS(SR) ship, or an NS(SSC) ship of less than 500 gross tonnage or is a ship of 500 gross tonnage or greater and is not required to comply with International Conventions applicable to a ship with unrestricted service.

  2. Propulsion power is provided by engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

  3. Electrical power is provided by generators driven by engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

  4. The power of any engine or gas turbine is less than 2,250 kW and the cylinder bore of any diesel engine is not greater than 300 mm.

  5. The design standards for machinery and associated systems are the applicable LR Rules or other marine standards acceptable to LR.

  6. The machinery and equipment is manufactured under a recognised quality control system that is acceptable to LR.

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