Section 16 Classification of ships built under survey to LR Classification Rules and Regulations other than LR Naval Ship Rules and Regulations
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 3 Periodical Survey Regulations - Section 16 Classification of ships built under survey to LR Classification Rules and Regulations other than LR Naval Ship Rules and Regulations

Section 16 Classification of ships built under survey to LR Classification Rules and Regulations other than LR Naval Ship Rules and Regulations

Parent topic: Chapter 3 Periodical Survey Regulations

16.1 General

16.1.1 When Naval ship classification is desired for an existing ship built under the supervision of LR Surveyors to Classification Rules and Regulations other than LR Naval Ship Rules, application should be made in writing.

16.1.2 Periodical Surveys of such ships, when classed to the LR Naval Ship Rules are subsequently to be held as in the case of ships built under survey to the Naval Ship Rules. All features of the extant survey regime for hull and machinery are to be included in the Survey scheme under the Naval Ship Rules.

16.2 Hull and equipment

16.2.1 Plans showing the features of the ship not covered by the other Classification Rules against which the ship is classed are to be submitted. These may include the following items. For these items, documents demonstrating compliance with appropriate Standards recognised by the Naval Authority are to be submitted. In the absence of such documentation, an appraisal may be required to the satisfaction of LR. For vessels which have generated sufficient evidence of satisfactory in-service experience LR may consider this in lieu of compliance documentation or an appraisal. Where an appraisal is undertaken, strength and, where appropriate, stiffness aspects are to be addressed:

  • Masts.
  • Weapon system seats.
  • RAS seats, landing areas.
  • Aircraft landing guides.
  • Towing points.
  • Military loads.
  • Beaching.
  • Material grades.
  • Watertight integrity.
  • Strength of watertight structure.

If plans cannot be obtained or prepared by the Owner, facilities are to be given for LR's Surveyor to obtain the necessary information from the ship.

16.2.2 Suitable documentation should be presented to demonstrate that the following aspects are addressed by the appropriate Naval Authority:

  • Stability.
  • Magazine safety.
  • Lifts, ramps, shell doors.
  • Fire safety.

16.2.3 During the survey, the Surveyors are to satisfy themselves regarding the workmanship and verify the approved scantlings and arrangements of additional features covered by the Rules. For this purpose, and also in order to ascertain the amount of any deterioration of a steel ship, parts of the structure may need to be gauged as necessary.

16.2.4 When the full survey requirements indicated in Vol 1, Pt 1, Ch 3, 7.2 Complete Survey 7.2.4 cannot be completed at one time, LR may consider granting an interim record for a limited period. The conditions regarding the completion of the survey will depend on the merit of each particular case, which should be submitted for consideration.

16.3 Machinery

16.3.1 Plans of systems not covered by the other Classification Rules against which the ship is classed are to be submitted to LR. For these systems, documents demonstrating compliance with appropriate Standards recognised by the Naval Authority are to be submitted. In the absence of such documentation, an appraisal may be required to the satisfaction of LR. For vessels which have generated sufficient evidence of satisfactory in-service experience LR may consider this in lieu of compliance documentation or an appraisal:

  1. Aircraft/helicopter and vehicle fuel storage and distribution systems.

  2. Chilled water systems.

  3. High pressure sea-water systems.

  4. High and low pressure compressed air systems.

  5. Hydraulic power actuating systems.

  6. Made and fresh water systems.

  7. Heating, ventilation and cooling arrangements.

  8. Replenishment at sea arrangements where a RAS notation is requested.

16.3.2 Details additional to those detailed in Vol 1, Pt 1, Ch 3, 16.3 Machinery 16.3.1 are not to be submitted unless the machinery or installation is of a novel or special character affecting Mobility, Ship Type or Ancillary category systems for Machinery Naval Classification.

16.3.3 The whole of the machinery, including essential controls and safety arrangements, is to be tested to an agreed test plan under working conditions to the Surveyor's satisfaction.

16.3.4 Relevant reports on the submitted information and testing are to be prepared by the Surveyors.

Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.