Section 2 Annual Surveys – Hull, machinery and optional requirements
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 2 Annual Surveys – Hull, machinery and optional requirements

Section 2 Annual Surveys – Hull, machinery and optional requirements

2.1 General

2.1.1 Annual Surveys are to be held concurrently with any relevant maintenance period and in consultation with the Owner with regard to operational needs.

2.1.2 At Annual Surveys, the Surveyor is to examine the hull, so far as necessary and practicable, in order to be satisfied as to its general condition.

2.1.3 Particular attention is to be paid to critical areas.

2.1.4 For ships assigned the notation ‘laid-up’, in lieu of the normal Annual Survey requirements a general examination of the hull and machinery is to be carried out.

2.2 Hull

2.2.1 The Surveyor is to be satisfied regarding:

  1. The efficient condition of doors, hatchways and lifts on upper and superstructure decks, weather deck plating and air pipes, exposed casings, deck-houses, superstructure bulkheads, side, bow and stern doors, windows, side scuttles and deadlights, guard rails, life-lines, ladders, pressure relief plates and other openings, together with all closing appliances and flame screens. In addition, the Surveyor is to externally examine all air pipe heads installed on exposed decks.

  2. The efficient operating condition of mechanically operated hatch covers including stowage, fit, securing, locking, sealing and operational testing of hydraulic power components.

  3. The efficient condition of scuppers and sanitary discharges (so far as is practicable); valves on discharge lines (so far as is practicable) and their controls; guard rails and bulwarks.

2.2.2 Any hatch covers and coamings together with any doors, lifts or ramps which form part of the watertight integrity of the hull are to be examined to ensure that no alterations have been made to the approved arrangements.

  1. Mechanically operated lifts, hatch covers or doors are to be tested for tightness to confirm the satisfactory condition of securing and sealing arrangements; drainage channels; operating mechanisms. Associated drainage channels and operating mechanisms, such as tracks and wheels, are also to be examined to confirm they are in satisfactory condition.

  2. Hatch covers of the portable type are to be examined to confirm that the covers and closing appliances are in a satisfactory condition.

This examination will include hatches and doors in superstructures.

2.2.3 The anchoring and mooring equipment is to be examined so far as is practicable.

2.2.4 The watertight doors/closures in watertight bulkheads and any indicators or alarms are to be examined and operationally tested locally and, where applicable remotely. Other watertight bulkhead penetrations are to be examined so far as is practicable.

2.2.5 The Surveyor is to be satisfied regarding the draught marks on the ship’s side.

2.2.6 The Surveyor is to be satisfied that no alterations have been made to the ship which affect stability and strength.

2.2.7 The Surveyor is to be satisfied that any alterations to approved scantlings and arrangements to the structure of magazine spaces have been approved by LR, see Vol 1, Pt 1, Ch 2, 4.4 Damages, repairs and alterations 4.4.8.

2.2.8 The surveyor is to check the C11(N) on board the vessel and verify with the actual arrangement on board.

2.2.9 For steel ships, the requirements of Vol 1, Pt 1, Ch 3, 3.2 Hull 3.2.2 and Vol 1, Pt 1, Ch 3, 5.4 Examination and testing – Additional items for steel ships 5.4.2 regarding the survey of water ballast spaces, compensated fuel tanks, integral sanitary tanks and bilges are also to be complied with as applicable.

2.2.10 The Surveyor is to carry out an examination and thickness measurement of structure identified at the previous Special Survey or Intermediate Survey as having substantial corrosion.

2.2.11 The first Annual Survey should include a review of the year’s service, taking into account feedback from the Owner. Special attention needs to be given to areas of the structure where defects have become apparent. It is important that this information is fed back to the Design Authority and building yards for follow-on ships.

2.3 Machinery

2.3.1 The Surveyor is to generally examine the machinery and boiler spaces with particular attention being given to the propulsion system, auxiliary machinery and to the existence of any fire and explosion hazards. Emergency escape routes are to be checked to ensure that they are adequately identified and free of obstruction.

2.3.2 The means of communication between the navigating bridge and the machinery control positions, as well as the bridge and the alternative steering position, if fitted, are to be tested.

2.3.3 The Surveyor is to examine and test in operation all main and auxiliary steering arrangements including their associated equipment and control systems.

2.3.4 The bilge pumping and dewatering systems and bilge wells, including operation of extended spindles and level alarms, where fitted, are to be examined so far as is practicable. Satisfactory operation of the bilge pumps and dewatering eductors is to be proven, including access to all bilge areas.

2.3.5 Piping systems containing fuel oil, lubricating oil or other flammable liquids are to be generally examined and operated as far as practicable, with particular attention being paid to tightness, fire precaution arrangements, flexible hoses and sounding devices.

2.3.6 The Surveyor is to be satisfied regarding the condition of non-metallic joints in piping systems which penetrate the hull, where both the penetration and the non-metallic joint are below the deepest waterline.

2.3.7 The Surveyor is to be satisfied regarding the following items associated with machinery installations.

  1. Locking arrangements for locked valves and inspection covers.

  2. Integrity of guards for rotating machinery.

  3. Lighting arrangements, particularly at control and instrumentation panels.

  4. Operation of automatic start-up of pumps and systems for essential systems where they are required by the Rules.

  5. Condition of machinery securing and mounting arrangements.

  6. The condition of bulkhead glands.

2.3.8 The boilers, other pressure vessels and their accessories and associated fittings including safety devices, foundations, controls, relieving gear, high pressure and waste steam piping, insulation and gauges, are to be generally examined. Surveyors should confirm that Periodical Surveys of pressure vessels have been carried out as required by the Rules and that the safety devices have been tested.

2.3.9 Records of boiler treatment and analyses are to be retained on board and audited annually by the LR Surveyor. The water treatment and results of analyses are to be in accordance with the manufacturer’s recommendations.

2.3.10 The main propulsion, essential auxiliary and emergency generators including safety arrangements, controls and foundations are to be generally examined. Surveyors are to confirm the Periodical Surveys of engines have been carried out as required by the Rules and that safety devices have been tested.

2.3.11 The electrical equipment and cabling forming the main and emergency electrical installations are to be generally examined under operating conditions as far as is practicable. Particular checks are to be made on the integrity of electrical enclosure and cleanliness of switchboards and bus bars. The satisfactory operation of the main and emergency sources of power and electrical services essential for safety in an emergency is to be verified; where the sources of power are automatically controlled they should be tested in the automatic mode. Bonding straps for the control of static electricity and earthing arrangements are to be examined where fitted.

2.3.12 The electrical installation including gas detection systems, in areas deemed dangerous, such as magazine spaces and spaces where low flash point oils are stored and handled and compartments adjacent to such spaces, is to be examined in order to verify that it is of the correct type, is in good condition and has been properly maintained.

2.3.13 Gas detection systems fitted to spaces potentially containing flammable, poisonous, toxic/corrosive, asphyxiant or irritant gases, are to be examined and tested, including their associated alarms and emergency shutdowns. It is to be confirmed that suitable indication of the nature of the potential hazards is provided at the entrance(s) to the spaces and, where applicable, on equipment. Portable gas detection equipment is to be examined and tested including sampling points. For both fixed systems and portable equipment, means of calibration are to be examined and calibration records are to be reviewed. Where arrangements other than a fixed gas detection system are in place for such spaces, these are to be examined.

2.3.14 Where Lithium-Ion battery system installations with a total system capacity exceeding 20 kWh are used as a power source for Mobility or Ship Type systems, testing of the following is to be conducted annually so far as is practicable:

  • manual and automatic safety functions; and
  • monitoring and control functions.
2.3.15 The safety aspects of spaces or compartments containing Lithium-Ion batteries used as a power source for Mobility or Ship Type systems are to be examined as applicable to the installation. This should include examinations of the following, as relevant:
  1. structural fire protection;
  2. fixed fire detection;
  3. fixed fire-fighting system(s);
  4. ventilation and associated dampers;
  5. off-gas detection, exhaust and/or extraction arrangement;
  6. integrity of battery crates, trays, boxes, shelves and other structural parts;
  7. battery cooling arrangement;
  8. electrical power cabling, switchgear and converters; and
  9. EEBD (emergency escape breathing devices) and means of escape.

2.3.16 For Mobility, ship type and emergency machinery control engineering systems, a general examination of the equipment and arrangements is to be carried out. Records of modifications are to be made available for review by the attending Surveyor. Satisfactory operation of the safety devices and control systems is to be verified. For ships having UMS or CCS notation, a general examination of the control engineering equipment required for these notations is also to be carried out.

2.3.17 For Mobility, ship type and emergency machinery control engineering systems implemented using programmable electronic systems and software, the impact of changes upon system functionality and the context of use, when carried out are to be assessed by the System Design Authority as defined in Vol 2, Pt 1, Ch 3, 21.2 Definitions 21.2.3. The party undertaking through-life management of the software is to document the configuration management activities undertaken in the registries required by Vol 2, Pt 9, Ch 8, 5.4 Programmable electronic systems – Additional requirements for the production of software 5.4.2. The registries are to be made available to the Surveyor for audit purposes.

2.3.18 Where remote access features or facilities for enabling temporary connections with external devices are included for the programmable electronic system(s), the Owner is to periodically review the provisions made within the associated hardware and software to ensure that new vulnerabilities and dependencies impacting safety have not occurred or have been adequately addressed to mitigate the risk related to their possible exploitation. The Surveyor is to confirm that this periodic review has been carried out by review of records, including review of test records, as applicable, and the registry of programmable electronic systems, logical (virtual) servers, desktops and network communication devices.

2.3.19 For ships fitted with an electronically controlled engine for main propulsion, essential auxiliary or emergency power purposes, the following is to be carried out to the satisfaction of the Surveyor:

  1. Verification of evidence of satisfactory operation of the engine and, where possible, this is to include a running test under load.

  2. Verification of satisfactory operation of the safety devices and control, alarm and monitoring systems.

  3. Verification that any changes to the software or control, alarm, monitoring and safety systems that affect the operation of the engine have been assessed by LR and are under configuration management control.

2.3.20 Dead ship starting arrangements for bringing machinery into operation without external aid are to be tested to the Surveyor’s satisfaction.

2.3.21 The Surveyor is to be satisfied that any alterations to approved equipment, piping, cabling and electrical systems in magazine spaces have been approved by LR, see Vol 1, Pt 1, Ch 2, 4.4 Damages, repairs and alterations 4.4.8.

2.3.22 For ships fitted with machinery shock arrangements in accordance with Vol 2, Pt 1, Ch 3, 4.11 Machinery shock arrangements, the following is to be carried out to the satisfaction of the Surveyor:

  1. A general examination of shock mounts including their condition, date of manufacture and deflection under static load. Particular attention is to be given to mounts which have been installed since the previous survey and to those on which the mounted machinery has been replaced.

  2. Verification that clearances for shock mount deflection and flexible connections around shock capable equipment have been maintained.

2.4 Other notations

2.4.1 Where the following optional Class Notations have been assigned, the requirements below are to be included with the Annual Survey.

2.4.2  Fire Protection (FIRE). The arrangements for fire protection, fire detection and extinction are to be examined and are to include the following items:

  1. Verification, so far as is reasonably practicable, that no significant changes have been made to the arrangements for structural fire protection.

  2. Verification of the operation of manual and/or automatic doors where fitted.

  3. Verification that fire control plans are properly posted.

  4. Examination, so far as is possible, and testing as feasible, of the fire and/or smoke detection and alarm system(s).

  5. Examination of the water fire-fighting system, and confirmation that each pump connected to the water fire-fighting system, including any emergency fire pump can be operated separately so that the required jets of water can be produced simultaneously from different hydrants.

  6. Verification that fire-hoses, nozzles, applicators and spanners are in good working condition and situated at their respective locations.

  7. Examination of fixed fire-fighting systems, controls, piping, instructions and marking, checking for evidence of proper maintenance and servicing, including date of last systems tests, including operational alarm tests.

  8. Verification that all portable and semi-portable fire-extinguishers are in their stowed positions, checking for evidence of proper maintenance and servicing, conducting random checks for evidence of discharged containers.

  9. Verification, so far as is reasonably practicable, that the remote control for stopping fans in accommodation spaces and the means of cutting off power to the galley are in good working order.

  10. Examination of the closing arrangements of ventilators, hatches and doorways where applicable.

  11. Verification that the fireman’s outfits are complete and in good condition.

2.4.3  Escape and Emergency Access (ESC). The arrangements for escape of personnel and emergency access are to be examined and are to include the following:

  1. Verification, so far as is reasonably practical, that no significant changes have been made to the arrangements for escape and emergency access.

  2. Verification that all normal and emergency escape and emergency access routes are free of obstruction.

2.4.4  Life Saving and Evacuation Arrangements (LSAE). The arrangements for life saving and evacuation are to be examined and are to include the following:

  1. Verification, so far as is reasonably practicable, that no significant changes have been made to the arrangements for life saving and evacuation.

  2. Verification of Life-jackets, Life-buoys, Immersion Suits, Thermal Protection Aids, etc. and their attachments for effectiveness and condition.

  3. That rescue boats and survival craft have been serviced by an approved servicing company, and ascertain that they are identified and certificated with a valid date.

  4. That the rescue boat and launching/recovery arrangements are in full working order.

  5. The the survival craft launch arrangements, are in a good working order.

2.4.5  Safety of Navigation and Communication (SNC). The arrangements for navigation and communication equipment are to be examined and are to include the following:

  1. Verification, so far as is reasonably practicable that no significant changes have been made to the navigation and communication equipment.

  2. That the ship is in possession of up-to-date Nautical Publications, Emergency Instructions, International Code of Signals, Operating Instructions for Life-saving Appliances and their maintenance.

  3. Shipboard navigational equipment.

  4. Signalling equipment (lights and sounds).

  5. Navigation lights.

  6. Rockets and signals (pyrotechnics).

  7. Black shapes.

2.4.6  Pollution Prevention (POL) The arrangements for pollution prevention are to be examined and are to include the following:

  1. Oil. Verification of piping system arrangements between tanks, bilge and ballast systems, which are used to transfer oil/oily water and ballast water to ensure that no changes have been made to the systems since they were installed. Checking oil filters, oily water separators and sludge/oily water residue containment.

  2. Sewage. Verification of the sewage treatment arrangements, containment and the piping systems.

  3. Garbage. Verification of the garbage disposal arrangements and the installation of the equipment to ensure that no unauthorised changes have been made.

  4. Air. Verification that the engine exhaust emissions are still within the NOx Technical Code. Verification of the incinerator installation. Re-testing the fuel oils to ensure that the sulphur content is still below 4,5 per cent.

2.4.7 Clasifications Manoeuvring Assessment (LMA or LNMA). The arrangements for the provision of manoeuvring information are to be examined and are to include confirmation that the following documents are on board and that any changes that can affect the manoeuvring performance of the vessel have been identified and manoeuvring information updated:

  1. Bridge poster/card;
  2. Manoeuvring Booklet/Operator Guidance;
  3. Manoeuvring Information Card.

2.4.8 Crew and Embarked Personnel Accommodation Comfort (CEPAC1 or CEPAC2). The arrangements for managing observations/complaints for excessive noise and vibration are to be reviewed annually and any areas of concern identified for further monitoring. At each Renewal Survey measurements of noise and vibration are to be repeated at a minimum of 10 per cent of the original measurement locations and continued compliance confirmed. See Vol 3, Pt 2, Ch 7, 7 Survey requirements.

2.4.9 Boat Operations at Sea (BOATS). The onboard arrangements for the launch, recovery and carriage of small boats, and for interfacing of the vessel with waterborne craft alongside or persons in the water are to be examined and are to include the following:

  1. Verification that no changes have been made to the provision of boats or permanently embarked watercraft designated for use onboard.
  2. Survey of the boat stations, embarkation stations, recovery stations and associated shipboard arrangements to confirm satisfactory working condition of the fittings, control arrangements, communications, lighting and equipment.
  3. Confirmation that the survey and test status of the launch and recovery appliances is up to date and verification that loose gear, lifting and securing equipment is appropriately certified and in effective condition.
  4. Verification of the protective and safety equipment for effectiveness and condition and a review of the log of inspections, maintenance and testing.
  5. Verification of the validity of certification for boats or watercraft permanently fitted onboard.

2.4.10 The first Annual Survey shall include confirmation by the Owner that operational trials for the launch and recovery of boats and watercraft in the defined operational conditions have now been completed and that any findings have been fed back into the Operator Guidance and to the Design Authority and building yards for future vessels.

2.4.11 The first Annual Survey shall include confirmation by the Owner that the required Operator Guidance has been found suitable for the defined operational use.


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